{"title":"Laser collimators for telescopes","description":"\u003cp\u003eThe laser collimator for telescopes is a practical and accurate tool for aligning the mirrors of your optical instrument. Designed primarily for reflector telescopes, it facilitates collimation, i.e., the perfect alignment of the primary and secondary mirrors, in order to obtain sharp, high-contrast images.\u003c\/p\u003e\n\u003cp\u003eThanks to the light beam it emits, the laser collimator allows you to instantly check the alignment of the mirrors. It guides the user in making adjustments so that the light beam returns exactly to its source. This method is faster and more accurate than conventional techniques based solely on observing stars or optical targets.\u003c\/p\u003e\n\u003cp\u003eUsing a laser collimator for telescopes improves the quality of your visual observations and astrophotography sessions. Whether you are an advanced amateur or an experienced astrophotographer, it guarantees a sharper image, reduces aberrations, and simplifies the regular maintenance of your instrument. \u003c\/p\u003e\n\u003cp\u003eDiscover our selection of laser collimators for telescopes to enjoy precise alignment and get the most out of your telescope. You can also complement your equipment with other \u003ca href=\"https:\/\/istronomyplus.com\/collections\/collimation-tools\" target=\"_self\" title=\"\"\u003ecollimation tools for telescopes\u003c\/a\u003e such as \u003ca href=\"https:\/\/istronomyplus.com\/collections\/chesire\" target=\"_self\" title=\"\"\u003eCheshire collimators\u003c\/a\u003e, \u003ca href=\"https:\/\/istronomyplus.com\/collections\/electronic-collimator\" target=\"_self\" title=\"\"\u003eelectronic collimators\u003c\/a\u003e, or \u003ca href=\"https:\/\/istronomyplus.com\/collections\/knobs\" target=\"_self\" title=\"\"\u003eadjustment knobs\u003c\/a\u003e for even more precise alignment.\u003c\/p\u003e","products":[{"product_id":"hotech-1-25-sca-dot-laser-collimator-sca-1-25d","title":"HoTech 1.25\" SCA Dot Laser Collimator (SCA-1.25D)","description":"\u003ch1\u003eHoTech 1.25\" SCA Dot Laser Collimator\u003c\/h1\u003e\n\u003cp\u003eThe HoTech 1.25\" SCA Dot Laser Collimator separates itself from all other laser collimators with its innovative self-centering adapter technology (SCA). This mechanism allows precise and \u003cb\u003eREPEATABLE \u003c\/b\u003einstallation in all brands of 1.25\" and 2\" telescope focusers thus provides accurate collimation. All laser collimators in the current market have one fundamental problem, slop in the adapting mechanism between the laser collimator and the telescope focuser.This problem is clearly recognized and often discussed among astronomers but so far there has been no definite solution in the market. No matter how tightly the tolerances machined on the laser collimator or the focuser, a small gap is required to allow installation of the laser collimator. Once the laser collimator is inserted, the required gap becomes a problem. A laser collimator is secured with one or more thumbscrews or unified compression ring. Both methods introduce very critical issues, namely inconsistant adaption from \u003cb\u003e\u003ci\u003eoff-axis\u003c\/i\u003e\u003c\/b\u003e (axial) and \u003cb\u003e\u003ci\u003enone parallel-axis\u003c\/i\u003e\u003c\/b\u003e installment that instantly destroys the precision of your collimation instrument along the entire optical axis. \u003cb\u003eOur Self-Centering Adapter cleverly eliminates the focuser slop by linearly compressing the built-in rubber rings.\u003c\/b\u003e By doing this, the diameter of the rings expands to compensate the gap.Because all rings evenly expand radially in diameter from the compression, this automatically centers the laser collimator in the focuser draw tube. And most importantly, our SCA laser collimator can be tightly installed in the focuser for a repeatable installation to provide an accurate collimation. In summary, \u003cb\u003eour SCA adapter serves three critical functions\u003c\/b\u003e. First, its expansion rings accommodate almost all focuser's manufacturing tolerances. Second, it automatically centers the adapting laser in the focuser. Third, it provides at least two evenly distributed circular contacts on the focuser's inner tube surface preventing the adapting laser from pivoting and parallel to the focuser.Once the slop factor is taken away, you can quickly collimate your telescope in confidence to achieve perfect collimation every time.\u003c\/p\u003e\n\u003cp\u003eSCA Eliminates Drawtube Slop\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAll drawtube have manufacturing tolerances.And it requires larger diameter to accept various eyepieces and adapters.When a standard collimator is inserted, the gap between the drawtube and the inserting device became a slop problem.The rubber rings in the SCA expand radially according to users own adjustment to fill the gaps.This makes your collimator seats firmly in your drawtube becoming part of your telescope for a secure and \u003cb\u003erepeatable\u003c\/b\u003e installation.\u003c\/p\u003e\n\u003ch4\u003eSCA Keeps Laser Perfectly Parallel to the Focuser\u003c\/h4\u003e\n\u003cp\u003eThe patented multiple expanding o-rings design provides solid 360 degress even grip to the inner focuser surface keeping the adapting laser perfectly parallel to the focuser tube elimating any possible tip or tilt error from the conventional thumbscrew locking mechanism.\u003c\/p\u003e\n\u003ch4\u003eSCA Eliminates unstable locking from thumbscrew or unified compression ring\u003c\/h4\u003e\n\u003cp\u003eThe optical axis is shifted when the inserting device is locked in by thumbscrew.In some cases, some poorly made unified compression ring can cause unstable tilt when locking in the drawtube due to loose tolerances between the compression ring, inner groove, and the uneven tip of the locking thumbscrew in a drawtube.The SCA adapts the collimator itself without using the thumbscrew or the unified compression ring.\u003c\/p\u003e\n\u003ch4\u003eSCA Accepts the Imperfection of a Drawtube\u003c\/h4\u003e\n\u003cp\u003eSmall imperfection inside the drawtube like dents, scratches, and uneven burrs, the rubber rings compensates the errors and faithfully centers the collimator in the tube.In addition, even if the drawtube is slightly deformed in diameter, egg-shaped, the rubber rings in the SCA will compensate the differences and faithfully centers the collimator. A metal collet design will not be able to transform itself to the deformed shape to compensate the imperfection of a drawtube for a sturdy adaption.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMore SCA Laser Collimator Features:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003ch4\u003eLaser Engraved 45º Targeting Faceplate\u003c\/h4\u003e\n\u003cp\u003eThe targeting faceplate displays the returning laser spot with a clear visual reference during adjustment. That allows you to align your primary mirror from the rear of the telescope and eliminates traveling to the front of your scope repeatedly during collimation. Collimating without the targeting faceplate, you will not be able to adjust the primary mirror in real time referencing the laser dot.In other words, you often get lost on which adjustment screws you used due to traveling back and forth for referencing the direction you have adjusted.This results in considerable time to complete the collimation and defeats the purpose of quick and easy laser collimation. HoTech understands the importance of this, so the faceplate is a standard feature in our laser collimator.All astronomers deserve to have it without paying any extra! HoTech understands the importance of this, so the faceplate is a standard feature in our laser collimator.All astronomers deserve to have it without paying any extra! In addition, our faceplate viewer’s pattern is laser engraved to ensure a long lasting sharp targeting grid for best visual effects. Unlike other collimators, the target is not a sticker that will peel, or paint that can rub or chip off. We understand that you are paying for a precision instrument that is supposed to be well made.\u003c\/p\u003e\n\u003ch4\u003eFinest Projecting Laser Dot\u003c\/h4\u003e\n\u003cp\u003eKeeping the laser dot to the finest point is the key to precision collimation. But when you look closely at the laser dot from brand to brand, most laser dots appear large, not really a fine point as you imagined.This means there is guess work involved when you try to center the dot; not just centering the laser dot to the center of the faceplate, but also centering the center of the dot itself.This does not make any sense when you are trying to take the advantage of the collimated laser beam's characteristic \"which has a low beam divergence, so that the beam radius does not undergo significant changes within moderate propagation distances.\" In other words, the laser beam size within the collimation distance (laser collimator to the primary mirror and back to the faceplate) should remain a constant fine point. As you know, most laser collimator brands are not really laser manufacturers.They install an off-the-shelf laser module or pointer and align the laser in a tube without REALLY considering the user’s application, namely the operating distance for a laser beam size.HoTech has been designing and building laser modules and systems for over 10 years for various professional industries.We know exactly how a laser should work.We limit our laser beam to the finest size in the correct operating distance for optimal effect.Our understanding and experiences with the laser design permit you to have an effective and precision collimation.\u003c\/p\u003e\n\u003ch4\u003eProprietary Crosshair Laser Collimator Available\u003c\/h4\u003e\n\u003cp\u003eWith our proprietary laser crosshair, user can zero-in the laser with ease during the final collimation on the secondary and the primary mirror. The crosshair model still exibits a precision laser center dot, but with a touch of four extended laser lines from the center dot. The extension lines (crosshair) of the laser dot is the most intuitive way to guide the laser pointing for an accurate adjustment. During the secondary mirror collimation, a single dot laser projecting on the approximate center of the pre-loaded donut is difficult to identify if the laser dot is exactly on the center.The crosshair laser can easily help user to adjust the secondary mirror to point the laser on the exact center with the help of the crosshair line. During the final primary mirror collimation, the returning laser dot often hides into the laser exiting hole preventing user to identify if the returning laser is at exact center of the hole. Again, the crosshair will visually guide the user to center the laser dot with ease even when the center laser dot disappears into the exiting hole.It is a very effective and essential feature to the SCA Laser Collimator in obtaining at even higher degree of accuracy with ease.\u003c\/p\u003e\n\u003ch4\u003eHigh Accuracy Laser Alignment\u003c\/h4\u003e\n\u003cp\u003eOur laser collimator is well centered and aligned which are critical factors for an accurate collimation.But you will be surprised that many laser collimators in the market fail in this regard.The reason is in the design and understanding of the product itself. We considered all aspect of parameters in our design.Parameters like the alignment mechanism, mechanical and optical structure of the laser itself, and more are taken as part of our design.For instance, some laser collimators actually install an off-the-shelf laser pointer in the casing.It is very cost effective (for seller), but it inherits numerous problems.In many cases, the laser pointer might not install perfectly centered in the casing due to pointer size variations and the added alignment mechanism.So the laser itself is not positioned on the true alignment point and optical axis. As the result, the laser can never be center-aligned in the enclosure.It is possible to align the laser beam parallel to the optical path but always with an offset along the optical axis.This means the laser beam is off no matter how you center adapt the laser collimator to the focuser.\u003c\/p\u003e\n\u003ch4\u003eLight Weight Design and All Aluminum Body Machined with High Precision CNC\u003c\/h4\u003e\n\u003cp\u003eMany laser collimator manufacturers give users the wrong impression, “big and heavy means rugged and stable.” Instead, HoTech engineers successfully cut the unnecessary weight on the laser collimator because we understand that additional weight on a telescope (especially open structure Newtonians) will create imbalance and structure sagging.In addition, the heavier the device is, the more inertia it will have during an impact from an accidental drop.In such an accident, the inertia force can cause more damage to the internal alignment mechanism because there is more energy required to dissipate from the impact.Therefore, the lightweight design on our laser collimator makes you gain reliable precision collimation.And of course our laser collimator uses aero-space grade lightweight aluminum material and CNC machined with the tightest tolerances, then sand blasted and anodized to protect from harsh environment. Nothing has been sacrificed while you get a long lasting state-of-the-art collimation instrument.\u003c\/p\u003e\n\u003ch4\u003eLong Lasting Battery Life\u003c\/h4\u003e\n\u003cp\u003eBy using the CR123, 3V battery as our laser power source, our laser collimator has over 65 hours of continuous use battery life time. The included CR123, 3V lithium battery operates well under a typical cold night and it has a 10 years shelf life. This is a great advantage that you don't have to worry about changing the tiny hard to find cell batteries frequently in the dark like other collimators.\u003c\/p\u003e\n\u003ch4\u003eDiffraction Grating Pattern Lens on our SCA Laser Collimator\u003c\/h4\u003e\n\u003cp\u003eSince our SCA Laser Collimator is already accurate with the SCA technology, fine laser dot, and the built-in 45 degrees faceplate, there is no need to use the DFG pattern to align the primary mirror of a Newtonian telescope.The purpose of using DFG pattern is to gross alignment the primary mirror.The user aligns the primary mirror by referencing the shadow of the secondary in the projected DFG pattern on a wall, and user counts the DFG dots around the shadow to center in the shadow.This method cannot achieve accurate alignment because the gap between each dot can make a big alignment difference.At the final alignment stage, the user must bring the laser dot back to the laser exit (the center of the 45 degrees faceplate).Our built-in 45 degrees faceplate allows you to align your primary mirror from the rear of the telescope eliminating traveling to the front of your scope repeatedly during collimation like other collimators.Therefore, there is no need to use DFG lens in conjunction with our SCA Laser Collimator.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specification\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eModel:1.25″ SCA Crosshair Laser Collimator\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFocuser Size: 1.25″\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLaser Wavelength: 650nm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLaser Output Power: Class II, \u0026lt; 1mW\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eOperating Voltage: 3V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBattery: One 3V Lithium Battery (included), 10 yrs shelf life, 40+ Operating Hours\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWeight: 3.4 oz. w\/ battery\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDimension: 1.2″\/30mm dia. x 5″\/127mm (L)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eConstruction: All Areo-Space Grade Anodize Aluminum Case\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eRecommend Use: Ideal for Newtonian Style Telescope\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e1.25″ Laser Collimator\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBattery\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eManual\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eHotech 1-Year Warranty\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Hotech-SCA-Laser-Collimator-Instructions.pdf?v=1668109379\" target=\"_blank\"\u003eHoTech SCA Laser Collimator Instructions\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Hotech-SCA-Laser-Collimator-Manual-for-SCT.pdf?v=1668109410\" target=\"_blank\"\u003eHoTech SCA Laser Collimator Manual for SCT\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Hotech-Star-Collimation-Instructions.pdf?v=1668109541\" target=\"_blank\"\u003eHoTech Star Collimation Instructions\u003c\/a\u003e\u003c\/p\u003e","brand":"Hotech","offers":[{"title":"Default Title","offer_id":43133240180965,"sku":"HOT-SCA-1.25D","price":156.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/hotech-1-25-sca-dot-laser-collimator-sca-1-25d-astronomy-plus_652314bb-fe2f-4ccc-8f30-f2e980d05baf.png?v=1690484336"},{"product_id":"hotech-1-25-sca-crosshair-laser-collimator-sca-1-25c","title":"HoTech 1.25\" SCA Crosshair Laser Collimator (SCA-1.25C)","description":"\u003ch1\u003eHoTech 1.25\" SCA Crosshair Laser Collimator\u003c\/h1\u003e\n\u003cp\u003eThe HoTech 1.25″ SCA Crosshair Laser Collimator separates itself from all other laser collimators with its innovative self-centering adapter technology (SCA). This mechanism allows precise and\u003cspan\u003e \u003c\/span\u003e\u003cb\u003eREPEATABLE\u003cspan\u003e \u003c\/span\u003e\u003c\/b\u003einstallation in all brands of 1.25″ and 2″ telescope focusers thus provides accurate collimation. All laser collimators in the current market have one fundamental problem, slop in the adapting mechanism between the laser collimator and the telescope focuser.This problem is clearly recognized and often discussed among astronomers but so far there has been no definite solution in the market.\u003c\/p\u003e\n\u003cp\u003eNo matter how tightly the tolerances machined on the laser collimator or the focuser, a small gap is required to allow installation of the laser collimator. Once the laser collimator is inserted, the required gap becomes a problem. A laser collimator is secured with one or more thumbscrews or unified compression ring. Both methods introduce very critical issues, namely inconsistant adaption from\u003cspan\u003e \u003c\/span\u003e\u003cb\u003e\u003ci\u003eoff-axis\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003e(axial) and\u003cspan\u003e \u003c\/span\u003e\u003cb\u003e\u003ci\u003enone parallel-axis\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003einstallment that instantly destroys the precision of your collimation instrument along the entire optical axis.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOur Self-Centering Adapter cleverly eliminates the focuser slop by linearly compressing the built-in rubber rings.\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eBy doing this, the diameter of the rings expands to compensate the gap.Because all rings evenly expand radially in diameter from the compression, this automatically centers the laser collimator in the focuser draw tube. And most importantly, our SCA laser collimator can be tightly installed in the focuser for a repeatable installation to provide an accurate collimation.\u003c\/p\u003e\n\u003cp\u003eIn summary,\u003cspan\u003e \u003c\/span\u003e\u003cb\u003eour SCA adapter serves three critical functions\u003c\/b\u003e. First, its expansion rings accommodate almost all focuser’s manufacturing tolerances. Second, it automatically centers the adapting laser in the focuser. Third, it provides at least two evenly distributed circular contacts on the focuser’s inner tube surface preventing the adapting laser from pivoting and parallel to the focuser.Once the slop factor is taken away, you can quickly collimate your telescope in confidence to achieve perfect collimation every time.\u003c\/p\u003e\n\u003cp\u003eProblem Solved with SCA Technology\u003cb\u003e\u003ci\u003e\u003cbr\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch4\u003eSCA Eliminates Drawtube Slop\u003c\/h4\u003e\n\u003cp\u003eAll drawtube have manufacturing tolerances.And it requires larger diameter to accept various eyepieces and adapters.When a standard collimator is inserted, the gap between the drawtube and the inserting device became a slop problem.The rubber rings in the SCA expand radially according to users own adjustment to fill the gaps.This makes your collimator seats firmly in your drawtube becoming part of your telescope for a secure and\u003cspan\u003e \u003c\/span\u003e\u003cb\u003erepeatable\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003einstallation.\u003c\/p\u003e\n\u003ch4\u003eSCA Keeps Laser Perfectly Parallel to the Focuser\u003c\/h4\u003e\n\u003cp\u003eThe patented multiple expanding o-rings design provides solid 360 degress even grip to the inner focuser surface keeping the adapting laser perfectly parallel to the focuser tube elimating any possible tip or tilt error from the conventional thumbscrew locking mechanism.\u003c\/p\u003e\n\u003ch4\u003eSCA Eliminates unstable locking from thumbscrew or unified compression ring\u003c\/h4\u003e\n\u003cp\u003eThe optical axis is shifted when the inserting device is locked in by thumbscrew.In some cases, some poorly made unified compression ring can cause unstable tilt when locking in the drawtube due to loose tolerances between the compression ring, inner groove, and the uneven tip of the locking thumbscrew in a drawtube.The SCA adapts the collimator itself without using the thumbscrew or the unified compression ring.\u003c\/p\u003e\n\u003ch4\u003eSCA Accepts the Imperfection of a Drawtube\u003c\/h4\u003e\n\u003cp\u003eSmall imperfection inside the drawtube like dents, scratches, and uneven burrs, the rubber rings compensates the errors and faithfully centers the collimator in the tube.In addition, even if the drawtube is slightly deformed in diameter, egg-shaped, the rubber rings in the SCA will compensate the differences and faithfully centers the collimator. A metal collet design will not be able to transform itself to the deformed shape to compensate the imperfection of a drawtube for a sturdy adaption.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMore SCA Laser Collimator Features:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLaser Engraved 45º Targeting Faceplate\u003c\/strong\u003e\u003cimg style=\"float: none;\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe targeting faceplate displays the returning laser spot with a clear visual reference during adjustment. That allows you to align your primary mirror from the rear of the telescope and eliminates traveling to the front of your scope repeatedly during collimation.\u003c\/p\u003e\n\u003cp\u003eCollimating without the targeting faceplate, you will not be able to adjust the primary mirror in real time referencing the laser dot.In other words, you often get lost on which adjustment screws you used due to traveling back and forth for referencing the direction you have adjusted.This results in considerable time to complete the collimation and defeats the purpose of quick and easy laser collimation.\u003c\/p\u003e\n\u003cp\u003eHoTech understands the importance of this, so the faceplate is a standard feature in our laser collimator.All astronomers deserve to have it without paying any extra!\u003c\/p\u003e\n\u003cp\u003eHoTech understands the importance of this, so the faceplate is a standard feature in our laser collimator.All astronomers deserve to have it without paying any extra!\u003c\/p\u003e\n\u003cp\u003eIn addition, our faceplate viewer’s pattern is laser engraved to ensure a long lasting sharp targeting grid for best visual effects. Unlike other collimators, the target is not a sticker that will peel, or paint that can rub or chip off. We understand that you are paying for a precision instrument that is supposed to be well made.\u003c\/p\u003e\n\u003ch4\u003eFinest Projecting Laser Dot\u003c\/h4\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eKeeping the laser dot to the finest point is the key to precision collimation. But when you look closely at the laser dot from brand to brand, most laser dots appear large, not really a fine point as you imagined.This means there is guess work involved when you try to center the dot; not just centering the laser dot to the center of the faceplate, but also centering the center of the dot itself.This does not make any sense when you are trying to take the advantage of the collimated laser beam’s characteristic “which has a low beam divergence, so that the beam radius does not undergo significant changes within moderate propagation distances.” In other words, the laser beam size within the collimation distance (laser collimator to the primary mirror and back to the faceplate) should remain a constant fine point. As you know, most laser collimator brands are not really laser manufacturers.They install an off-the-shelf laser module or pointer and align the laser in a tube without REALLY considering the user’s application, namely the operating distance for a laser beam size.HoTech has been designing and building laser modules and systems for over 10 years for various professional industries.We know exactly how a laser should work.We limit our laser beam to the finest size in the correct operating distance for optimal effect.Our understanding and experiences with the laser design permit you to have an effective and precision collimation.\u003c\/p\u003e\n\u003ch4\u003eProprietary Crosshair Laser Collimator Available\u003c\/h4\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eWith our proprietary laser crosshair, user can zero-in the laser with ease during the final collimation on the secondary and the primary mirror. The crosshair model still exibits a precision laser center dot, but with a touch of four extended laser lines from the center dot. The extension lines (crosshair) of the laser dot is the most intuitive way to guide the laser pointing for an accurate adjustment.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eDuring the secondary mirror collimation, a single dot laser projecting on the approximate center of the pre-loaded donut is difficult to identify if the laser dot is exactly on the center.The crosshair laser can easily help user to adjust the secondary mirror to point the laser on the exact center with the help of the crosshair line. During the final primary mirror collimation, the returning laser dot often hides into the laser exiting hole preventing user to identify if the returning laser is at exact center of the hole. Again, the crosshair will visually guide the user to center the laser dot with ease even when the center laser dot disappears into the exit\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eing hole.It is a very effective and essential feature to the SCA Laser Collimator in obtaining at even higher degree of accuracy with ease.\u003c\/p\u003e\n\u003ch4\u003eHigh Accuracy Laser Alignment\u003c\/h4\u003e\n\u003cp\u003eOur laser collimator is well centered and aligned which are critical factors for an accurate collimation.But you will be surprised that many laser collimators in the market fail in this regard.The reason is in the design and understanding of the product itself.\u003c\/p\u003e\n\u003cp\u003eWe considered all aspect of parameters in our design.Parameters like the alignment mechanism, mechanical and optical structure of the laser itself, and more are taken as part of our design.For instance, some laser collimators actually install an off-the-shelf laser pointer in the casing.It is very cost effective (for seller), but it inherits numerous problems.In many cases, the laser pointer might not install perfectly centered in the casing due to pointer size variations and the added alignment mechanism.So the laser itself is not positioned on the true alignment point and optical axis. As the result, the laser can never be center-aligned in the enclosure.It is possible to align the laser beam parallel to the optical path but always with an offset along the optical axis.This means the laser beam is off no matter how you center adapt the laser collimator to the focuser.\u003c\/p\u003e\n\u003ch4\u003eLight Weight Design and All Aluminum Body Machined with High Precision CNC\u003c\/h4\u003e\n\u003cp\u003eMany laser collimator manufacturers give users the wrong impression, “big and heavy means rugged and stable.” Instead, HoTech engineers successfully cut the unnecessary weight on the laser collimator because we understand that additional weight on a telescope (especially open structure Newtonians) will create imbalance and structure sagging.In addition, the heavier the device is, the more inertia it will have during an impact from an accidental drop.In such an accident, the inertia force can cause more damage to the internal alignment mechanism because there is more energy required to dissipate from the impact.Therefore, the lightweight design on our laser collimator makes you gain reliable precision collimation.And of course our laser collimator uses aero-space grade lightweight aluminum material and CNC machined with the tightest tolerances, then sand blasted and anodized to protect from harsh environment. Nothing has been sacrificed while you get a long lasting state-of-the-art collimation instrument.\u003c\/p\u003e\n\u003ch4\u003eLong Lasting Battery Life\u003c\/h4\u003e\n\u003cp\u003eBy using the CR123, 3V battery as our laser power source, our laser collimator has over 65 hours of continuous use battery life time. The included CR123, 3V lithium battery operates well under a typical cold night and it has a 10 years shelf life. This is a great advantage that you don’t have to worry about changing the tiny hard to find cell batteries frequently in the dark like other collimators.\u003c\/p\u003e\n\u003ch4\u003eDiffraction Grating Pattern Lens on our SCA Laser Collimator\u003c\/h4\u003e\n\u003cp\u003eSince our SCA Laser Collimator is already accurate with the SCA technology, fine laser dot, and the built-in 45 degrees faceplate, there is no need to use the DFG pattern to align the primary mirror of a Newtonian telescope.The purpose of using DFG pattern is to gross alignment the primary mirror.The user aligns the primary mirror by referencing the shadow of the secondary in the projected DFG pattern on a wall, and user counts the DFG dots around the shadow to center in the shadow.This method cannot achieve accurate alignment because the gap between each dot can make a big alignment difference.At the final alignment stage, the user must bring the laser dot back to the laser exit (the center of the 45 degrees faceplate).Our built-in 45 degrees faceplate allows you to align your primary mirror from the rear of the telescope eliminating traveling to the front of your scope repeatedly during collimation like other collimators.Therefore, there is no need to use DFG lens in conjunction with our SCA Laser Collimator.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Specification\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eModel:1.25″ SCA Crosshair Laser Collimator\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFocuser Size: 1.25″\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLaser Wavelength: 650nm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLaser Output Power: Class II, \u0026lt; 1mW\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eOperating Voltage: 3V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBattery: One 3V Lithium Battery (included), 10 yrs shelf life, 40+ Operating Hours\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWeight: 3.4 oz. w\/ battery\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDimension: 1.2″\/30mm dia. x 5″\/127mm (L)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eConstruction: All Areo-Space Grade Anodize Aluminum Case\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eRecommend Use: Ideal for Newtonian Style Telescope\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e1.25″ Laser Collimator\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBattery\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eManual\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eHotech 1-Year Warranty\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Hotech-SCA-Laser-Collimator-Instructions.pdf?v=1668109379\" target=\"_blank\"\u003eHoTech SCA Laser Collimator Instructions\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Hotech-SCA-Laser-Collimator-Manual-for-SCT.pdf?v=1668109410\" target=\"_blank\"\u003eHoTech SCA Laser Collimator Manual for SCT\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Hotech-Star-Collimation-Instructions.pdf?v=1668109541\" target=\"_blank\"\u003eHoTech Star Collimation Instructions\u003c\/a\u003e\u003c\/p\u003e","brand":"Hotech","offers":[{"title":"Default Title","offer_id":43125731393765,"sku":"HOT-SCA-1.25C","price":192.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/hotech-1-25-sca-crosshair-laser-collimator-sca-1-25c-astronomy-plus_d037a70e-fbb8-42e0-ad52-9d2b6e1f6a84.png?v=1690484336"},{"product_id":"hotech-2-sca-dot-laser-collimator-sca-2d","title":"HoTech 2\" SCA Dot Laser Collimator (SCA-2D)","description":"\u003ch2\u003eHoTech 2\" SCA Dot Laser Collimator\u003c\/h2\u003e\n\u003cp\u003eThe HoTech 2\" SCA Dot Laser Collimator separates itself from all other laser collimators with its innovative self-centering adapter technology (SCA). This mechanism allows precise and \u003cb\u003eREPEATABLE \u003c\/b\u003einstallation in all brands of 1.25\" and 2\" telescope focusers thus provides accurate collimation. All laser collimators in the current market have one fundamental problem, slop in the adapting mechanism between the laser collimator and the telescope focuser.This problem is clearly recognized and often discussed among astronomers but so far there has been no definite solution in the market. No matter how tightly the tolerances machined on the laser collimator or the focuser, a small gap is required to allow installation of the laser collimator. Once the laser collimator is inserted, the required gap becomes a problem. A laser collimator is secured with one or more thumbscrews or unified compression ring. Both methods introduce very critical issues, namely inconsistant adaption from \u003cb\u003e\u003ci\u003eoff-axis\u003c\/i\u003e\u003c\/b\u003e (axial) and \u003cb\u003e\u003ci\u003enone parallel-axis\u003c\/i\u003e\u003c\/b\u003e installment that instantly destroys the precision of your collimation instrument along the entire optical axis. \u003cb\u003eOur Self-Centering Adapter cleverly eliminates the focuser slop by linearly compressing the built-in rubber rings.\u003c\/b\u003e By doing this, the diameter of the rings expands to compensate the gap.Because all rings evenly expand radially in diameter from the compression, this automatically centers the laser collimator in the focuser draw tube. And most importantly, our SCA laser collimator can be tightly installed in the focuser for a repeatable installation to provide an accurate collimation. In summary, \u003cb\u003eour SCA adapter serves three critical functions\u003c\/b\u003e. First, its expansion rings accommodate almost all focuser's manufacturing tolerances. Second, it automatically centers the adapting laser in the focuser. Third, it provides at least two evenly distributed circular contacts on the focuser's inner tube surface preventing the adapting laser from pivoting and parallel to the focuser.Once the slop factor is taken away, you can quickly collimate your telescope in confidence to achieve perfect collimation every time. \u003c\/p\u003e\n\u003ch4\u003eSCA Eliminates Drawtube Slop\u003c\/h4\u003e\n\u003cp\u003eAll drawtube have manufacturing tolerances.And it requires larger diameter to accept various eyepieces and adapters.When a standard collimator is inserted, the gap between the drawtube and the inserting device became a slop problem.The rubber rings in the SCA expand radially according to users own adjustment to fill the gaps.This makes your collimator seats firmly in your drawtube becoming part of your telescope for a secure and \u003cb\u003erepeatable\u003c\/b\u003e installation.\u003c\/p\u003e\n\u003ch4\u003eSCA Keeps Laser Perfectly Parallel to the Focuser\u003c\/h4\u003e\n\u003cp\u003eThe patented multiple expanding o-rings design provides solid 360 degress even grip to the inner focuser surface keeping the adapting laser perfectly parallel to the focuser tube elimating any possible tip or tilt error from the conventional thumbscrew locking mechanism.\u003c\/p\u003e\n\u003ch4\u003eSCA Eliminates unstable locking from thumbscrew or unified compression ring\u003c\/h4\u003e\n\u003cp\u003eThe optical axis is shifted when the inserting device is locked in by thumbscrew.In some cases, some poorly made unified compression ring can cause unstable tilt when locking in the drawtube due to loose tolerances between the compression ring, inner groove, and the uneven tip of the locking thumbscrew in a drawtube.The SCA adapts the collimator itself without using the thumbscrew or the unified compression ring.\u003c\/p\u003e\n\u003ch4\u003eSCA Accepts the Imperfection of a Drawtube\u003c\/h4\u003e\n\u003cp\u003eSmall imperfection inside the drawtube like dents, scratches, and uneven burrs, the rubber rings compensates the errors and faithfully centers the collimator in the tube.In addition, even if the drawtube is slightly deformed in diameter, egg-shaped, the rubber rings in the SCA will compensate the differences and faithfully centers the collimator. A metal collet design will not be able to transform itself to the deformed shape to compensate the imperfection of a drawtube for a sturdy adaption.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMore SCA Laser Collimator Features:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003ch4\u003eLaser Engraved 45º Targeting Faceplate\u003c\/h4\u003e\n\u003cp\u003eThe targeting faceplate displays the returning laser spot with a clear visual reference during adjustment. That allows you to align your primary mirror from the rear of the telescope and eliminates traveling to the front of your scope repeatedly during collimation. Collimating without the targeting faceplate, you will not be able to adjust the primary mirror in real time referencing the laser dot.In other words, you often get lost on which adjustment screws you used due to traveling back and forth for referencing the direction you have adjusted.This results in considerable time to complete the collimation and defeats the purpose of quick and easy laser collimation. HoTech understands the importance of this, so the faceplate is a standard feature in our laser collimator.All astronomers deserve to have it without paying any extra! HoTech understands the importance of this, so the faceplate is a standard feature in our laser collimator.All astronomers deserve to have it without paying any extra! In addition, our faceplate viewer’s pattern is laser engraved to ensure a long lasting sharp targeting grid for best visual effects. Unlike other collimators, the target is not a sticker that will peel, or paint that can rub or chip off. We understand that you are paying for a precision instrument that is supposed to be well made.\u003c\/p\u003e\n\u003ch4\u003eFinest Projecting Laser Dot\u003c\/h4\u003e\n\u003cp\u003eKeeping the laser dot to the finest point is the key to precision collimation. But when you look closely at the laser dot from brand to brand, most laser dots appear large, not really a fine point as you imagined.This means there is guess work involved when you try to center the dot; not just centering the laser dot to the center of the faceplate, but also centering the center of the dot itself.This does not make any sense when you are trying to take the advantage of the collimated laser beam's characteristic \"which has a low beam divergence, so that the beam radius does not undergo significant changes within moderate propagation distances.\" In other words, the laser beam size within the collimation distance (laser collimator to the primary mirror and back to the faceplate) should remain a constant fine point. As you know, most laser collimator brands are not really laser manufacturers.They install an off-the-shelf laser module or pointer and align the laser in a tube without REALLY considering the user’s application, namely the operating distance for a laser beam size.HoTech has been designing and building laser modules and systems for over 10 years for various professional industries.We know exactly how a laser should work.We limit our laser beam to the finest size in the correct operating distance for optimal effect.Our understanding and experiences with the laser design permit you to have an effective and precision collimation.\u003c\/p\u003e\n\u003ch4\u003eProprietary Crosshair Laser Collimator Available\u003c\/h4\u003e\n\u003cp\u003eWith our proprietary laser crosshair, user can zero-in the laser with ease during the final collimation on the secondary and the primary mirror. The crosshair model still exibits a precision laser center dot, but with a touch of four extended laser lines from the center dot. The extension lines (crosshair) of the laser dot is the most intuitive way to guide the laser pointing for an accurate adjustment. During the secondary mirror collimation, a single dot laser projecting on the approximate center of the pre-loaded donut is difficult to identify if the laser dot is exactly on the center.The crosshair laser can easily help user to adjust the secondary mirror to point the laser on the exact center with the help of the crosshair line. During the final primary mirror collimation, the returning laser dot often hides into the laser exiting hole preventing user to identify if the returning laser is at exact center of the hole. Again, the crosshair will visually guide the user to center the laser dot with ease even when the center laser dot disappears into the exiting hole.It is a very effective and essential feature to the SCA Laser Collimator in obtaining at even higher degree of accuracy with ease.\u003c\/p\u003e\n\u003ch4\u003eHigh Accuracy Laser Alignment\u003c\/h4\u003e\n\u003cp\u003eOur laser collimator is well centered and aligned which are critical factors for an accurate collimation.But you will be surprised that many laser collimators in the market fail in this regard.The reason is in the design and understanding of the product itself. We considered all aspect of parameters in our design.Parameters like the alignment mechanism, mechanical and optical structure of the laser itself, and more are taken as part of our design.For instance, some laser collimators actually install an off-the-shelf laser pointer in the casing.It is very cost effective (for seller), but it inherits numerous problems.In many cases, the laser pointer might not install perfectly centered in the casing due to pointer size variations and the added alignment mechanism.So the laser itself is not positioned on the true alignment point and optical axis. As the result, the laser can never be center-aligned in the enclosure.It is possible to align the laser beam parallel to the optical path but always with an offset along the optical axis.This means the laser beam is off no matter how you center adapt the laser collimator to the focuser.\u003c\/p\u003e\n\u003ch4\u003eLight Weight Design and All Aluminum Body Machined with High Precision CNC\u003c\/h4\u003e\n\u003cp\u003eMany laser collimator manufacturers give users the wrong impression, “big and heavy means rugged and stable.” Instead, HoTech engineers successfully cut the unnecessary weight on the laser collimator because we understand that additional weight on a telescope (especially open structure Newtonians) will create imbalance and structure sagging.In addition, the heavier the device is, the more inertia it will have during an impact from an accidental drop.In such an accident, the inertia force can cause more damage to the internal alignment mechanism because there is more energy required to dissipate from the impact.Therefore, the lightweight design on our laser collimator makes you gain reliable precision collimation.And of course our laser collimator uses aero-space grade lightweight aluminum material and CNC machined with the tightest tolerances, then sand blasted and anodized to protect from harsh environment. Nothing has been sacrificed while you get a long lasting state-of-the-art collimation instrument.\u003c\/p\u003e\n\u003ch4\u003eLong Lasting Battery Life\u003c\/h4\u003e\n\u003cp\u003eBy using the CR123, 3V battery as our laser power source, our laser collimator has over 65 hours of continuous use battery life time. The included CR123, 3V lithium battery operates well under a typical cold night and it has a 10 years shelf life. This is a great advantage that you don't have to worry about changing the tiny hard to find cell batteries frequently in the dark like other collimators.\u003c\/p\u003e\n\u003ch4\u003eDiffraction Grating Pattern Lens on our SCA Laser Collimator\u003c\/h4\u003e\n\u003cp\u003eSince our SCA Laser Collimator is already accurate with the SCA technology, fine laser dot, and the built-in 45 degrees faceplate, there is no need to use the DFG pattern to align the primary mirror of a Newtonian telescope.The purpose of using DFG pattern is to gross alignment the primary mirror.The user aligns the primary mirror by referencing the shadow of the secondary in the projected DFG pattern on a wall, and user counts the DFG dots around the shadow to center in the shadow.This method cannot achieve accurate alignment because the gap between each dot can make a big alignment difference.At the final alignment stage, the user must bring the laser dot back to the laser exit (the center of the 45 degrees faceplate).Our built-in 45 degrees faceplate allows you to align your primary mirror from the rear of the telescope eliminating traveling to the front of your scope repeatedly during collimation like other collimators.Therefore, there is no need to use DFG lens in conjunction with our SCA Laser Collimator.  \u003c\/p\u003e\n\u003ch3\u003eTechnical Specification\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eModel: 2″ Single Dot SCA Laser Collimator\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFocuser Size: 1.25″ \u0026amp; 2″\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLaser Wavelength: 650nm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLaser Output Power: Class II, \u0026lt; 1mW\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eOperating Voltage: 3V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBattery: One 3V Lithium Battery (included), 10 yrs shelf life, 40+ Operating Hours\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWeight: 6.5 oz. w\/ battery\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDimension: 1.2″\/30mm dia. x 5″\/127mm (L)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eConstruction: All Areo-Space Grade Anodize Aluminum Case\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eRecommend Use: Ideal for Newtonian Style Telescope, and SCT Style telescope requires one-time-only star collimation\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e2″ Laser Collimator\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBattery\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eManual\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eHotech 1-Year Warranty\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Hotech-SCA-Laser-Collimator-Instructions.pdf?v=1668109379\" target=\"_blank\"\u003eHoTech SCA Laser Collimator Instructions\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Hotech-SCA-Laser-Collimator-Manual-for-SCT.pdf?v=1668109410\" target=\"_blank\"\u003eHoTech SCA Laser Collimator Manual for SCT\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Hotech-Star-Collimation-Instructions.pdf?v=1668109541\" target=\"_blank\"\u003eHoTech Star Collimation Instructions\u003c\/a\u003e\u003c\/p\u003e","brand":"Hotech","offers":[{"title":"Default Title","offer_id":43133240344805,"sku":"HOT-SCA-2D","price":199.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/hotech-2-sca-dot-laser-collimator-sca-2d-astronomy-plus_53d028c8-f896-47ab-978c-81f1ea0a8344.png?v=1690484337"},{"product_id":"hotech-2-sca-crosshair-laser-collimator-sca-2c","title":"HoTech 2\" SCA Crosshair Laser Collimator (SCA-2C)","description":"\u003ch1\u003eHoTech 2\" SCA Crosshair Laser Collimator\u003c\/h1\u003e\n\u003cp\u003eThe HoTech 2\" SCA Crosshair Laser Collimator separates itself from all other laser collimators with its innovative self-centering adapter technology (SCA). This mechanism allows precise and \u003cb\u003eREPEATABLE \u003c\/b\u003einstallation in all brands of 1.25\" and 2\" telescope focusers thus provides accurate collimation. All laser collimators in the current market have one fundamental problem, slop in the adapting mechanism between the laser collimator and the telescope focuser.This problem is clearly recognized and often discussed among astronomers but so far there has been no definite solution in the market. No matter how tightly the tolerances machined on the laser collimator or the focuser, a small gap is required to allow installation of the laser collimator. Once the laser collimator is inserted, the required gap becomes a problem. A laser collimator is secured with one or more thumbscrews or unified compression ring. Both methods introduce very critical issues, namely inconsistant adaption from \u003cb\u003e\u003ci\u003eoff-axis\u003c\/i\u003e\u003c\/b\u003e (axial) and \u003cb\u003e\u003ci\u003enone parallel-axis\u003c\/i\u003e\u003c\/b\u003e installment that instantly destroys the precision of your collimation instrument along the entire optical axis. \u003cb\u003eOur Self-Centering Adapter cleverly eliminates the focuser slop by linearly compressing the built-in rubber rings.\u003c\/b\u003e By doing this, the diameter of the rings expands to compensate the gap.Because all rings evenly expand radially in diameter from the compression, this automatically centers the laser collimator in the focuser draw tube. And most importantly, our SCA laser collimator can be tightly installed in the focuser for a repeatable installation to provide an accurate collimation. In summary, \u003cb\u003eour SCA adapter serves three critical functions\u003c\/b\u003e. First, its expansion rings accommodate almost all focuser's manufacturing tolerances. Second, it automatically centers the adapting laser in the focuser. Third, it provides at least two evenly distributed circular contacts on the focuser's inner tube surface preventing the adapting laser from pivoting and parallel to the focuser.Once the slop factor is taken away, you can quickly collimate your telescope in confidence to achieve perfect collimation every time. \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eSCA Eliminates Drawtube Slop\u003c\/h4\u003e\n\u003cp\u003eAll drawtube have manufacturing tolerances.And it requires larger diameter to accept various eyepieces and adapters.When a standard collimator is inserted, the gap between the drawtube and the inserting device became a slop problem.The rubber rings in the SCA expand radially according to users own adjustment to fill the gaps.This makes your collimator seats firmly in your drawtube becoming part of your telescope for a secure and \u003cb\u003erepeatable\u003c\/b\u003e installation.\u003c\/p\u003e\n\u003ch4\u003eSCA Keeps Laser Perfectly Parallel to the Focuser\u003c\/h4\u003e\n\u003cp\u003eThe patented multiple expanding o-rings design provides solid 360 degress even grip to the inner focuser surface keeping the adapting laser perfectly parallel to the focuser tube elimating any possible tip or tilt error from the conventional thumbscrew locking mechanism.\u003c\/p\u003e\n\u003ch4\u003eSCA Eliminates unstable locking from thumbscrew or unified compression ring\u003c\/h4\u003e\n\u003cp\u003eThe optical axis is shifted when the inserting device is locked in by thumbscrew.In some cases, some poorly made unified compression ring can cause unstable tilt when locking in the drawtube due to loose tolerances between the compression ring, inner groove, and the uneven tip of the locking thumbscrew in a drawtube.The SCA adapts the collimator itself without using the thumbscrew or the unified compression ring.\u003c\/p\u003e\n\u003ch4\u003eSCA Accepts the Imperfection of a Drawtube\u003c\/h4\u003e\n\u003cp\u003eSmall imperfection inside the drawtube like dents, scratches, and uneven burrs, the rubber rings compensates the errors and faithfully centers the collimator in the tube.In addition, even if the drawtube is slightly deformed in diameter, egg-shaped, the rubber rings in the SCA will compensate the differences and faithfully centers the collimator. A metal collet design will not be able to transform itself to the deformed shape to compensate the imperfection of a drawtube for a sturdy adaption.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMore SCA Laser Collimator Features:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003ch4\u003eLaser Engraved 45º Targeting Faceplate\u003c\/h4\u003e\n\u003cp\u003eThe targeting faceplate displays the returning laser spot with a clear visual reference during adjustment. That allows you to align your primary mirror from the rear of the telescope and eliminates traveling to the front of your scope repeatedly during collimation. Collimating without the targeting faceplate, you will not be able to adjust the primary mirror in real time referencing the laser dot.In other words, you often get lost on which adjustment screws you used due to traveling back and forth for referencing the direction you have adjusted.This results in considerable time to complete the collimation and defeats the purpose of quick and easy laser collimation. HoTech understands the importance of this, so the faceplate is a standard feature in our laser collimator.All astronomers deserve to have it without paying any extra! HoTech understands the importance of this, so the faceplate is a standard feature in our laser collimator.All astronomers deserve to have it without paying any extra! In addition, our faceplate viewer’s pattern is laser engraved to ensure a long lasting sharp targeting grid for best visual effects. Unlike other collimators, the target is not a sticker that will peel, or paint that can rub or chip off. We understand that you are paying for a precision instrument that is supposed to be well made.\u003c\/p\u003e\n\u003ch4\u003eFinest Projecting Laser Dot\u003c\/h4\u003e\n\u003cp\u003eKeeping the laser dot to the finest point is the key to precision collimation. But when you look closely at the laser dot from brand to brand, most laser dots appear large, not really a fine point as you imagined.This means there is guess work involved when you try to center the dot; not just centering the laser dot to the center of the faceplate, but also centering the center of the dot itself.This does not make any sense when you are trying to take the advantage of the collimated laser beam's characteristic \"which has a low beam divergence, so that the beam radius does not undergo significant changes within moderate propagation distances.\" In other words, the laser beam size within the collimation distance (laser collimator to the primary mirror and back to the faceplate) should remain a constant fine point. As you know, most laser collimator brands are not really laser manufacturers.They install an off-the-shelf laser module or pointer and align the laser in a tube without REALLY considering the user’s application, namely the operating distance for a laser beam size.HoTech has been designing and building laser modules and systems for over 10 years for various professional industries.We know exactly how a laser should work.We limit our laser beam to the finest size in the correct operating distance for optimal effect.Our understanding and experiences with the laser design permit you to have an effective and precision collimation.\u003c\/p\u003e\n\u003ch4\u003eProprietary Crosshair Laser Collimator Available\u003c\/h4\u003e\n\u003cp\u003eWith our proprietary laser crosshair, user can zero-in the laser with ease during the final collimation on the secondary and the primary mirror. The crosshair model still exibits a precision laser center dot, but with a touch of four extended laser lines from the center dot. The extension lines (crosshair) of the laser dot is the most intuitive way to guide the laser pointing for an accurate adjustment. During the secondary mirror collimation, a single dot laser projecting on the approximate center of the pre-loaded donut is difficult to identify if the laser dot is exactly on the center.The crosshair laser can easily help user to adjust the secondary mirror to point the laser on the exact center with the help of the crosshair line. During the final primary mirror collimation, the returning laser dot often hides into the laser exiting hole preventing user to identify if the returning laser is at exact center of the hole. Again, the crosshair will visually guide the user to center the laser dot with ease even when the center laser dot disappears into the exiting hole.It is a very effective and essential feature to the SCA Laser Collimator in obtaining at even higher degree of accuracy with ease.\u003c\/p\u003e\n\u003ch4\u003eHigh Accuracy Laser Alignment\u003c\/h4\u003e\n\u003cp\u003eOur laser collimator is well centered and aligned which are critical factors for an accurate collimation.But you will be surprised that many laser collimators in the market fail in this regard.The reason is in the design and understanding of the product itself. We considered all aspect of parameters in our design.Parameters like the alignment mechanism, mechanical and optical structure of the laser itself, and more are taken as part of our design.For instance, some laser collimators actually install an off-the-shelf laser pointer in the casing.It is very cost effective (for seller), but it inherits numerous problems.In many cases, the laser pointer might not install perfectly centered in the casing due to pointer size variations and the added alignment mechanism.So the laser itself is not positioned on the true alignment point and optical axis. As the result, the laser can never be center-aligned in the enclosure.It is possible to align the laser beam parallel to the optical path but always with an offset along the optical axis.This means the laser beam is off no matter how you center adapt the laser collimator to the focuser.\u003c\/p\u003e\n\u003ch4\u003eLight Weight Design and All Aluminum Body Machined with High Precision CNC\u003c\/h4\u003e\n\u003cp\u003eMany laser collimator manufacturers give users the wrong impression, “big and heavy means rugged and stable.” Instead, HoTech engineers successfully cut the unnecessary weight on the laser collimator because we understand that additional weight on a telescope (especially open structure Newtonians) will create imbalance and structure sagging.In addition, the heavier the device is, the more inertia it will have during an impact from an accidental drop.In such an accident, the inertia force can cause more damage to the internal alignment mechanism because there is more energy required to dissipate from the impact.Therefore, the lightweight design on our laser collimator makes you gain reliable precision collimation.And of course our laser collimator uses aero-space grade lightweight aluminum material and CNC machined with the tightest tolerances, then sand blasted and anodized to protect from harsh environment. Nothing has been sacrificed while you get a long lasting state-of-the-art collimation instrument.\u003c\/p\u003e\n\u003ch4\u003eLong Lasting Battery Life\u003c\/h4\u003e\n\u003cp\u003eBy using the CR123, 3V battery as our laser power source, our laser collimator has over 65 hours of continuous use battery life time. The included CR123, 3V lithium battery operates well under a typical cold night and it has a 10 years shelf life. This is a great advantage that you don't have to worry about changing the tiny hard to find cell batteries frequently in the dark like other collimators.\u003c\/p\u003e\n\u003ch4\u003eDiffraction Grating Pattern Lens on our SCA Laser Collimator\u003c\/h4\u003e\n\u003cp\u003eSince our SCA Laser Collimator is already accurate with the SCA technology, fine laser dot, and the built-in 45 degrees faceplate, there is no need to use the DFG pattern to align the primary mirror of a Newtonian telescope.The purpose of using DFG pattern is to gross alignment the primary mirror.The user aligns the primary mirror by referencing the shadow of the secondary in the projected DFG pattern on a wall, and user counts the DFG dots around the shadow to center in the shadow.This method cannot achieve accurate alignment because the gap between each dot can make a big alignment difference.At the final alignment stage, the user must bring the laser dot back to the laser exit (the center of the 45 degrees faceplate).Our built-in 45 degrees faceplate allows you to align your primary mirror from the rear of the telescope eliminating traveling to the front of your scope repeatedly during collimation like other collimators.Therefore, there is no need to use DFG lens in conjunction with our SCA Laser Collimator.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specification\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eModel: 2″ SCA Crosshair Laser Collimator\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFocuser Size: 1.25″ \u0026amp; 2″\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLaser Wavelength: 650nm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLaser Output Power: Class II, \u0026lt; 1mW\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eOperating Voltage: 3V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBattery: One 3V Lithium Battery (included), 10 yrs shelf life, 40+ Operating Hours\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWeight: 6.5 oz. w\/ battery\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDimension: 1.2″\/30mm dia. x 5″\/127mm (L)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eConstruction: All Areo-Space Grade Anodize Aluminum Case\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eRecommend Use: Ideal for Newtonian Style Telescope\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e2″ Laser Collimator\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBattery\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eManual\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eHotech 1-Year Warranty\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Hotech-SCA-Laser-Collimator-Instructions.pdf?v=1668109379\" target=\"_blank\"\u003eHoTech SCA Laser Collimator Instructions\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Hotech-SCA-Laser-Collimator-Manual-for-SCT.pdf?v=1668109410\" target=\"_blank\"\u003eHoTech SCA Laser Collimator Manual for SCT\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Hotech-Star-Collimation-Instructions.pdf?v=1668109541\" target=\"_blank\"\u003eHoTech Star Collimation Instructions\u003c\/a\u003e\u003c\/p\u003e","brand":"Hotech","offers":[{"title":"Default Title","offer_id":43125731524837,"sku":"HOT-SCA-2C","price":234.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/hotech-2-sca-crosshair-laser-collimator-sca-2c-astronomy-plus_615495b8-648c-456e-9f36-b52671dfd927.png?v=1690484336"},{"product_id":"hotech-advanced-ct-laser-collimator-for-2-focuser-act-m2","title":"HoTech Advanced CT Laser Collimator for 2\" Focuser (ACT-M2)","description":"\u003ch2\u003eHoTech Advanced CT Laser Collimator for 2\" Focuser\u003c\/h2\u003e\n\u003ch4\u003eInnovation Brings Affordable and Portable Collimation Into Reality\u003c\/h4\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eSince the invention of the Cassegrain Telescope in 1672 by the French sculptor Sieur Guillaume Cassegrain, the Cassegrain Telescope has evolved into various derivative designs such as the more popular Ritchey-Chrétien, Dall-Kirkham, Schmidt-Cassegrain, and Maksutov-Cassegrain. The designs have gained their popularity because of their compact and simple to produce design. With different designs, star collimation is and has always been the only effective method to collimate for Cassegrain telescope owners.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eNow, backyard astronomers have an alternative to achieve excellent collimation conveniently using the HoTech Advanced CT Laser Collimator for 2″ Focuser. The Advanced CT Laser Collimator brings the collimating star to your telescope within arm reaching distance. With its short-range capability, you can perform collimation indoors – day or night – without being subjected to weather conditions. And best of all, this new collimator utilizes a clear and simple-to-read, large target display for the telescope alignment diagnostic. This large target display is positioned within a short focal distance of the telescope which allows you to collimate without guessing.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003eNo Star Required to Collimate\u003c\/h4\u003e\n\u003cp\u003eIn order to achieve an accurate star collimation, normally the amateur astronomer requires good seeing conditions with no cloud, no wind, stable temperature, no light pollution, a well-aligned telescope mount tracking system, telescope optical tube assemble (OTA) thermal equilibrium, and a good visible magnitude star. The visual quality of the referencing star is greatly affected by the prescribed factors most of which are all in Gods hand as you can see in the photo. Adjusting the collimation is guessing game where you move between front and the back of the telescope adjusting the corresponding alignment screw and holding your breath peeping through a high magnification eyepiece referencing the concentricity of the unstable defocused image. This can be an incredibly frustrating experience.\u003c\/p\u003e\n\u003cp\u003eAn artificial star can never simulate a real star because it is impossible to collimate with the telescope focus set at infinity. After artificial star collimation, you will need to adjust your focus back to infinity to view a real star by moving the primary mirror to a different position. The distance the primary mirror has been adjusted can accumulate mechanical tolerance errors. For some of the mass-produced SCTs, the “sticky baffle” on the primary mirror focusing mechanism may also cause mirror-flop. If a mirror-flop has occurred, it will affect the alignment position which in turn will render the collimation useless. Ideally, It is best to collimate your optics at the same viewing focusing position without major optical displacements to correspond to the final view setting. The Advanced CT Laser Collimator can accomplish this task without all the possible accumulated errors.\u003c\/p\u003e\n\u003cp\u003eThe large target display on the Advanced CT Laser Collimator brings you a clear visual cue of three projecting laser dots as the alignment reference at a very comfortable visual distance providing an accurate axial alignment error diagnostic. And during the entire collimation process, no major focusing is needed, thus minimizing the possible accumulated errors from the focusing adjustments. The referencing adjustments are made by bringing the three clearly discernable projected laser dots, projected on the target, into a concentric ring. No more peeping through the eyepiece looking for a changing, ambiguous star image. This alternative collimation method saves precious observing time by collimating the telescope and preparing the viewing programs at dusk or before dawn without the influences of the external environmental conditions.\u003c\/p\u003e\n\u003ch4\u003eCollimate Within Focal Distance From Your Telescope\u003c\/h4\u003e\n\u003cp\u003eThe Advanced CT Laser Collimator does not require long focal distances to achieve high-accuracy collimation. Utilizing the installed flat mirror at the focal point (eyepiece location), the collimator lasers double-passes both your primary and secondary mirrors and magnifies the alignment errors to a higher accuracy level. In addition, it also cuts the collimating distance in half-achieving near-field alignment process. The collimator is stationed within your telescope’s focal length directly in front of your telescope. Setting up for collimation, you will be standing between the telescope and the collimator aiming both the telescope and the collimator at each other. Then you will adjust the secondary mirror knob to bring the returning lasers on the same track. This is a very convenient one-man operation.\u003c\/p\u003e\n\u003ch4\u003eAt a Fraction of the Cost of Wavefront Interferometer Technology\u003c\/h4\u003e\n\u003cp\u003eThe state-of-the-art advanced laser optical alignment technology used in the Advanced CT Laser Collimator achieves the same rough alignment function of a costly large aperture interferometer commonly use in high-energy labs at a fraction of its cost. \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Advanced CT Laser Collimator uses three collimated lasers, evenly spaced apart, to sample large aperture optical elements in your telescope. The three parallel laser beams completely simulate the light path (flat-wavefront) from a distant star and pass through the entire telescope’s optical elements and reflect back to its target for a complete and accurate double-pass diagnostic reading of your telescope optical alignment. This innovative collimation technique and technology enables the amateur astronomer achieving far-field collimation as a near-field process.\u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003ePrecision CNC Machined Panel and Components\u003c\/h4\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThis beautifully designed instrument is precision machined from a solid block of aero-space grade aluminum. It is then hardened and anodized to keep the entire mounted laser system thermally stable allowing you to achieve accurate collimation. The rigid, ultra-thin profile, and light-weight design makes the unit portable and simple to setup and use.\u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003eCollimates All CT, SCT, Makustov \u0026amp; RC\u003c\/h4\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Advanced CT Laser Collimator simulates a real distant star light path, and as a result it can collimate most telescopes which primarily rely on star collimation. The collimation technique can be implemented on any size telescope. The current production model is designed to collimate telescopes with a primary mirror greater than 7-1\/5-inches and a secondary mirror obstruction diameter less than 6-1\/2-inches. For other larger sized telescope or for custom sizes, contact us.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eAdditional Features:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eCollimate Your Cassegrain Telescope\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWithout using a star\u003c\/li\u003e\n\u003cli\u003eIndoor or outdoor – day or night\u003c\/li\u003e\n\u003cli\u003eFocus stays at final view setting\u003c\/li\u003e\n\u003cli\u003eWithin focal distance from your telescope\u003c\/li\u003e\n\u003cli\u003eOne-man operation\u003c\/li\u003e\n\u003cli\u003ePortable and simple to setup and use\u003c\/li\u003e\n\u003cli\u003eWorks on CT, SCT, SN Mak, \u0026amp; RC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specification\u003c\/h3\u003e\n\u003ch4\u003eCollimates following types of telescopes\u003c\/h4\u003e\n\u003cp\u003eClassic Cassegrain\u003cbr\u003eSchmidt Cassegrain\u003cbr\u003eMaksutov-Cassegrain\u003cbr\u003eRitchey-Chretien\u003cbr\u003eDall-Kirkham\u003cbr\u003eand most dervative Cassegrain telescope designs\u003c\/p\u003e\n\u003ch4\u003eLaser Specification\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eOutput Power: Class II, 1mW\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWavelength: 650nm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eAlignment Lasers: 170mm diameter spaced apart\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCrosshair Laser: 90 deg. divergent optic\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePower Supply: One CR123, 3V Lithium battery\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTelescope aperture limitation on ACT-M2 model:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePrimary mirror larger than 170mm(6.7″) diameter to accept the alignment lasers\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSecondary mirror obstruction smaller than 170mm(6.7″) diameter without blocking the alignment lasers\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eAdvanced CT Laser Collimator\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePremium Carrying Case\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFine Adjustment Stage (FAS-01)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e2″ Reflector Mirror (RM2)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCR123, 3V lithium battery\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eHotech 1-Year Warranty\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/HoTech-Advanced-CT-Laser-Collimator-Manual.pdf?v=1668108314\" target=\"_blank\"\u003eHoTech Advanced CT Laser Collimator Manual\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.hotechusa.com\/searchresults.asp?cat=23\" target=\"_blank\"\u003eSee More\u003c\/a\u003e\u003c\/p\u003e","brand":"Hotech","offers":[{"title":"Default Title","offer_id":43125734277349,"sku":"HOT-ACT-M2","price":709.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/hotech-advanced-ct-laser-collimator-for-2-focuser-act-m2-astronomy-plus-1.webp?v=1690484381"},{"product_id":"hotech-advanced-ct-laser-collimator-for-1-25-focuser-act-m125","title":"HoTech Advanced CT Laser Collimator for 1.25\" Focuser (ACT-M125)","description":"\u003ch2\u003eHoTech Advanced CT Laser Collimator for 1.25\" Focuser\u003c\/h2\u003e\n\u003ch4\u003eInnovation Brings Affordable and Portable Collimation Into Reality\u003c\/h4\u003e\n\u003cp\u003eSince the invention of the Cassegrain Telescope in 1672 by the French sculptor Sieur Guillaume Cassegrain, the Cassegrain Telescope has evolved into various derivative designs such as the more popular Ritchey-Chrétien, Dall-Kirkham, Schmidt-Cassegrain, and Maksutov-Cassegrain. The designs have gained their popularity because of their compact and simple to produce design. With different designs, star collimation is and has always been the only effective method to collimate for Cassegrain telescope owners.\u003cbr\u003eNow, backyard astronomers have an alternative to achieve excellent collimation conveniently using the HoTech Advanced CT Laser Collimator for 1.25″ Focuser. The Advanced CT Laser Collimator brings the collimating star to your telescope within arm reaching distance. With its short-range capability, you can perform collimation indoors – day or night – without being subjected to weather conditions. And best of all, this new collimator utilizes a clear and simple-to-read, large target display for the telescope alignment diagnostic. This large target display is positioned within a short focal distance of the telescope which allows you to collimate without guessing.\u003c\/p\u003e\n\u003ch4\u003eNo Star Required to Collimate\u003c\/h4\u003e\n\u003cp\u003eIn order to achieve an accurate star collimation, normally the amateur astronomer requires good seeing conditions with no cloud, no wind, stable temperature, no light pollution, a well-aligned telescope mount tracking system, telescope optical tube assemble (OTA) thermal equilibrium, and a good visible magnitude star. The visual quality of the referencing star is greatly affected by the prescribed factors most of which are all in Gods hand as you can see in the photo. Adjusting the collimation is guessing game where you move between front and the back of the telescope adjusting the corresponding alignment screw and holding your breath peeping through a high magnification eyepiece referencing the concentricity of the unstable defocused image. This can be an incredibly frustrating experience. An artificial star can never simulate a real star because it is impossible to collimate with the telescope focus set at infinity. After artificial star collimation, you will need to adjust your focus back to infinity to view a real star by moving the primary mirror to a different position. The distance the primary mirror has been adjusted can accumulate mechanical tolerance errors. For some of the mass-produced SCTs, the “sticky baffle” on the primary mirror focusing mechanism may also cause mirror-flop. If a mirror-flop has occurred, it will affect the alignment position which in turn will render the collimation useless. Ideally, It is best to collimate your optics at the same viewing focusing position without major optical displacements to correspond to the final view setting. The Advanced CT Laser Collimator can accomplish this task without all the possible accumulated errors. The large target display on the Advanced CT Laser Collimator brings you a clear visual cue of three projecting laser dots as the alignment reference at a very comfortable visual distance providing an accurate axial alignment error diagnostic. And during the entire collimation process, no major focusing is needed, thus minimizing the possible accumulated errors from the focusing adjustments. The referencing adjustments are made by bringing the three clearly discernable projected laser dots, projected on the target, into a concentric ring. No more peeping through the eyepiece looking for a changing, ambiguous star image. This alternative collimation method saves precious observing time by collimating the telescope and preparing the viewing programs at dusk or before dawn without the influences of the external environmental conditions.\u003c\/p\u003e\n\u003ch4\u003eCollimate Within Focal Distance From Your Telescope\u003cbr\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe Advanced CT Laser Collimator does not require long focal distances to achieve high-accuracy collimation. Utilizing the installed flat mirror at the focal point (eyepiece location), the collimator lasers double-passes both your primary and secondary mirrors and magnifies the alignment errors to a higher accuracy level. In addition, it also cuts the collimating distance in half-achieving near-field alignment process. The collimator is stationed within your telescope's focal length directly in front of your telescope. Setting up for collimation, you will be standing between the telescope and the collimator aiming both the telescope and the collimator at each other. Then you will adjust the secondary mirror knob to bring the returning lasers on the same track. This is a very convenient one-man operation.\u003c\/p\u003e\n\u003ch4\u003eAt a Fraction of the Cost of Wavefront Interferometer Technology\u003c\/h4\u003e\n\u003cp\u003eThe state-of-the-art advanced laser optical alignment technology used in the Advanced CT Laser Collimator achieves the same rough alignment function of a costly large aperture interferometer commonly use in high-energy labs at a fraction of its cost. The Advanced CT Laser Collimator uses three collimated lasers, evenly spaced apart, to sample large aperture optical elements in your telescope. The three parallel laser beams completely simulate the light path (flat-wavefront) from a distant star and pass through the entire telescope’s optical elements and reflect back to its target for a complete and accurate double-pass diagnostic reading of your telescope optical alignment. This innovative collimation technique and technology enables the amateur astronomer achieving far-field collimation as a near-field process.\u003c\/p\u003e\n\u003ch4\u003ePrecision CNC Machined Panel and Components\u003c\/h4\u003e\n\u003cp\u003eThis beautifully designed instrument is precision machined from a solid block of aero-space grade aluminum. It is then hardened and anodized to keep the entire mounted laser system thermally stable allowing you to achieve accurate collimation. The rigid, ultra-thin profile, and light-weight design makes the unit portable and simple to setup and use.\u003c\/p\u003e\n\u003ch4\u003eCollimates All CT, SCT, Makustov \u0026amp; RC\u003c\/h4\u003e\n\u003cp\u003eThe Advanced CT Laser Collimator simulates a real distant star light path, and as a result it can collimate most telescopes which primarily rely on star collimation. The collimation technique can be implemented on any size telescope. The current production model is designed to collimate telescopes with a primary mirror greater than 7-1\/5-inches and a secondary mirror obstruction diameter less than 6-1\/2-inches. For other larger sized telescope or for custom sizes, contact us.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eAdditional Features:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eCollimate Your Cassegrain Telescope\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWithout using a star\u003c\/li\u003e\n\u003cli\u003eIndoor or outdoor – day or night\u003c\/li\u003e\n\u003cli\u003eFocus stays at final view setting\u003c\/li\u003e\n\u003cli\u003eWithin focal distance from your telescope\u003c\/li\u003e\n\u003cli\u003eOne-man operation\u003c\/li\u003e\n\u003cli\u003ePortable and simple to setup and use\u003c\/li\u003e\n\u003cli\u003eWorks on CT, SCT, SN Mak, \u0026amp; RC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specification\u003c\/h3\u003e\n\u003ch4\u003eCollimates following types of telescopes\u003c\/h4\u003e\n\u003cp\u003eClassic Cassegrain\u003cbr\u003eSchmidt Cassegrain\u003cbr\u003eMaksutov-Cassegrain\u003cbr\u003eRitchey-Chretien\u003cbr\u003eDall-Kirkham\u003cbr\u003eand most dervative Cassegrain telescope designs\u003c\/p\u003e\n\u003ch4\u003eLaser Specification\u003c\/h4\u003e\n\u003cp\u003eOutput Power: Class II, 1mW\u003cbr\u003eWavelength: 650nm\u003cbr\u003eAlignment Lasers: 170mm diameter spaced apart\u003cbr\u003eCrosshair Laser: 90 deg. divergent optic\u003cbr\u003ePower Supply: One CR123, 3V Lithium battery\u003cbr\u003eTelescope aperture limitation on ACT-M2 model:\u003cbr\u003ePrimary mirror larger than 170mm(6.7″) diameter to accept the alignment lasers\u003cbr\u003eSecondary mirror obstruction smaller than 170mm(6.7″) diameter without blocking the alignment lasers\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eAdvanced CT Laser Collimator\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePremium Carrying Case\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFine Adjustment Stage (FAS-01)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e1.25″ Reflector Mirror (RM125)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCR123, 3V lithium battery\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eHotech 1-Year Warranty\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/HoTech-Advanced-CT-Laser-Collimator-Manual.pdf?v=1668108314\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eHoTech Advanced CT Laser Collimator Manual\u003c\/a\u003e\u003c\/p\u003e","brand":"Hotech","offers":[{"title":"Default Title","offer_id":43125734310117,"sku":"HOT-ACT-M125","price":709.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/hotech-advanced-ct-laser-collimator-for-1-25-focuser-act-m125-astronomy-plus-1.webp?v=1690484381"},{"product_id":"hotech-2-reflector-mirror-rm2","title":"HoTech 2\" Reflector Mirror (RM2)","description":"\u003ch1\u003eHoTech 2\" Reflector Mirror\u003c\/h1\u003e\n\u003cp\u003eAdditional HoTech 2\" Reflector Mirror for Advanced CT Laser Collimator. Double-pass the lasers through the entire telescope optical elements for Advanced CT Laser Collimator to calibrate at higher alignment accuracy.\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan\u003eType: Plano-Flat Laser Mirror\u003cbr data-mce-fragment=\"1\"\u003eMaterial: BK7A\u003cbr data-mce-fragment=\"1\"\u003eSurface Flatness: λ\/8 @ 650nm\u003cbr data-mce-fragment=\"1\"\u003eCoating : S1, Aluminum, R\u0026gt;98% for random polarization. Uncoated transparent on S2\u003cbr data-mce-fragment=\"1\"\u003eMirror Position (measured from drawtube shoulder to the first surface of the mirror): 0.59″\/15mm\u003cbr data-mce-fragment=\"1\"\u003eDimension: 2″\/55mm dia. x 6.25″\/159mm (L)\u003cbr data-mce-fragment=\"1\"\u003eWeight: 3 oz.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan\u003e2″ Reflector Mirror\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/istronomyplus.com\/pages\/hotech-warranty?_pos=1\u0026amp;_psq=hotech+warra\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener\"\u003eHotech 1-Years Warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/HoTech-Advanced-CT-Laser-Collimator-Manual.pdf?v=1668108314\" target=\"_blank\"\u003eHoTech Advanced CT Laser Collimator Manual\u003c\/a\u003e\u003c\/p\u003e","brand":"Hotech","offers":[{"title":"Default Title","offer_id":43125734342885,"sku":"HOT-RM2","price":92.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/hotech-2-reflector-mirror-rm2-astronomy-plus_4e5118b9-f173-4f10-a886-2fddc5636538.png?v=1690484381"},{"product_id":"hotech-1-25-reflector-mirror-rm125","title":"HoTech 1.25\" Reflector Mirror (RM125)","description":"\u003ch2\u003eHoTech 1.25\" Reflector Mirror\u003c\/h2\u003e\n\u003cp\u003eAdditional HoTech 1.25\" Reflector Mirror for Advanced CT Laser Collimator. Double-pass the lasers through the entire telescope optical elements for Advanced CT Laser Collimator to calibrate at higher alignment accuracy.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Plano-Flat Laser Mirror\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e BK7A\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eSurface Flatness\u003c\/strong\u003e: λ\/8 @ 650nm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eCoating :\u003c\/strong\u003e S1, Aluminum, R\u0026gt;98% for random polarization. Uncoated transparent on S2\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eMirror Position (measured from drawtube shoulder to the first surface of the mirror)\u003c\/strong\u003e: 0.59″\/15mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eDimension:\u003c\/strong\u003e 1.25″\/31.75mm dia. x 4″\/102mm (L)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eWeight: \u003c\/strong\u003e1.86 oz.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan\u003e1.25″ Reflector Mirror\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eHotech 1-Year Warranty\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/HoTech-Advanced-CT-Laser-Collimator-Manual.pdf?v=1668108314\" target=\"_blank\"\u003eHoTech Advanced CT Laser Collimator Manual\u003c\/a\u003e\u003c\/p\u003e","brand":"Hotech","offers":[{"title":"Default Title","offer_id":43125734375653,"sku":"HOT-RM125","price":92.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/hotech-1-25-reflector-mirror-rm125-astronomy-plus_a7d2154c-53eb-40df-993a-99d27ee20513.png?v=1690484387"},{"product_id":"hotech-hyperstar-laser-collimator","title":"HoTech HyperStar Laser Collimator","description":"\u003ch2\u003eHoTech HyperStar Laser Collimator\u003c\/h2\u003e\n\u003cp\u003eThis patented HoTech HyperStar Laser Collimator elevates the HyperStar collimation into a new dimension.\u003c\/p\u003e\n\u003ch4\u003eAccurate Collimation without using a Star\u003c\/h4\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg height=\"128\" width=\"128\" src=\"https:\/\/www.hotechusa.com\/v\/vspfiles\/templates\/104\/images\/star%20test02.jpg\" alt=\"\" style=\"float: left;\"\u003e\u003c\/div\u003e\n\u003cp\u003eIn order to achieve an accurate star collimation, normally the amateur astronomer requires good seeing conditions with no cloud, no wind, stable temperature, no light pollution, a well-aligned telescope mount tracking system, telescope optical tube assemble (OTA) thermal equilibrium, and a good visible magnitude star. The visual quality of the referencing star is greatly affected by the prescribed factors most of which are all in Gods hand as you can see in the photo. Adjusting the collimation is guessing game where you move between front and the back of the telescope adjusting the corresponding alignment screw and holding your breath peeping through a high magnification eyepiece referencing the concentricity of the unstable defocused image. This can be an incredibly frustrating experience.\u003c\/p\u003e\n\u003cp\u003eAn artificial star can never simulate a real star because it is impossible to collimate with the telescope focus set at infinity. After artificial star collimation, you will need to adjust your focus back to infinity to view a real star by moving the primary mirror to a different focal position. The distance the primary mirror has been adjusted can accumulate mechanical tolerance errors. For some of the mass produced SCTs, the “sticky baffle” on the primary mirror focusing mechanism may also cause mirror-flop. If a mirror-flop has occurred, it will affect the alignment position which in turn will render the collimation useless. Ideally, it is best to collimate your optics at the same viewing focusing position without major optical displacements to correspond to the final view setting. The HyperStar Laser Collimator can accomplish this task without all the possible accumulated errors.\u003c\/p\u003e\n\u003ch4\u003eCollimate Within Focal Distance From Your Telescope\u003c\/h4\u003e\n\u003cp\u003eThe HyperStar Laser Collimator does not require long distances to achieve high-accuracy collimation. Utilizing the installed flat mirror at the focal point (imaging sensor location), the collimator lasers double-passes the optical train and magnifies the alignment errors to a higher accuracy level. In addition, it also cuts the collimating distance in half-achieving near-field alignment process. The collimator is stationed within your telescope’s focal length directly in front of your telescope. Setting up for collimation, you will be standing between the telescope and the collimator aiming both the telescope and the collimator at each other. Then you will adjust the HyperStar collimation knobs to bring the returning lasers on the same track. This is a very convenient one-man-operation collimation task.\u003c\/p\u003e\n\u003ch4\u003ePrecision CNC Machined Panel and Components\u003c\/h4\u003e\n\u003cp\u003eThis beautifully designed instrument is precision machined from a solid block of aero-space grade aluminum. It is then hardened and anodized to keep the entire mounted laser system thermally stable allowing you to achieve accurate collimation. The rigid, ultra-thin profile, and light-weight design makes the unit portable and simple to setup and use.\u003c\/p\u003e\n\u003ch4\u003eUpgrade Kit Available for ACT Laser Collimator Owners\u003c\/h4\u003e\n\u003cp\u003eFor users already purchased the Advanced CT Laser Collimator, you may purchase the corresponding Upgrade Kit without purchasing the laser unit. The Kit will include the proper sized HyperStar adapter and the new developed dual-sided reflector mirror for your convenience.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eAdditional Features:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eIntroducing the fast and precision laser collimator for HyperStar telescope\u003cbr\u003eThis patented collimator elevates the HyperStar collimation into a new dimension.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAccurate collimation without using a star.\u003c\/li\u003e\n\u003cli\u003eCollimate indoor at final view setting without taking up your precious observing time.\u003c\/li\u003e\n\u003cli\u003eAchieving complete optical train alignment using one device.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCommon Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1. The HLC-925 can collimate my SCT via the Hyperstar, but can I also collimate my SCT via the standard focuser on the back ?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA1. Yes, but on condition that your SCT has a 2'' focuser. In focuser collimation mode, you will need to remove the secondary mirror in order for the laser to properly co-align. You cannot use the scope in both mode at the same time.  Each configuration has its own collimation calibration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2. To collimate via the 2'' focuser, do I need additionnal accessories ?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA2. No. Since you already have a 2'' focuser, no need for additional accessories. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3. I only have a 1.25'' focuser. How can I use this product for regular collimation ?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA3. You will need the \u003ca rel=\"noopener\" href=\"https:\/\/istronomyplus.com\/products\/hotech-1-25-reflector-mirror-rm125\" target=\"_blank\"\u003eRM125 adapter\u003c\/a\u003e to use this collimator with a 1.25'' focuser. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4. Do I need RM2 adapter, or HK-925 adapter,  to use this product in regular collimation mode ? \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA4. The RM2 would be a redundent item, since the HLC-925 already has the necessary accessories to collimate in a 2'' focuser. The kit already include the HK-925 adapter.\u003c\/p\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eTechnical Specification\u003c\/h3\u003e\n\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003ch4\u003eLaser Specification\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eOutput Power: Class II, 1mW\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWavelength: 635nm and 650nm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eAlignment Lasers: 170mm diameter spaced apart\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCrosshair Laser: 90 deg. divergent optic\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePower Supply: One CR123, 3V Lithium battery\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eAdvanced CT Laser Collimator\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eHyperStar reflector mirror adapter\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eHigh accuracy dual-sided reflector mirror with detachable target cap\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFine Adjustment Stage\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCR123 3V battery\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePremium carrying case with manual\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eHotech 1-Year Warranty\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/HoTech-Advanced-CT-Laser-Collimator-Manual.pdf?v=1668108314\" target=\"_blank\"\u003eHoTech Advanced CT Laser Collimator Manual\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e","brand":"Hotech","offers":[{"title":"8'' Hyperstar","offer_id":43669965930725,"sku":"HOT-HLC-800","price":774.0,"currency_code":"CAD","in_stock":true},{"title":"9.25'' \u0026 11'' Hyperstar","offer_id":43669965963493,"sku":"HOT-HLC-925","price":795.0,"currency_code":"CAD","in_stock":true},{"title":"14'' Hyperstar","offer_id":43669965996261,"sku":"HOT-HLC-140","price":817.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/hotech-hyperstar-laser-collimator-astronomy-plus_edbab7b0-439c-4ba6-a2bc-83bfb2de56ec.png?v=1690484387"},{"product_id":"hotech-hyperstar-laser-collimator-upgrade-kit","title":"HoTech HyperStar Laser Collimator Upgrade Kit","description":"\u003ch2\u003eHoTech HyperStar Laser Collimator Upgrade Kit\u003c\/h2\u003e\n\u003cp\u003eFor users already purchased the Advanced CT Laser Collimator, you may purchase the corresponding HoTech HyperStar Laser Collimator Upgrade Kit without purchasing the laser unit. The Kit will include the proper sized HyperStar adapter and the new developed dual-sided reflector mirror for your convenience. This patented HoTech HyperStar Laser Collimator elevates the HyperStar collimation into a new dimension. \u003c\/p\u003e\n\u003ch4\u003eAccurate Collimation without using a Star\u003c\/h4\u003e\n\u003cp\u003eIn order to achieve an accurate star collimation, normally the amateur astronomer requires good seeing conditions with no cloud, no wind, stable temperature, no light pollution, a well-aligned telescope mount tracking system, telescope optical tube assemble (OTA) thermal equilibrium, and a good visible magnitude star. The visual quality of the referencing star is greatly affected by the prescribed factors most of which are all in Gods hand as you can see in the photo. Adjusting the collimation is guessing game where you move between front and the back of the telescope adjusting the corresponding alignment screw and holding your breath peeping through a high magnification eyepiece referencing the concentricity of the unstable defocused image. This can be an incredibly frustrating experience. An artificial star can never simulate a real star because it is impossible to collimate with the telescope focus set at infinity. After artificial star collimation, you will need to adjust your focus back to infinity to view a real star by moving the primary mirror to a different focal position. The distance the primary mirror has been adjusted can accumulate mechanical tolerance errors. For some of the mass produced SCTs, the “sticky baffle” on the primary mirror focusing mechanism may also cause mirror-flop. If a mirror-flop has occurred, it will affect the alignment position which in turn will render the collimation useless. Ideally, it is best to collimate your optics at the same viewing focusing position without major optical displacements to correspond to the final view setting. The HyperStar Laser Collimator can accomplish this task without all the possible accumulated errors.\u003c\/p\u003e\n\u003ch4\u003eCollimate Within Focal Distance From Your Telescope\u003c\/h4\u003e\n\u003cp\u003eThe HyperStar Laser Collimator does not require long distances to achieve high-accuracy collimation. Utilizing the installed flat mirror at the focal point (imaging sensor location), the collimator lasers double-passes the optical train and magnifies the alignment errors to a higher accuracy level. In addition, it also cuts the collimating distance in half-achieving near-field alignment process. The collimator is stationed within your telescope's focal length directly in front of your telescope. Setting up for collimation, you will be standing between the telescope and the collimator aiming both the telescope and the collimator at each other. Then you will adjust the HyperStar collimation knobs to bring the returning lasers on the same track. This is a very convenient one-man-operation collimation task. \u003c\/p\u003e\n\u003ch4\u003ePrecision CNC Machined Panel and Components\u003c\/h4\u003e\n\u003cp\u003eThis beautifully designed instrument is precision machined from a solid block of aero-space grade aluminum. It is then hardened and anodized to keep the entire mounted laser system thermally stable allowing you to achieve accurate collimation. The rigid, ultra-thin profile, and light-weight design makes the unit portable and simple to setup and use.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eAdditional Features:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eIntroducing the fast and precision laser collimator for HyperStar telescope\u003cbr\u003eThis patented collimator elevates the HyperStar collimation into a new dimension.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAccurate collimation without using a star.\u003c\/li\u003e\n\u003cli\u003eCollimate indoor at final view setting without taking up your precious observing time.\u003c\/li\u003e\n\u003cli\u003eAchieving complete optical train alignment using one device.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eIn the Box\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eHyperStar reflector mirror adapter\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eHigh accuracy dual-sided reflector mirror with detachable target cap\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eHotech 1-Year Warranty\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/HoTech-Advanced-CT-Laser-Collimator-Manual.pdf?v=1668108314\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eHoTech Advanced CT Laser Collimator Manual\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e","brand":"Hotech","offers":[{"title":"8'' Hyperstar","offer_id":43669975138533,"sku":"HOT-HK-800","price":170.0,"currency_code":"CAD","in_stock":true},{"title":"9.25 \u0026 11'' Hyperstar","offer_id":43669975171301,"sku":"HOT-HK-925","price":192.0,"currency_code":"CAD","in_stock":true},{"title":"14'' Hyperstar","offer_id":43669975204069,"sku":"HOT-HK-140","price":213.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/hotech-hyperstar-laser-collimator-upgrade-kit-astronomy-plus_13bf07b6-01c6-4dad-99a5-de067365d2cd.png?v=1690484387"},{"product_id":"howie-glatter-variable-laser-brightness-cap-upgrade-si-vlb","title":"Howie Glatter Variable Laser Brightness Cap Upgrade (SI-VLB)","description":"\u003ch2\u003eHowie Flatter Variable Laser Brightness Cap Upgrade\u003c\/h2\u003e\n\u003cp\u003eVariable Laser Brightness battery cap\/switch upgrade for laser collimators.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUse with a regular laser collimator in single beam mode to perform barlowed laser Newtonian primary mirror alignment on closed tube reflectors.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe Howie Glatter TuBLUG is inserted into the focusers’ draw tube in which the laser collimator then attaches to the otherside of the TuBLUG\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMatte-white 45 degree face and anti-reflection coated Barlow lens mounted in a central axial hole.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe Howie Glatter TuBLUG is easily visible from primary adjustment position and can be turned 180 degrees to face the front and has a cut-out.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eHowie Glatter TuBlug 2\" Newtonian Collimator \u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cdiv class=\"entry-content\"\u003e\n\u003cp\u003eHowie Glatter Limited Lifetime Warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Howie Glatter","offers":[{"title":"Default Title","offer_id":43125746499813,"sku":"HG-SI-VLB","price":84.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/howie-glatter-variable-laser-brightness-cap-upgrade-si-vlb-astronomy-plus-1.webp?v=1690484497"},{"product_id":"howie-glatter-square-grid-projection-attachment-si-hola-square","title":"Howie Glatter Square Grid Projection Attachment (SI-HOLA-SQUARE)","description":"\u003ch2\u003eHowie Glatter Square Grid Projection Attachment\u003c\/h2\u003e\n\u003cp\u003eWhen it comes to lasers and collimation, one of the most trusted names in the business is guru Howie Glatter. His uncompromising quality and dedication to above average products, not only put his name above the rest – but in demand as the finest available on today’s market. Usually a manufacturer doesn’t take the time to explain to a customer exactly why their product excels over others – or why it performs better – but not Howie. Here’s what he has to say about his new Howie Glatter Holographic Laser Collimator Attachment:\u003cbr\u003e\u003cbr\u003eThe holographic collimator has a removable diffractive optical element (“hologram”) placed in the beam, just ahead of the laser. It diffracts light from the laser to project a diverging, symmetrical pattern around the central beam which is quite useful for centering optical elements. My standard pattern is an illuminated ten line by ten line grid, forming a large square box enclosing eighty-one smaller squares. It covers a wider angle (21 degrees) than any other holographic collimator, which allows direct centering of f\/ 2.7 to f\/ 35 optics. It may seem counter-intuitive, but the square grid pattern gives greater sensitivity for centering circular optics of arbitrary size. If a mirror or lens is decentered by only a small amount against the grid pattern, it produces a proportionately larger asymmetry in the intersection points of the grid lines with the perimeter of the optic. Cross-hair patterns do not have this property.\u003cbr\u003eThe diffractors are individually fit to their collimators for maximum alignment accuracy, so if you have one of my holographic collimators and know someone else who has one, be careful not to switch diffractors. If switched, 15 second alignment accuracy in the holographic mode is likely to be lost, however, they will still fall within the several arc minute alignment tolerance of most other laser collimators. Because there are some collimating situations in which the diffracted pattern is unnecessary or unwanted, or maximum power in the central beam may be desired, the diffractor unscrews from the laser aperture, converting the holographic collimator to single beam mode. When it is screwed back it retains its alignment accuracy.”\u003cbr\u003e\u003cbr\u003eAccurate and Precise. What more could you ask?\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eA 10 x 10 line square grid pattern. It spreads 21 degrees which allows centering of optics as fast as f\/ 2.7. This pattern is recommended for general use because it can be used with the fastest telescopes likely to be encountered.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eRemovable diffractive optical element for use in Glatter Holographic Collimators.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eHowie Glatter Square Grid Projection Attachment\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cdiv class=\"entry-content\"\u003e\n\u003cp\u003eHowie Glatter Limited Lifetime Warranty\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Howie Glatter","offers":[{"title":"Default Title","offer_id":43125746761957,"sku":"HG-SI-HOLA-SQUARE","price":112.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/howie-glatter-square-grid-projection-attachment-si-hola-square-astronomy-plus-1.webp?v=1690484504"},{"product_id":"howie-glatter-concentric-circle-projection-attachment-si-hola-circle","title":"Howie Glatter Concentric Circle Projection Attachment (SI-HOLA-CIRCLE)","description":"\u003ch1\u003eHowie Glatter Concentric Circle Projection Attachment\u003c\/h1\u003e\n\u003cp\u003eWhen it comes to lasers and collimation, one of the most trusted names in the business is guru Howie Glatter. His uncompromising quality and dedication to above average products, not only put his name above the rest – but in demand as the finest available on today’s market. Usually a manufacturer doesn’t take the time to explain to a customer exactly why their product excels over others – or why it performs better – but not Howie. Here’s what he has to say about his new Howie Glatter Holographic Laser Collimator Attachment:\u003cbr\u003e\u003cbr\u003eThe holographic collimator has a removable diffractive optical element (“hologram”) placed in the beam, just ahead of the laser. It diffracts light from the laser to project a diverging, symmetrical pattern around the central beam which is quite useful for centering optical elements. My standard pattern is an illuminated ten line by ten line grid, forming a large square box enclosing eighty-one smaller squares. It covers a wider angle (21 degrees) than any other holographic collimator, which allows direct centering of f\/ 2.7 to f\/ 35 optics. It may seem counter-intuitive, but the square grid pattern gives greater sensitivity for centering circular optics of arbitrary size. If a mirror or lens is decentered by only a small amount against the grid pattern, it produces a proportionately larger asymmetry in the intersection points of the grid lines with the perimeter of the optic. Cross-hair patterns do not have this property.\u003cbr\u003eThe diffractors are individually fit to their collimators for maximum alignment accuracy, so if you have one of my holographic collimators and know someone else who has one, be careful not to switch diffractors. If switched, 15 second alignment accuracy in the holographic mode is likely to be lost, however, they will still fall within the several arc minute alignment tolerance of most other laser collimators. Because there are some collimating situations in which the diffracted pattern is unnecessary or unwanted, or maximum power in the central beam may be desired, the diffractor unscrews from the laser aperture, converting the holographic collimator to single beam mode. When it is screwed back it retains its alignment accuracy.”\u003cbr\u003e\u003cbr\u003eAccurate and Precise. What more could you ask?\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eA nine-concentric circle pattern that spans 10 degrees and will reach to the edge of f\/ 5.7 optics. Recommended for scopes around this focal ratio or slower. The Laser light is spread over a smaller area it is brighter than the square grid pattern, this makes it particularly useful with Cassegrain scopes, where the pattern impact is sometimes scrutinized on the mirror surface. The projected pattern is seen only by light that is scattered from dust, dirt, or optical roughness, so a brighter pattern is better, especially if the mirrors are very clean. \u003cbr\u003e\u003cbr\u003eRemovable diffractive optical element for use in Glatter Holographic Collimators.\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eHowie Glatter Concentric Circle Projection Attachment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cdiv class=\"entry-content\"\u003e\n\u003cp\u003eHowie Glatter Limited Lifetime Warranty\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Howie Glatter","offers":[{"title":"Default Title","offer_id":43125746827493,"sku":"HG-SI-HOLA-CIRCLE","price":154.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/howie-glatter-concentric-circle-projection-attachment-si-hola-circle-astronomy-plus-1.webp?v=1690484503"},{"product_id":"howie-glatter-cross-hair-circle-projection-attachment-si-hola-cross-hair","title":"Howie Glatter Cross-Hair \u0026 Circle Projection Attachment (SI-HOLA-CROSS-HAIR)","description":"\u003ch2\u003eHowie Glatter Cross-Hair \u0026amp; Circle Projection Attachment\u003c\/h2\u003e\n\u003cp\u003eWhen it comes to lasers and collimation, one of the most trusted names in the business is guru Howie Glatter. His uncompromising quality and dedication to above average products, not only put his name above the rest – but in demand as the finest available on today’s market. Usually a manufacturer doesn’t take the time to explain to a customer exactly why their product excels over others – or why it performs better – but not Howie. Here’s what he has to say about his new Howie Glatter Holographic Laser Collimator Attachment:\u003cbr\u003e\u003cbr\u003eThe holographic collimator has a removable diffractive optical element (“hologram”) placed in the beam, just ahead of the laser. It diffracts light from the laser to project a diverging, symmetrical pattern around the central beam which is quite useful for centering optical elements. My standard pattern is an illuminated ten line by ten line grid, forming a large square box enclosing eighty-one smaller squares. It covers a wider angle (21 degrees) than any other holographic collimator, which allows direct centering of f\/ 2.7 to f\/ 35 optics. It may seem counter-intuitive, but the square grid pattern gives greater sensitivity for centering circular optics of arbitrary size. If a mirror or lens is decentered by only a small amount against the grid pattern, it produces a proportionately larger asymmetry in the intersection points of the grid lines with the perimeter of the optic. Cross-hair patterns do not have this property.\u003cbr\u003eThe diffractors are individually fit to their collimators for maximum alignment accuracy, so if you have one of my holographic collimators and know someone else who has one, be careful not to switch diffractors. If switched, 15 second alignment accuracy in the holographic mode is likely to be lost, however, they will still fall within the several arc minute alignment tolerance of most other laser collimators. Because there are some collimating situations in which the diffracted pattern is unnecessary or unwanted, or maximum power in the central beam may be desired, the diffractor unscrews from the laser aperture, converting the holographic collimator to single beam mode. When it is screwed back it retains its alignment accuracy.”\u003cbr\u003e\u003cbr\u003eAccurate and Precise. What more could you ask?\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eUseful for aligning the returning beam on collimator face.\u003cbr\u003e\u003cbr\u003eRemovable diffractive optical element for use in Glatter Holographic Collimators.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eHowie Glatter Concentric Circle Projection Attachment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cdiv class=\"entry-content\"\u003e\n\u003cp\u003eHowie Glatter Limited Lifetime Warranty\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Howie Glatter","offers":[{"title":"Default Title","offer_id":43125746860261,"sku":"HG-SI-HOLA-CROSS-HAIR","price":84.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/howie-glatter-cross-hair-and-circle-projection-attachment-si-hola-cross-hair-astronomy-plus-1.webp?v=1690484504"},{"product_id":"howie-glatter-tublug-2-newtonian-collimator-si-tublug2","title":"Howie Glatter TuBlug 2\" Newtonian Collimator (SI-TUBLUG2)","description":"\u003ch2\u003eHowie Glatter TuBlug 2\" Newtonian Collimator\u003c\/h2\u003e\n\u003cp\u003eUse the Howie Glatter TuBlug 2\" with a regular laser collimator in single beam mode to perform barlowed laser Newtonian primary mirror alignment on closed tube reflectors. The Howie Glatter TuBlug is inserted into the focusers' draw tube in which the laser collimator then attaches to the otherside of the TuBLUG Matte-white 45 degree face and anti-reflection coated Barlow lens mounted in a central axial hole. The Howie Glatter TuBlug is easily visible from primary adjustment position and can be turned 180 degrees to face the front and has a cut-out.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUse with a regular laser collimator in single beam mode to perform barlowed laser Newtonian primary mirror alignment on closed tube reflectors.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe Howie Glatter TuBLUG is inserted into the focusers’ draw tube in which the laser collimator then attaches to the otherside of the TuBLUG\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMatte-white 45 degree face and anti-reflection coated Barlow lens mounted in a central axial hole.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe Howie Glatter TuBLUG is easily visible from primary adjustment position and can be turned 180 degrees to face the front and has a cut-out.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eHowie Glatter TuBlug 2\" Newtonian Collimator \u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cdiv class=\"entry-content\"\u003e\n\u003cp\u003eHowie Glatter Limited Lifetime Warranty\u003c\/p\u003e\n\u003cp\u003e\u003ca title=\"Collimator Instructions\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/The-Howie-Glatter-TuBlug.pdf?v=1668194228\" target=\"_blank\" data-mce-href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/The-Howie-Glatter-TuBlug.pdf?v=1668194228\"\u003eUser Instructions\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Howie Glatter","offers":[{"title":"Default Title","offer_id":43125746893029,"sku":"HG-SI-TUBLUG2","price":336.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/howie-glatter-tublug-2-newtonian-collimator-si-tublug2-astronomy-plus-1.webp?v=1690484504"},{"product_id":"howie-glatter-2-laser-collimator","title":"Howie Glatter 2\" Laser Collimator","description":"\u003ch2\u003eHowie Glatter 2\" Laser Collimator\u003c\/h2\u003e\nInside the collimator is a solid-state laser diode, which emits an intense laser beam through a front aperture, exactly along the central axis of the cylindrical collimator body. The beam acts as a “reference line” from which alignments are made. For a laser collimator it is of supreme importance that the beam be aligned with the collimator’s cylindrical axis, for if it is not, the resultant “alignment” of the telescope optics will be off-center and asymmetric, and the telescope will produce aberrated images.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e“When I started manufacturing laser collimators I realized that in order to produce consistent and accurate results they must be highly resistant to mechanical shock, so that internal laser alignment is maintained. I experimented with this aspect of collimator construction and developed a design which tremendously increased shock resistance. After aligning the laser within 15 arc seconds, I shock test each collimator by whacking it against a block of urethane plastic (urethane prevents marring), striking it at least a dozen times on three axis. I then recheck the laser alignment, and if it has not changed the collimator passes. I believe this is the most important difference setting my collimator apart from all others I know of. They will withstand a shock equivalent to dropping from eyepiece position, up the ladder on a big Dob, without alteration of laser alignment.”\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe beam from all red diode lasers used in collimators is fuzzy-edged and elliptical in cross-section. When collimating, you sometimes must judge the location of the center of the spot by eye. To improve collimating precision, all of my collimators (except 532nm) are supplied with a removable accessory plastic aperture stop having a 1mm hole, which push-fits into the laser aperture. It produces a tiny, circular beam impact which allows more accurate alignment. With the holographic collimators, it is not used at the same time as the optional holographic feature, and the diffractor must be removed to install the stop. With the stop inserted the beam impact at a distance of one meter or more looks like a star diffraction pattern, with a central dot surrounded by diffraction rings. The surrounding rings can help in centering the beam very accurately.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eI offer the red holographic collimators with a choice of either 650 nanometer or 635nm wavelength. The two lasers have the same radiometric power output, but because the human eye’s sensitivity to the shorter wavelength is greater, the 635nm. laser appears about two or three times brighter. The higher cost of 635nm laser diodes increases the collimator price, but it enables optional holographic collimation in brighter ambient light. If you intend to collimate in early twilight, it is a good choice. In darkness, however, the 650nm laser is quite adequate. Because single beam collimators concentrate all the laser light in the central beam, the 650nm laser is quite adequate for them.”\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003ePrecise… Accurate… and Durable… What more could you ask?\u003cbr\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSingle deep red beam operates at 635nm \/ 650nm \/ 532nm. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe Howie Glatter Holographic Laser Collimator incorporates a solid state laser diode that does not fade or change with time and use. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFactory-aligned to 15 arc-seconds providing 0.1 inch accuracy at a distance of 20 feet, \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe Howie Glatter Laser Collimator is shock resistant to keep its alignment – even when dropped. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIncludes 123A lithium battery, 1mm aperture stop, and protective case.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eHowie Glatter 2\" Laser Collimator - 635nm \/ 650nm \/ 532nm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eIncludes 123A lithium battery\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e1mm aperture stop\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eProtective case.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cdiv class=\"entry-content\"\u003e\n\u003cp\u003eHowie Glatter Limited Lifetime Warranty\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Howie Glatter","offers":[{"title":"635nm Red Beam","offer_id":43673364758757,"sku":"HG-SI-LC2-635","price":420.0,"currency_code":"CAD","in_stock":true},{"title":"650nm Red Beam","offer_id":43673364889829,"sku":"HG-SI-LC2-650","price":392.0,"currency_code":"CAD","in_stock":true},{"title":"532nm Green Beam","offer_id":43673365020901,"sku":"HG-SI-LC2-532","price":595.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/howie-glatter-2-laser-collimator-astronomy-plus.webp?v=1690484513"},{"product_id":"howie-glatter-1-25-laser-collimator","title":"Howie Glatter 1.25\" Laser Collimator","description":"\u003ch2\u003eHowie Glatter 1.25\" Laser Collimator\u003c\/h2\u003e\nWhen it comes to lasers and collimation, one of the most trusted names in the business is guru Howie Glatter. His uncompromising quality and dedication to above average products, not only put his name above the rest – but in demand as the finest available on today’s market. Usually a manufacturer doesn’t take the time to explain to a customer exactly why their product excels over others – or why it performs better – but not Howie. Here’s what he has to say about his new Howie Glatter Laser Collimator:\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e“The lasers in my collimators are class IIIa lasers (maximum beam power: 5 thousandths of a Watt), and are quite safe if used with reasonable precaution. Direct or mirror-reflected eye exposure to the laser beam should always be avoided! You must be careful when collimating to ensure that the beam does not enter anyone’s eye. There is no problem in viewing the beam’s impact directly on a surface as long as the surface produces a diffuse reflection. The beam impact may also be safely viewed on a mirror or lens surface if the reflected or transmitted beam is not directed towards your eye. Information from studies I have seen suggests that in order to induce permanent damage, a class IIIa laser beam must stay focused on the retina for a long time. It’s unlikely for this to happen because the pupil is a very small target and because we have a blink and aversion reflex to bright light. However, all precautions should still be followed to avoid the beam entering anyone’s eye! A badly miscollimated Newtonian or Cassegrain telescope may allow the beam to exit the front of the telescope, so when collimating, check first by pointing the telescope at a wall or screen to see if the beam is getting out. With unobstructed telescopes such as refractors, the beam will always exit the front of the telescope, so run a strip of masking tape across a diameter of the dew cap opening as a safety beam stop.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eInside the collimator is a solid-state laser diode, which emits an intense laser beam through a front aperture, exactly along the central axis of the cylindrical collimator body. The beam acts as a “reference line” from which alignments are made. For a laser collimator it is of supreme importance that the beam be aligned with the collimator’s cylindrical axis, for if it is not, the resultant “alignment” of the telescope optics will be off-center and asymmetric, and the telescope will produce aberrated images.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eWhen I started manufacturing laser collimators I realized that in order to produce consistent and accurate results they must be highly resistant to mechanical shock, so that internal laser alignment is maintained. I experimented with this aspect of collimator construction and developed a design which tremendously increased shock resistance. After aligning the laser within 15 arc seconds, I shock test each collimator by whacking it against a block of urethane plastic (urethane prevents marring), striking it at least a dozen times on three axis. I then recheck the laser alignment, and if it has not changed the collimator passes. I believe this is the most important difference setting my collimator apart from all others I know of. They will withstand a shock equivalent to dropping from eyepiece position, up the ladder on a big Dob, without alteration of laser alignment.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe beam from all red diode lasers used in collimators is fuzzy-edged and elliptical in cross-section. When collimating, you sometimes must judge the location of the center of the spot by eye. To improve collimating precision, all of my collimators (except 532nm) are supplied with a removable accessory plastic aperture stop having a 1mm hole, which push-fits into the laser aperture. It produces a tiny, circular beam impact which allows more accurate alignment. With the holographic collimators, it is not used at the same time as the holographic feature, and the diffractor must be removed to install the stop. With the stop inserted the beam impact at a distance of one meter or more looks like a star diffraction pattern, with a central dot surrounded by diffraction rings. The surrounding rings can help in centering the beam very accurately.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eI offer the red holographic collimators with a choice of either 650 nanometer or 635nm wavelength. The two lasers have the same radiometric power output, but because the human eye’s sensitivity to the shorter wavelength is greater, the 635nm. laser appears about two or three times brighter. The higher cost of 635nm laser diodes increases the collimator price, but it enables holographic collimation in brighter ambient light. If you intend to collimate in early twilight, it is a good choice. In darkness, however, the 650nm laser is quite adequate. Because single beam collimators concentrate all the laser light in the central beam, the 650nm laser is quite adequate for them.”\u003cbr\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003e\u003c\/h3\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSingle deep red beam operates at 635nm \/ 650nm. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe Howie Glatter Holographic Laser Collimator incorporates a solid state laser diode that does not fade or change with time and use. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFactory-aligned to 15 arc-seconds providing 0.1 inch accuracy at a distance of 20 feet, \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe Howie Glatter Laser Collimator is shock resistant to keep its alignment – even when dropped. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIncludes 123A lithium battery, 1mm aperture stop, and protective case.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eHowie Glatter 1.25\" Laser Collimator - 635nm \/ 650nm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eIncludes 123A lithium battery\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e1mm aperture stop\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eProtective case.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cdiv class=\"entry-content\"\u003e\n\u003cp\u003eHowie Glatter Limited Lifetime Warranty\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Howie Glatter","offers":[{"title":"635nm","offer_id":43673062342885,"sku":"HG-SI-LC125-635","price":308.0,"currency_code":"CAD","in_stock":true},{"title":"650nm","offer_id":43673062605029,"sku":"HG-SI-LC125-650","price":294.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/howie-glatter-1-25-laser-collimator-astronomy-plus.webp?v=1690484513"},{"product_id":"howie-glatter-1-25-2-laser-collimator","title":"Howie Glatter 1.25\"-2\" Laser Collimator","description":"\u003ch2\u003eHowie Glatter 1.25\"-2\" Laser Collimator\u003c\/h2\u003e\n\u003cp\u003eWhen I started manufacturing laser collimators I realized that in order to produce consistent and accurate results they must be highly resistant to mechanical shock, so that internal laser alignment is maintained. I experimented with this aspect of collimator construction and developed a design which tremendously increased shock resistance. After aligning the laser within 15 arc seconds, I shock test each collimator by whacking it against a block of urethane plastic (urethane prevents marring), striking it at least a dozen times on three axis. I then recheck the laser alignment, and if it has not changed the collimator passes. I believe this is the most important difference setting my collimator apart from all others I know of. They will withstand a shock equivalent to dropping from eyepiece position, up the ladder on a big Dob, without alteration of laser alignment.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe beam from all red diode lasers used in collimators is fuzzy-edged and elliptical in cross-section. When collimating, you sometimes must judge the location of the center of the spot by eye. To improve collimating precision, all of my collimators (except 532nm) are supplied with a removable accessory plastic aperture stop having a 1mm hole, which push-fits into the laser aperture. It produces a tiny, circular beam impact which allows more accurate alignment. With the holographic collimators, it is not used at the same time as the holographic feature, and the diffractor must be removed to install the stop. With the stop inserted the beam impact at a distance of one meter or more looks like a star diffraction pattern, with a central dot surrounded by diffraction rings. The surrounding rings can help in centering the beam very accurately.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eI offer the red holographic collimators with a choice of either 650 nanometer or 635nm wavelength. The two lasers have the same radiometric power output, but because the human eye’s sensitivity to the shorter wavelength is greater, the 635nm. laser appears about two or three times brighter. The higher cost of 635nm laser diodes increases the collimator price, but it enables holographic collimation in brighter ambient light. If you intend to collimate in early twilight, it is a good choice. In darkness, however, the 650nm laser is quite adequate. Because single beam collimators concentrate all the laser light in the central beam, the 650nm laser is quite adequate for them.”\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003ePrecise… Accurate… and Durable… What more could you ask?\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSingle deep red beam operates at 635nm \/ 650nm. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe Howie Glatter Holographic Laser Collimator incorporates a solid state laser diode that does not fade or change with time and use. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFactory-aligned to 15 arc-seconds providing 0.1 inch accuracy at a distance of 20 feet, \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe Howie Glatter Laser Collimator is shock resistant to keep its alignment – even when dropped. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIncludes 123A lithium battery, 1mm aperture stop, and protective case.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eHowie Glatter 2\" \/ 1.25\" Laser Collimator - 635nm \/ 650nm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eIncludes 123A lithium battery\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e1mm aperture stop\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eProtective case.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cdiv class=\"entry-content\"\u003e\n\u003cp\u003eHowie Glatter Limited Lifetime Warranty\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Howie Glatter","offers":[{"title":"635nm Red Beam","offer_id":43673246171365,"sku":"HG-SI-LC2125-635","price":448.0,"currency_code":"CAD","in_stock":true},{"title":"650nm Red Beam","offer_id":43673246499045,"sku":"HG-SI-LC2125-650","price":434.0,"currency_code":"CAD","in_stock":true},{"title":"532nm Green Beam","offer_id":43673246761189,"sku":"HG-SI-LC2125-532","price":658.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/howie-glatter-1-25-2-laser-collimator-astronomy-plus.webp?v=1690484513"},{"product_id":"antares-1-25-laser-collimator-lc","title":"Antares 1.25\" Laser Collimator (LC)","description":"\u003ch2\u003eAntares 1.25\" Laser Collimator\u003c\/h2\u003e\n\u003cp\u003eAlign your optics with a precision the Antares 1.25\" Laser Collimator. An absolute must for Aspheric system performance. Lathe collimated.  \u003c\/p\u003e\n\u003cp\u003e-Please note that we do not accept returns for collimation tools. We will only accept exchange for another collimation tool.\u003c\/p\u003e\n\u003cdiv class=\"woocommerce-product-details__short-description\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\nAntares 1.25\" Laser Collimator\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"woocommerce-product-details__short-description\"\u003e\n\u003cbr\u003e\n\u003cdiv class=\"value\" data-mce-fragment=\"1\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAntares 1-Year Warranty\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Antares","offers":[{"title":"Default Title","offer_id":43133397205221,"sku":"ANT-LC","price":77.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/antares-1-25-laser-collimator-lc-astronomy-plus.webp?v=1690486229"},{"product_id":"hotech-astro-aimer-g3-htgl-g3","title":"Hotech Astro Aimer G3 Laser (HTGL-G3)","description":"\u003ch1\u003eHotech Astro Aimer G3 \u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h1\u003e\n\u003cp\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eWater Resistant for all Weather Condition\u003cbr data-mce-fragment=\"1\"\u003eNow you can take your Astro Aimer to anywhere, including the dewiest of star parties. It’s perfect for camping, hiking, and rafting. Use it in the rain, or for anyemergency situation in almost any environment.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eNear 5mW Class IIIa High Output Green Laser\u003cbr data-mce-fragment=\"1\"\u003eGreen laser is 20 times brighter than red laser at the same output power as perceived by human eyes. The Class IIIa output laser power allows you to visually trace the laser line to the exact pointed star or object.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eLaser ON light indicator\u003cbr data-mce-fragment=\"1\"\u003eWhen laser is turned on, the blue LED light under laser switch will light up, shows you the green laser is on so you will not accidentally point to others or yourself.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eRed and white LED flashlights\u003cbr data-mce-fragment=\"1\"\u003eControlled by knurled finish flashlight cap for easy turning, 3 variable brightness modes of red LED, low and intermediate modes for map reading, and high brightness mode (4,000 mcd) for night illumination without disrupting other star gazers' dark adapted vision. High efficient superbright white LEDs for any indoor\u003cbr data-mce-fragment=\"1\"\u003eand outdoor illumination.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eTime delayed laser switch\u003cbr data-mce-fragment=\"1\"\u003eFor easy telescope aiming adjustment or any other purposes, it frees both your hands while adjusting your telescope aiming without holding the laser ON button like other green pointers.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eUniversal Mounting\u003cbr data-mce-fragment=\"1\"\u003e1\" diameter fits nicely onto most existing 6x30 finder scope mounts, and 1 standard ¼\"-20 tripod mounting hole ready for any tripod or ball mount.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003ePrecision machined housing\u003cbr data-mce-fragment=\"1\"\u003eWith aerospace grade aluminum and anodized for a rugged and lasting crafted instrument.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eExtra long battery life\u003cbr data-mce-fragment=\"1\"\u003eOperated by three economical AAA batteries, approximately 20 continuous hours.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eConvenient field carrying\u003cbr data-mce-fragment=\"1\"\u003ePackage includes detachable 15\" adjustable strap to hang on your neck or wrist and belt clip pouch.\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications \u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1. Superbright LED flashlight:\u003c\/li\u003e\n\u003cli\u003eWhite LED: total approximate 24,000 mcd output power, GaInN material, full spectrum wavelength.\u003c\/li\u003e\n\u003cli\u003eRed LED: 4,000 mcd, AlGaInP material, 620nm wavelength.\u003c\/li\u003e\n\u003cli\u003e2. Green Laser Specifications\u003c\/li\u003e\n\u003cli\u003eOutput power : Class IIIa, \u0026lt;5mW\u003c\/li\u003e\n\u003cli\u003eWavelength: 532nm\u003c\/li\u003e\n\u003cli\u003eBatteries: Three 1.5V AAA\u003c\/li\u003e\n\u003cli\u003eBattery life: Laser up to 6 hours, Flashlight up to 20 hours\u003c\/li\u003e\n\u003cli\u003eWeight: apx. 5 oz. with batteries\u003c\/li\u003e\n\u003cli\u003eSize: 5.7” length x 1” diameter\u003c\/li\u003e\n\u003cli\u003eOperating temperature \u0026amp; humidity: 20oC ~ 30oC - \u0026lt; 95% relative humidity\u003c\/li\u003e\n\u003cli\u003eStorage temperature \u0026amp; humidity: -10oC ~ 60oC - \u0026lt; 95% relative humidity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp\u003eAstro aimer G3\u003c\/p\u003e\n\u003ch3\u003eWarranty \u0026amp; Manuals\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp\u003e1 year\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Hotech","offers":[{"title":"Default Title","offer_id":44008285995237,"sku":"HOT-HTGL-G3","price":200.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/hotech-astro-aimer-g3-htgl-g3-astronomy-plus_ced136c2-ea95-49b3-ba74-3ada9abb8316.jpg?v=1690489655"},{"product_id":"sharpstar-1-25-collimating-eyepiece-ce","title":"SharpStar 1.25\" Collimating Eyepiece (CE)","description":"\u003ch2\u003eSharpStar 1.25\" Collimating Eyepiece\u003c\/h2\u003e\n\u003cp\u003eThis SharpStar 1.25\" Collimating Eyepiece (CE) is a must-have for any Newtonian or Cassegrain telescope. With a convenient design to easily adjust the secondary mirror, it's perfect for accurate and precise collimation.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIn the Box\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eSharpStar 1.25\" Collimating Eyepiece\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eManuals \u0026amp; Warranty\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eAskar Warranty\u003c\/span\u003e\u003c\/p\u003e","brand":"SharpStar","offers":[{"title":"Default Title","offer_id":44039431356645,"sku":"SS-CE","price":55.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/sharpstar-1-25-collimating-eyepiece-ce-astronomy-plus.webp?v=1690490115"},{"product_id":"svbony-1-25-laser-collimator-f9123a","title":"SVBONY 1.25\" Laser Collimator (F9123A)","description":"\u003ch1\u003eSVBONY 1.25\" Laser Collimator\u003c\/h1\u003e\n\u003cp\u003eThis is a newest Svbony 1.25\" red laser Collimator includes removable 2\" adapter, Designed for accurate collimation of all Newtonian and SCT reflector telescopes. Red laser collimation beam with 7 brightness levels.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e1.Red laser collimation beam with 7 brightness levels\u003cbr\u003e\u003cbr\u003e2.Can fit into 1.25\" focusers or diagonals (with removable 2\" adapter)\u003cbr\u003e\u003cbr\u003e3.Less than 5mW output power, much safer for your eyes\u003cbr\u003e\u003cbr\u003e4.Built with metal material, strong and durable\u003cbr\u003e\u003cbr\u003e5.Item Included CR2032 Lithium cell battery\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/1_4d508310-40c5-48c8-8ec5-ed99e9594206.jpg?v=1760731828\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/2_b3120485-b982-48c1-afa4-4799a4e8b3c4.jpg?v=1760731861\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/3_c01ad5a5-2226-4622-8c00-8633809d3a4c.jpg?v=1760731873\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/4_feb0346e-d86e-4275-bc42-2f4f286dc9c8.jpg?v=1760731884\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/5_bee2b12c-a502-4049-8c87-c8d35d8fff20.jpg?v=1760731898\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6_3b513270-2e94-4d1e-849c-d8d4efc5406e.jpg?v=1760731907\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/7_92adada2-9fdd-4ae1-a61d-f969d3d01ea2.jpg?v=1760731916\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eAttribute\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eF9123A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eName\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLaser Collimator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWavelength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e635–655 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLess than 5 mW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFit Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNewtonian and SCT Reflector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBody Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMetal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSVBONY 1.25\" Laser Collimator\u003c\/li\u003e\n\u003cli\u003e2\" Adapter\u003c\/li\u003e\n\u003cli\u003eCR2032 Lithium cell battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/istronomyplus.com\/pages\/svbony-warranty\" target=\"_blank\"\u003eSvbony 1-Year Warranty \u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Svbony","offers":[{"title":"Default Title","offer_id":44175070986469,"sku":"SVB-F9123A","price":29.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/svbony-1-25-laser-collimator-f9123a-astronomy-plus.webp?v=1715809012"},{"product_id":"baader-laser-collimator-colli-mark-iii-laser","title":"Baader Laser Collimator \"Colli\" - Mark III (LASER)","description":"\u003ch2\u003eBaader Laser Collimator \"Colli\" - Mark III\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLaser-Collimator for easy collimation of your telescope in 1-2 minutes\u003c\/li\u003e\n\u003cli\u003eHigh-quality, impact-resistant and highly accurate laser, with concealed setscrews\u003c\/li\u003e\n\u003cli\u003ePrecision-machined, hard-anodized barrel instead of the less accurate 1¼\" chrome barrel\u003c\/li\u003e\n\u003cli\u003eHandle protector made of silicone rubber facilitates handling with gloves\u003c\/li\u003e\n\u003cli\u003eSuitable for Newton and SC telescopes, instructions included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eBaader Planetarium has added a unique innovation to the laser collimator. The Laser Colli incorporates a viewable etched viewing plate which can be seen through the back of the laser collimator. This permits collimation of SCTs and small diameter closed tube Newtonians, instruments that were difficult or impossible to collimate using a conventional single beam laser collimator.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eEach collimator is individually lathe aligned for accurate collimation. The one-piece die-cast and machined aluminum housing guarantees a stable alignment. The compact size and lightweight make the Laser Colli an indispensable tool that is handy to keep in anyone's eyepiece box (thought we doubt too many will find use as a keychain..).\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications \u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"data-table\" style=\"width: 99.9029%; height: 117.614px;\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"first odd\" style=\"height: 19.6023px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.0187%; height: 19.6023px;\"\u003eMANUFACTURER\u003c\/th\u003e\n\u003ctd class=\"data last\" style=\"width: 42.0466%; height: 19.6023px;\"\u003eBaader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\" style=\"height: 19.6023px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.0187%; height: 19.6023px;\"\u003eSKU (#)\u003c\/th\u003e\n\u003ctd class=\"data last\" style=\"width: 42.0466%; height: 19.6023px;\"\u003e2450343\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\" style=\"height: 19.6023px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.0187%; height: 19.6023px;\"\u003eWEIGHT (NETTO)\u003c\/th\u003e\n\u003ctd class=\"data last\" style=\"width: 42.0466%; height: 19.6023px;\"\u003e0.146\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\" style=\"height: 19.6023px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.0187%; height: 19.6023px;\"\u003eEAN CODE\u003c\/th\u003e\n\u003ctd class=\"data last\" style=\"width: 42.0466%; height: 19.6023px;\"\u003e4047825101358\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\" style=\"height: 19.6023px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.0187%; height: 19.6023px;\"\u003eOUTER CONNECTION (LENS SIDED)\u003c\/th\u003e\n\u003ctd class=\"data last\" style=\"width: 42.0466%; height: 19.6023px;\"\u003eBarrel, 1¼\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"last even\" style=\"height: 19.6023px;\"\u003e\n\u003cth class=\"label\" style=\"width: 55.0187%; height: 19.6023px;\"\u003eCOMPATIBLE TELESCOPES\u003c\/th\u003e\n\u003ctd class=\"data last\" style=\"width: 42.0466%; height: 19.6023px;\"\u003eSchmidt-Cassegrain, Newton\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLaser Collimator \"Colli\" - Mark III\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e2-Year Warranty\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca title=\"Adjustment (Collimation) of Newtonian Telescopes with the help of the LASER-COLLI MARK III\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0267\/1172\/0013\/files\/adjustment_collimation_of_newtonian_telescopes_with_the_help_of_the_laser_colli_mark_iii.pdf?v=1612095411\" target=\"_blank\"\u003eAdjustment (Collimation) of Newtonian Telescopes with the help of the LASER-COLLI MARK III\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca title=\"Testreview Astronomy Technology Today June 2014 - Imaging with the Baader MPCC Mark III and LaserColli - A. Grant\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0267\/1172\/0013\/files\/testreview_astronomy_technology_today_june_2014_imaging_with_the_baader_mpcc_mark_iii_and_lasercolli_a_grant_1.pdf?v=1612095410\" target=\"_blank\"\u003eTestreview Astronomy Technology Today June 2014 - Imaging with the Baader MPCC Mark III and LaserColli - A. Grant\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca title=\"Baader LaserColli Mark III - Group Test Winner\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0267\/1172\/0013\/files\/baader_lasercolli_mark_iii_group_test_winner.pdf?v=1612095410\" target=\"_blank\"\u003eBaader LaserColli Mark III - Group Test Winner\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c!----\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":45872656974053,"sku":"BAA-LASER (Baader #2450343)","price":143.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/1_3326f1f2-6df5-451f-a75c-caec9d8186b5.png?v=1777044954"},{"product_id":"starfield-deluxe-laser-collimator-lc","title":"Starfield Deluxe Laser Collimator (LC)","description":"\u003ch1\u003eStarfield Deluxe Laser Collimator\u003c\/h1\u003e\n\u003cp\u003eThe Starfield Deluxe Newtonian laser collimator has a long 1.25\" barrel and a machined rim for proper alignment.\u003c\/p\u003e\n\u003cp\u003eUsing the laser collimator makes correct collimating of a Newtonian\/Dobsonian telescope simple.. Collimation is completed within a very short time at the observing site in the dark, without any additional accessories being required. Precisely manufactured, it sits snugly in the focuser in the optical axis.\u003c\/p\u003e\n\u003cp\u003eCNC machined, the 45° angled viewing port for easier viewing from the rear of the telescope. The matte projection area allows lateral detection of the reflection and makes main mirror collimation easy - even with large telescopes.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFactory set, using three recessed screws located on this 1.25\" Laser Collimator's body, it is important that these settings are not adjusted or your collimator will not work as intended. Powered via three included LR44 lithium batteries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDeluxe Laser Collimator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty \u0026amp; Manual\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/istronomyplus.com\/pages\/starfield-warranty?_pos=4\u0026amp;_sid=2afe9b2b3\u0026amp;_ss=r\" rel=\"noopener\" target=\"_blank\"\u003eStarfield Limited 1 year Warranty\u003c\/a\u003e\u003c\/p\u003e","brand":"Starfield","offers":[{"title":"Default Title","offer_id":46533019336933,"sku":"SF-LC","price":90.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/2_da48027c-9c39-47ad-bb48-335e84826bbe.png?v=1777045178"},{"product_id":"astronomy-plus-telescope-laser-collimator-for-1-25-inch-or-2-inch-ta14","title":"Astronomy Plus Telescope Laser Collimator for 1.25 Inch or 2 Inch (TA14)","description":"\u003ch1\u003eAstronomy Plus Telescope Laser Collimator for 1.25 Inch or 2 Inch\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp data-start=\"172\" data-end=\"510\"\u003eAchieve precise and effortless collimation of your Newtonian or Dobsonian telescope with this \u003cstrong data-start=\"266\" data-end=\"286\"\u003elaser collimator\u003c\/strong\u003e, designed to fit both \u003cstrong data-start=\"309\" data-end=\"342\"\u003e1.25-inch and 2-inch focusers\u003c\/strong\u003e. Whether you're a seasoned astronomer or just starting out, this tool simplifies the mirror alignment process and ensures optimal image sharpness at any magnification.\u003c\/p\u003e\n\u003cp data-start=\"512\" data-end=\"819\"\u003eThe collimator emits a \u003cstrong data-start=\"535\" data-end=\"573\"\u003ebright, factory-aligned laser beam\u003c\/strong\u003e that reflects off your telescope’s mirrors, allowing you to quickly verify and adjust the optical path. The \u003cstrong data-start=\"682\" data-end=\"702\"\u003edual-size barrel\u003c\/strong\u003e ensures a snug and centered fit in both 1.25\" and 2\" focusers, minimizing misalignment caused by off-axis insertion.\u003c\/p\u003e\n\u003cp data-start=\"821\" data-end=\"1113\"\u003eMade from \u003cstrong data-start=\"831\" data-end=\"852\"\u003eanodized aluminum\u003c\/strong\u003e, it offers a durable, lightweight body built to withstand regular use in the field or observatory. A \u003cstrong data-start=\"954\" data-end=\"969\"\u003etarget grid\u003c\/strong\u003e on the laser face helps visualize return beam accuracy, and \u003cstrong data-start=\"1030\" data-end=\"1057\"\u003ecollimation thumbscrews\u003c\/strong\u003e let you fine-tune the laser’s alignment if ever needed.\u003c\/p\u003e\n\u003cp data-start=\"1115\" data-end=\"1325\"\u003eIdeal for quick checks or full collimation sessions, this laser collimator is the go-to tool for keeping your telescope’s optics in peak condition — so you can spend less time adjusting and more time observing.\u003c\/p\u003e\n\u003cp data-start=\"1115\" data-end=\"1325\"\u003e \u003c\/p\u003e\n\u003ch3 data-start=\"1115\" data-end=\"1325\"\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eAstronomy Plus Telescope Laser Collimator for 1.25 Inch or 2 Inch\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/istronomyplus.com\/products\/astronomy-plus-usb-dew-heater?_pos=5\u0026amp;_sid=79711b5af\u0026amp;_ss=r\" rel=\"noopener\" target=\"_blank\"\u003e1-Year Astronomy Plus Warranty\u003c\/a\u003e\u003c\/p\u003e","brand":"Astronomy Plus","offers":[{"title":"Default Title","offer_id":47031001809125,"sku":"AP-TA14","price":47.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/2_b9bcd63c-6b6f-4acd-91f0-c941847c8edc.webp?v=1751659820"},{"product_id":"astronomy-plus-telescope-laser-collimator-with-coaxial-alignment-ta717","title":"Astronomy Plus High Quality Telescope Laser Collimator with Coaxial alignment (TA717)","description":"\u003ch1 data-start=\"264\" data-end=\"623\"\u003eAstronomy Plus High Quality Telescope Laser Collimator with Coaxial alignment\u003c\/h1\u003e\n\u003cp data-start=\"264\" data-end=\"623\"\u003eThis \u003cstrong data-start=\"269\" data-end=\"299\"\u003eprecision laser collimator\u003c\/strong\u003e is engineered specifically for \u003cstrong data-start=\"331\" data-end=\"365\"\u003eNewtonian reflector telescopes\u003c\/strong\u003e, providing fast and accurate \u003cstrong data-start=\"395\" data-end=\"416\"\u003ecoaxial alignment\u003c\/strong\u003e of the optical axis for sharp, high-contrast views. Compatible with both \u003cstrong data-start=\"490\" data-end=\"523\"\u003e1.25-inch and 2-inch focusers\u003c\/strong\u003e, it’s an essential tool for maintaining peak optical performance in Dobsonian and Newtonian setups.\u003c\/p\u003e\n\u003cp data-start=\"625\" data-end=\"983\"\u003eDesigned for serious observers and astrophotographers alike, this collimator features a \u003cstrong data-start=\"713\" data-end=\"744\"\u003efactory-aligned laser diode\u003c\/strong\u003e that projects a clean, concentric beam down the optical path. With precise \u003cstrong data-start=\"820\" data-end=\"843\"\u003ecoaxial calibration\u003c\/strong\u003e, it allows you to easily assess and correct misalignments in the secondary and primary mirrors — all from the focuser end of the telescope.\u003c\/p\u003e\n\u003cp data-start=\"985\" data-end=\"1293\"\u003eThe rugged, \u003cstrong data-start=\"997\" data-end=\"1027\"\u003eCNC-machined aluminum body\u003c\/strong\u003e ensures durability and long-term alignment stability, while the dual-size barrel provides a snug, centered fit in any standard focuser. A built-in \u003cstrong data-start=\"1175\" data-end=\"1190\"\u003etarget grid\u003c\/strong\u003e at the laser aperture helps verify the return beam, ensuring perfect alignment with minimal guesswork.\u003c\/p\u003e\n\u003cp data-start=\"1295\" data-end=\"1549\"\u003eWhether you’re fine-tuning your setup at home or in the field, this laser collimator is your go-to solution for keeping your \u003cstrong data-start=\"1420\" data-end=\"1461\"\u003eNewtonian optics perfectly collimated\u003c\/strong\u003e — so your telescope always delivers crisp, pinpoint stars and detailed planetary views.\u003c\/p\u003e\n\u003cp data-start=\"1295\" data-end=\"1549\"\u003e \u003c\/p\u003e\n\u003ch3 data-start=\"1295\" data-end=\"1549\"\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eAstronomy Plus Telescope Laser Collimator with Coaxial alignment\u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/istronomyplus.com\/products\/astronomy-plus-usb-dew-heater?_pos=5\u0026amp;_sid=79711b5af\u0026amp;_ss=r\" rel=\"noopener\" target=\"_blank\"\u003e1-Year Astronomy Plus Warranty\u003c\/a\u003e\u003c\/p\u003e","brand":"Astronomy Plus","offers":[{"title":"Default Title","offer_id":47031742267621,"sku":"AP-TA717","price":125.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/3_26d7097c-1d5e-4482-95d1-6c90c23786e2.webp?v=1751660752"},{"product_id":"svbony-sv121-1-25-red-laser-collimator-f9192b","title":"SVBONY SV121 1.25'' Red Laser Collimator (F9192B)","description":"\u003ch1\u003eSVBONY SV121 1.25'' Red Laser Collimator\u003c\/h1\u003e\n\u003ch2\u003ePrecision Calibration Solution\u003c\/h2\u003e\n\u003cp\u003eSolves the problem of inaccurate telescope alignment with upgraded triangular screw structure that firmly locks the optical path, ensuring precise coaxial laser alignment and consistent, reliable calibration accuracy every time.\u003c\/p\u003e\n\u003ch2\u003eEnhanced Alignment Accuracy\u003c\/h2\u003e\n\u003cp\u003eFeatures a 45° aluminum scale plate with laser reflection for exact mirror alignment, delivering rounder, clearer laser spots (Class I laser, 0.1–0.5 mW output) and faster, more efficient telescope collimation, saving time on tedious adjustments.\u003c\/p\u003e\n\u003ch2\u003eUniversal Compatibility \u0026amp; Easy Operation\u003c\/h2\u003e\n\u003cp\u003eFits both refractor and reflector telescopes (especially Newtonian and SCT models) with a 1.25\" interface, and comes with 3-level brightness adjustment to adapt to any lighting condition, enabling convenient alignment in both daylight and darkness.\u003c\/p\u003e\n\u003ch2\u003eStable Connection \u0026amp; Durable Build\u003c\/h2\u003e\n\u003cp\u003e1.25\" standard interface with dual 1.5mm rubber rings and micro-angle end compensates for manufacturing tolerances, eliminates gaps and wobble; all-metal body with sandblasted and anodized finish offers anti-corrosion, wear-resistant durability for long-term use.\u003c\/p\u003e\n\u003ch2\u003eUser-Friendly Professional Design\u003c\/h2\u003e\n\u003cp\u003eCombines precision triangular screw light path locking, 45° scale plate alignment, and simplified brightness adjustment, plus wide compatibility with 1.25\" telescopes (with optional 2\" adapter) to meet the needs of both beginners and seasoned astronomers.\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/1600x837-1_20260429180553_6852_7c8e1f39-0035-4c4b-b93c-ab9818285814_1024x1024.webp?v=1782575413\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/1600x837-2_20260429180553_7051_dbe4052c-51c4-4803-91e0-fdb2bc0ee7b5_1024x1024.webp?v=1782575446\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/1600x837-4_20260429180553_7392_77ce2856-5254-46b5-9f1e-08c590bce9a6_1024x1024.webp?v=1782575466\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/1600x837-3_20260429180553_7407_505c5ef4-7eda-48ad-abc4-d1d04677cafe_1024x1024.webp?v=1782575493\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/1600x837-5_20260429180553_7583_9d105fa2-cac9-4429-9467-f22132113822_1024x1024.webp?v=1782575534\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/1600x837-8_20260429180553_7894_a1891b7c-e9f4-4473-b82e-31486f82d93b_1024x1024.webp?v=1782575557\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/1600x837-11_20260429180553_8198_d21dd14d-6a84-4297-8f0c-c6c5c6d584ca.webp?v=1782575580\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/1600x837-10_20260429180553_8213_67cb2d8f-8894-4cc7-9dcf-513260cfa61a_1024x1024.webp?v=1782575602\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/1600x837-9_20260429180553_8261_bd4ae5c3-6bba-4d4c-ab26-1cf2acaece2b_1024x1024.webp?v=1782575619\"\u003e\u003c\/div\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eLaser Collimator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Compatibility\u003c\/td\u003e\n\u003ctd\u003eRefractor and Reflector Telescopes (including Newtonian and SCT models)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptional Compatibility\u003c\/td\u003e\n\u003ctd\u003e2\" telescopes with optional adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLaser Class\u003c\/td\u003e\n\u003ctd\u003eClass I\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLaser Output Power\u003c\/td\u003e\n\u003ctd\u003e0.1–0.5 mW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrightness Adjustment\u003c\/td\u003e\n\u003ctd\u003e3 Levels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlignment System\u003c\/td\u003e\n\u003ctd\u003ePrecision triangular screw optical path locking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlignment Aid\u003c\/td\u003e\n\u003ctd\u003e45° aluminum scale plate with laser reflection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Design\u003c\/td\u003e\n\u003ctd\u003e1.25\" standard interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStabilization Features\u003c\/td\u003e\n\u003ctd\u003eDual 1.5 mm rubber rings and micro-angle end compensation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction Material\u003c\/td\u003e\n\u003ctd\u003eAll-metal body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Finish\u003c\/td\u003e\n\u003ctd\u003eSandblasted and anodized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrosion Resistance\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWear Resistance\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended Use\u003c\/td\u003e\n\u003ctd\u003eTelescope collimation and optical alignment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSV121 1.25'' Red Laser Collimator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/istronomyplus.com\/pages\/svbony-warranty\" rel=\"noopener\" target=\"_blank\"\u003eSVBONY's 1 year Warranty\u003c\/a\u003e\u003c\/p\u003e","brand":"Svbony","offers":[{"title":"Default Title","offer_id":49519746810085,"sku":"SVB-F9192B","price":42.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/1200--6-_20260429180009_3668.webp?v=1782575819"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/collections\/collimating-laser-astronomy-plus_9503fa28-bfdc-41a1-84e1-51131c9fcf3f.jpg?v=1715807884","url":"https:\/\/istronomyplus.com\/collections\/collimating-laser.oembed","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}