{"title":"Hotech","description":"\u003cp data-start=\"128\" data-end=\"446\"\u003e\u003cstrong data-start=\"128\" data-end=\"169\"\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eHotech\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e specializes in precision laser collimators and alignment tools designed to help astronomers achieve accurate telescope setup. Known for reliability and ease of use, Hotech products improve optical alignment for better performance in both visual observing and astrophotography.\u003c\/p\u003e","products":[{"product_id":"hotech-sca-field-flattener-2-sca-fft58","title":"HoTech SCA Field Flattener 2\" (SCA-FFT58)","description":"\u003ch1\u003eHoTech SCA Field Flattener 2\"\u003c\/h1\u003e\n\u003ch4\u003eHigh Quality Optics Designed for Refractor Telescopes\u003c\/h4\u003e\n\u003cp\u003eThe HoTech SCA Field Flattener 2\" is fully multi-coated on two-element lens allowing the most efficient light transmission without sacrificing the precious collected light from your telescope. It accomodates f5 to f8 refractor telescope. You Image of VEGA is taken with Takahashi TSA-102(F\/8) using a Canon SXi DSLR.\u003cbr\u003eStack of 4 x 5 min exposures without sharpening or noise reduction.\u003cbr\u003e* Note the enlarged star at the right edge of the photo. The star remains circular.[\/caption]\u003c\/p\u003e\n\u003ch4\u003eSCA Brings your Camera to the Closest Optical Axis in the Drawtube\/Visual back for BEST Imaging Result\u003c\/h4\u003e\n\u003cp\u003eTo capture great images from your telescope, it is essential to position your camera firmly in and on the optical axis of your drawtube\/visual back. The SCA T-Adapter center loads your camera in the drawtube\/visual back with a simple threading of a compression ring forcing the built-in rubber rings outward radially, thereby centering the camera in the drawtube\/visual back for optimal installation.\u003c\/p\u003e\n\u003ch4\u003eSCA Eliminates Drawtube\/Visual Back Slop\u003c\/h4\u003e\n\u003cp\u003eAll drawtube\/visual back have manufacturing tolerances. And it requires larger diameter to accept various eyepieces and adapters. When the camera adapter is inserted, the gap between the drawtube\/visual back 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 camera seats firmly in your drawtube\/visual back becoming part of your telescope for a secure and repeatable installation.\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 T-Adapter adapts your camera without using the thumbscrew or the unified compression ring.\u003c\/p\u003e\n\u003ch4\u003eSCA Accepts the Imperfection of a Drawtube\/Visual Back\u003c\/h4\u003e\n\u003cp\u003eSmall imperfection inside the drawtube like dents and scratches, the rubber rings fill the gaps and faithfully centers your camera in the tube. In addition, even if the drawtube is slightly deformed in diameter, egg-shape, the rubber rings in the SCA will compensate the differences and faithfully centers your camera.\u003c\/p\u003e\n\u003ch4\u003eShort SCA Profile Prevents Oscillation\u003c\/h4\u003e\n\u003cp\u003eShort profile design keeps the installed camera stable from low frequency oscillation transferred from the telescope in a windy environment. The non-reducer flattener's back focuse distance, T-Thread shoulder to the CCD chip, requirement is 55mm.\u003c\/p\u003e\n\u003ch4\u003eSCA Damps Vibration\u003c\/h4\u003e\n\u003cp\u003eThe all-around adjustable tightness rubber contact damps unwanted vibrations from the telescope provides you a sturdy attachment on your telescope for a stable image capture.\u003c\/p\u003e\n\u003ch4\u003eThe 2\" Field Flattener Accepts 2\" Filter Thread\u003c\/h4\u003e\n\u003cp\u003eSCA Field Flattener has built-in standard 2”\/48mm (M48-P0.75) filter thread. T-ring thread accepts all kinds of 35mm cameras.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eAdditional Features:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2″ SCA Field Flattener with T-Thread. Superb optics and reliable SCA adapter for f\/5 to f\/8 refractor.\u003c\/li\u003e\n\u003cli\u003eHigh-Quality Engineered Optical Flattener\u003c\/li\u003e\n\u003cli\u003eBuilt-in Self-Centering Adapter\u003c\/li\u003e\n\u003cli\u003eSCA Eliminates Drawtube\/Visualback Slop\u003c\/li\u003e\n\u003cli\u003eSCA Eliminates Unstable Thumbscrew Locking\u003c\/li\u003e\n\u003cli\u003eSCA Accepts the Imperfraction of a Drawtube\/Visualback\u003c\/li\u003e\n\u003cli\u003eSCA Damps Vibration from the Telescope\u003c\/li\u003e\n\u003cli\u003eAccepts 2″ Filter Thread\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specification\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eTelescope Side Connection: 2″ SCA Adapter with M48x0.75 filter thread\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCamera Side Connection: M42x0.75 (T\/T2) Thread- Male\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eImage Circle:  44mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCompatibility: f\/5 to f\/8 refractor telescopes\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBack focus: 55mm\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eField Flattener\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eInstructions\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-Field-Flattener-Manual.pdf?v=1668119278\" target=\"_blank\"\u003eHoTech SCA Field Flattener Manual\u003c\/a\u003e\u003c\/p\u003e","brand":"Hotech","offers":[{"title":"Default Title","offer_id":43125731295461,"sku":"HOT-SCA-FFT58","price":245.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/hotech-sca-field-flattener-2-sca-fft58-astronomy-plus-1.webp?v=1690484336"},{"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-sca-t-adapter-2-sca-ta2","title":"HoTech SCA T-Adapter 2\" (SCA-TA2)","description":"\u003ch2\u003eHoTech SCA T-Adapter 2\"\u003c\/h2\u003e\n\u003cp\u003eThe Self-Centering Adapter (SCA) mechanism provides repeatable and reliable connection between your telescope and the camera. The HoTech SCA T-Adapter 2\" fits any make telescope that uses 2” focuser or visual back. Use your existing T-Ring matches your brand of camera and thread onto the SCA T-Adapter.\u003c\/p\u003e\n\u003ch4\u003eSCA Brings your Camera to the Closest Optical Axis in the Drawtube\/Visual back for BEST Imaging Result\u003c\/h4\u003e\n\u003cp\u003eTo capture great images from your telescope, it is essential to position your camera firmly in and on the optical axis of your drawtube\/visual back. The SCA T-Adapter center loads your camera in the drawtube\/visual back with a simple threading of a compression ring forcing the built-in rubber rings outward radially, thereby centering the camera in the drawtube\/visual back for optimal installation.\u003c\/p\u003e\n\u003ch4\u003eSCA Eliminates Drawtube\/Visual Back Slop\u003c\/h4\u003e\n\u003cp\u003eAll drawtube\/visual back have manufacturing tolerances. And it requires larger diameter to accept various eyepieces and adapters. When the camera adapter is inserted, the gap between the drawtube\/visual back 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 camera seats firmly in your drawtube\/visual back becoming part of your telescope for a secure and repeatable installation.\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 T-Adapter adapts your camera without using the thumbscrew or the unified compression ring.\u003c\/p\u003e\n\u003ch4\u003eSCA Accepts the Imperfection of a Drawtube\/Visual Back\u003c\/h4\u003e\n\u003cp\u003eSmall imperfection inside the drawtube like dents and scratches, the rubber rings fill the gaps and faithfully centers your camera in the tube. In addition, even if the drawtube is slightly deformed in diameter, egg-shape, the rubber rings in the SCA will compensate the differences and faithfully centers your camera.\u003c\/p\u003e\n\u003ch4\u003eShort SCA Profile Prevents Oscillation\u003c\/h4\u003e\n\u003cp\u003eShort profile design keeps the installed camera stable from low frequency oscillation transferred from the telescope in a windy environment. The back focus of a 2\" SCA T-Adapter is 19mm(0.75\") and 1.25\" SCA T-Adapter is 18mm (0.71\") measured from drawtube shoulder to the bottom T-Thread.\u003c\/p\u003e\n\u003ch4\u003eSCA Damps Vibration\u003c\/h4\u003e\n\u003cp\u003eThe all-around adjustable tightness rubber contact damps unwanted vibrations from the telescope provides you a sturdy attachment on your telescope for a stable image capture.\u003c\/p\u003e\n\u003ch4\u003eSCA Accepts Filter Thread\u003c\/h4\u003e\n\u003cp\u003e2” T-Adapter has built-in 2” (48mm) filter thread, and 1.25” T-Adapter has built-in 1.25” filter thread.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hotechusa.com\/v\/vspfiles\/templates\/104\/images\/scatadapterapart008-h200.jpg\" width=\"243\" height=\"172\"\u003e\u003cimg src=\"https:\/\/www.hotechusa.com\/v\/vspfiles\/templates\/104\/images\/scatadaptercomplete011-h200.jpg\" width=\"240\" height=\"171\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.hotechusa.com\/v\/vspfiles\/templates\/104\/images\/scatadaptercomplete011-h200.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eAdditional Features:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eIdeal precision prime focus T-Adapter for your astro imaging\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSCA Provides 360 deg. rubber square rings contact for the most secure and reliable adaption in your focuser\u003c\/li\u003e\n\u003cli\u003eSCA Brings your Camera to the Closest Optical Axis in the Drawtube\/Visual back for BEST Imaging Result\u003c\/li\u003e\n\u003cli\u003eSCA Eliminates Drawtube\/Visual Back Slop\u003c\/li\u003e\n\u003cli\u003eSCA Eliminates unstable locking from thumbscrew or unified compression ring\u003c\/li\u003e\n\u003cli\u003eSCA Accepts the Imperfection of a Drawtube\/Visual Back\u003c\/li\u003e\n\u003cli\u003eShort SCA Profile Prevents Oscillation\u003c\/li\u003e\n\u003cli\u003eSCA Damps Vibration\u003c\/li\u003e\n\u003cli\u003eSCA Accepts Filter Thread device.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specification\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eOptical Length: 0.71″\/18mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eStandard Filter Thread: 1.25” filter thread\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDimension: 1.97″\/50mm dia. x 1.42″\/36mm (L)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWeight: 1.25″ SCA T-Adapter: 1.86 oz.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e2″ SCA T-Adapter\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-T-Adapter-Manual.pdf?v=1668184238\" target=\"_blank\"\u003eHoTech SCA T-Adapter Manual\u003c\/a\u003e\u003c\/p\u003e","brand":"Hotech","offers":[{"title":"Default Title","offer_id":43125731557605,"sku":"HOT-SCA-TA2","price":85.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/hotech-sca-t-adapter-2-sca-ta2-astronomy-plus_73f646bd-a09e-4630-8cc6-75c677cac0e5.png?v=1690484343"},{"product_id":"hotech-sca-t-adapter-1-25-sca-ta125","title":"HoTech SCA T-Adapter 1.25\" (SCA-TA125)","description":"\u003ch2\u003eHoTech SCA T-Adapter 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe Self-Centering Adapter (SCA) mechanism provides repeatable and reliable connection between your telescope and the camera. The HoTech SCA T-Adapter 1.25\" fits any make telescope that uses 1.25” focuser or visual back. Use your existing T-Ring matches your brand of camera and thread onto the SCA T-Adapter.\u003c\/p\u003e\n\u003ch4\u003eSCA Brings your Camera to the Closest Optical Axis in the Drawtube\/Visual back for BEST Imaging Result\u003c\/h4\u003e\n\u003cp\u003eTo capture great images from your telescope, it is essential to position your camera firmly in and on the optical axis of your drawtube\/visual back. The SCA T-Adapter center loads your camera in the drawtube\/visual back with a simple threading of a compression ring forcing the built-in rubber rings outward radially, thereby centering the camera in the drawtube\/visual back for optimal installation.\u003c\/p\u003e\n\u003ch4\u003eSCA Eliminates Drawtube\/Visual Back Slop\u003c\/h4\u003e\n\u003cp\u003eAll drawtube\/visual back have manufacturing tolerances. And it requires larger diameter to accept various eyepieces and adapters. When the camera adapter is inserted, the gap between the drawtube\/visual back 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 camera seats firmly in your drawtube\/visual back becoming part of your telescope for a secure and repeatable installation.\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 T-Adapter adapts your camera without using the thumbscrew or the unified compression ring.\u003c\/p\u003e\n\u003ch4\u003eSCA Accepts the Imperfection of a Drawtube\/Visual Back\u003c\/h4\u003e\n\u003cp\u003eSmall imperfection inside the drawtube like dents and scratches, the rubber rings fill the gaps and faithfully centers your camera in the tube. In addition, even if the drawtube is slightly deformed in diameter, egg-shape, the rubber rings in the SCA will compensate the differences and faithfully centers your camera.\u003c\/p\u003e\n\u003ch4\u003eShort SCA Profile Prevents Oscillation\u003c\/h4\u003e\n\u003cp\u003eShort profile design keeps the installed camera stable from low frequency oscillation transferred from the telescope in a windy environment. The back focus of a 2\" SCA T-Adapter is 19mm(0.75\") and 1.25\" SCA T-Adapter is 18mm (0.71\") measured from drawtube shoulder to the bottom T-Thread.\u003c\/p\u003e\n\u003ch4\u003eSCA Damps Vibration\u003c\/h4\u003e\n\u003cp\u003eThe all-around adjustable tightness rubber contact damps unwanted vibrations from the telescope provides you a sturdy attachment on your telescope for a stable image capture.\u003c\/p\u003e\n\u003ch4\u003eSCA Accepts Filter Thread\u003c\/h4\u003e\n\u003cp\u003e2” T-Adapter has built-in 2” (48mm) filter thread, and 1.25” T-Adapter has built-in 1.25” filter thread.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eAdditional Features:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eIdeal precision prime focus T-Adapter for your astro imaging\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSCA Provides 360 deg. rubber square rings contact for the most secure and reliable adaption in your focuser\u003c\/li\u003e\n\u003cli\u003eSCA Brings your Camera to the Closest Optical Axis in the Drawtube\/Visual back for BEST Imaging Result\u003c\/li\u003e\n\u003cli\u003eSCA Eliminates Drawtube\/Visual Back Slop\u003c\/li\u003e\n\u003cli\u003eSCA Eliminates unstable locking from thumbscrew or unified compression ring\u003c\/li\u003e\n\u003cli\u003eSCA Accepts the Imperfection of a Drawtube\/Visual Back\u003c\/li\u003e\n\u003cli\u003eShort SCA Profile Prevents Oscillation\u003c\/li\u003e\n\u003cli\u003eSCA Damps Vibration\u003c\/li\u003e\n\u003cli\u003eSCA Accepts Filter Thread device.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specification\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eOptical Length: 0.71″\/18mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eStandard Filter Thread: 1.25” filter thread\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDimension: 1.97″\/50mm dia. x 1.42″\/36mm (L)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWeight: 1.25″ SCA T-Adapter: 1.86 oz.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e1.25″ SCA T-Adapter\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-T-Adapter-Manual.pdf?v=1668184238\" target=\"_blank\"\u003eHoTech SCA T-Adapter Manual\u003c\/a\u003e\u003c\/p\u003e","brand":"Hotech","offers":[{"title":"Default Title","offer_id":43125731655909,"sku":"HOT-SCA-TA125","price":71.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/hotech-sca-t-adapter-1-25-sca-ta125-astronomy-plus_16b25379-1d48-4231-8ac7-fd90ad0e65b7.png?v=1690484343"},{"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-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":"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"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/collections\/hotech-astronomy-plus_7502dd0f-4791-437a-bb69-29b7100eeba1.png?v=1715807902","url":"https:\/\/istronomyplus.com\/collections\/hotech.oembed","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}