{"title":"Solar Wedges","description":"","products":[{"product_id":"lunt-1-25-white-light-solar-wedge-ls1-25hw","title":"Lunt White Light Solar Wedge","description":"\u003ch2\u003eLunt White Light Solar Wedge\u003c\/h2\u003e\n\u003cp\u003eFor solar white light imaging and white light visual observing. The Lunt White Light Wedges come with a built in ND3 filter. Notably, this allows perfectly safe imaging or visual observing of the Sun. Alternatively, if you wish to do visual observing we recommend dimming the image for your eyes with a Polarizing Filter. First put one Polarizing Filter on the bottom of your eyepiece. Then adjust the brightness to your comfort by rotating the eyepiece.\u003cbr\u003e\u003cbr\u003eWe offer 2 sizes of White Light Wedges. The 2” version allows for 2” eyepieces and has a 2” barrel for the focuser, and the 1.25” version allows for 1.25” eyepieces and has a 1.25” barrel. The 2″ model performs best on refractors with apertures of 6” or less. The 1.25″ model performs best on refractors up to 4″ in aperture. As long as you can reach focus for imaging with a standard star diagonal on your night time telescope, you will be able to reach focus when imaging with Lunt White Light Solar Wedges.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eView or image the Sun in white light with a Lunt Solar Wedge! This diagonal-type solar filter inserts into the focuser of your nighttime telescope for safe viewing of eclipses, sun spots, and more.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAvailable in either a 2″ or 1.25″ model. 1.25″ is best for refractors 4″ and under, and the 2″ is best for refractors 6″ and under.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe addition of a polarizing filter (sold separately) is recommended when using the solar wedge visually.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli\u003eLunt White Light Solar Wedge (1.25″ or 2″, depending on what you choose)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eND3 Pre-installed Filter\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCarrying Case\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDie Cut Foam with room for accessories\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eLunt 5-Year Warranty\u003c\/p\u003e","brand":"Lunt","offers":[{"title":"1.25\" White Light Solar Wedge","offer_id":43693199130853,"sku":"LS-LS1.25HW","price":385.0,"currency_code":"CAD","in_stock":true},{"title":"2\" White Light Solar Wedge","offer_id":43693199163621,"sku":"LS-LS2HW","price":525.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/lunt-white-light-solar-wedge-astronomy-plus-1.webp?v=1690483736"},{"product_id":"lunt-2-polarizing-filter-for-white-light-wedges-pf-1","title":"Lunt Polarizing Filter for White Light Wedges","description":"\u003ch2\u003eLunt Polarizing Filter for White Light Wedges\u003c\/h2\u003e\n\u003cp\u003eWhen doing visual work with Lunt White Light Wedges, we recommend adding a Lunt Polarizing Filter for more comfortable viewing. We offer both 1.25\" \u0026amp; 2\" Polarizing Filters. Choose the one that matches the barrel size of your White Light Wedge. Simply screw the filter onto the barrel of your eyepiece, and then adjust the brightness of the scene by rotating the top-most filter.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA Polarizing Filter will help control the brightness of the Sun’s image when using a Lunt White Light Wedge visually.\u003c\/li\u003e\n\u003cli\u003eChoose either a 1.25″ or 2″ Polarizing Filter, whichever size matches the barrel of your eyepiece.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli\u003eLunt Polarizing Filter for White Light Wedges - 1.25\" \/ 2\"\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eLunt 5-Year Warranty\u003c\/p\u003e","brand":"Lunt","offers":[{"title":"1.25\" Polarizing Filter","offer_id":43697671667941,"sku":"LS-PF1.25","price":36.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Polarizing Filter","offer_id":43697671700709,"sku":"LS-PF-2","price":45.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/lunt-polarizing-filter-for-white-light-wedges-astronomy-plus-1.webp?v=1690483736"},{"product_id":"lunt-50mm-ha-etalon-filter-ls50fha-new-gen","title":"Lunt 50mm Ha Etalon Filter for LS60Tha \u0026 LS60MT (LS50FHaP) - New Gen Etalon","description":"\u003ch1\u003eLunt 50mm Ha Etalon Filter for LS60Tha \u0026amp; LS60MT - New Gen Etalon\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eLS50FHa solar filter front-mounted non-obstructed hydrogen-alpha filter for use on Lunt ED Telescopes or Double Stacking an existing Lunt Solar System!\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAccommodates LS60THA and LS60MT Telescopes without need for adapter\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eConnect the Lunt LS50FHa to an appropriately sized refractor of your choosing, or use it to double-stack on an existing Lunt 60mm Telescopes for a ~\u0026lt;0.22A band pass!\u003c\/li\u003e\n\u003cli\u003eChoose the appropriate LS50FHa and blocking filter to match your Visual and\/or Imaging requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDSII Requirements: \u003c\/strong\u003eNo adapter is needed to add one LS50FHa to another LS50FHa for double-stacking. The LS50FHa attaches natively to Lunt 60mm Model Telescopes (Lunt LS60THa and Lunt 60mm Universal Telescope)\u003cem\u003e.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe Lunt LS50FHa Solar Filter is a 50 mm aperture (no central obstruction) integrally tuned etalon for use on Lunt ED Refractors.\u003c\/p\u003e\n\u003cp\u003eLunt Solar will be introducing a larger selection of ED Telescopes that will meet your Solar needs for Daytime observing and meet the additional requirements of Nighttime observing.  In this way you can use one scope for day and night.\u003c\/p\u003e\n\u003cp\u003eLunt Solar also offer a full line of dedicated Solar Telescopes.\u003c\/p\u003e\n\u003cp\u003eYou MUST use a matching Lunt Blocking Filter with a Lunt Solar front mounted Filter (this is a safety requirement). For this reason choose the blocking filter that best suits your requirements for the system. It’s important to realize that a larger blocking filter is recommended for imaging due to the need for in-focus of the camera.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eB600 – Visual Use\u003c\/li\u003e\n\u003cli\u003eB1200 – Imaging and Visual Use\u003c\/li\u003e\n\u003cli\u003eB1200 – Visual Use\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/luntsolarsystems.com\/product\/lunt-blocking-filters-b600-b1200-b1800\/\"\u003eB1800\u003c\/a\u003e – Imaging and Visual Use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eRemoving the LS50FHa Solar Filter for night use\u003c\/h4\u003e\n\u003cp\u003eThe Lunt ED refractors are designed to retrofitted with the LS50FHa Hydrogen-alpha Filter.  In this way you can use the ED telescopes during the day. Notably, they are easily removable so that the Lunt ED scope can continue to be used for night observing.\u003c\/p\u003e\n\u003cp\u003eBecause the LS50FHa Solar Filter has an estimated bandpass of \u0026lt;0.4 Angstrom it is capable of providing high contrast views of both surface and edge detail. Significantly, adding an additional etalon system (double-stacking) will reduce the bandpass to ~\u0026lt;0.22. Allowing for higher resolution viewing and\/or imaging. In addition, the part number LS50FHa is offered for this purpose or for those who already have a Lunt blocking filter.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLS50FHa solar filter front-mounted non-obstructed hydrogen-alpha filter for use on Lunt ED Telescopes or Double Stacking an existing Lunt Solar System!\u003c\/li\u003e\n\u003cli\u003eAccommodates LS60THA and LS60MT Telescopes without need for adapter\u003c\/li\u003e\n\u003cli\u003eConnect the Lunt LS50FHa to an appropriately sized refractor of your choosing, or use it to double-stack on an existing Lunt 60mm Telescopes for a ~\u0026lt;0.22A band pass!\u003c\/li\u003e\n\u003cli\u003eChoose the appropriate LS50FHa and blocking filter to match your Visual and\/or Imaging requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptical Aperture: 50 mm\u003c\/li\u003e\n\u003cli\u003eEtalon: Internal \u0026lt;0.4 Angstrom\u003c\/li\u003e\n\u003cli\u003eTuning: Tilt\u003c\/li\u003e\n\u003cli\u003eFocal Length: ED80 (f\/7) ED102 (f\/7)\u003c\/li\u003e\n\u003cli\u003eFilter Storage: Aluminum finished hard case with fitted foam\u003c\/li\u003e\n\u003cli\u003eFilter Weight: 2 lb (~1kg)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eLunt 50mm Ha Etalon Filter\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003ch3\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp\u003eLunt 5-Year Warranty\u003c\/p\u003e","brand":"Lunt","offers":[{"title":"Default Title","offer_id":43125690007781,"sku":"LS-LS50FHaP","price":1603.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/lunt-50mm-ha-etalon-filter-ls50fha-astronomy-plus-1.webp?v=1690483749"},{"product_id":"baader-2-cool-ceramic-safety-herschel-prism-visual-photographic","title":"Baader 2\" Cool-Ceramic Safety Herschel Prism Mark II – (Visual \/ Photo)","description":"\u003ch2\u003eBaader 2\" Cool-Ceramic Safety Herschel Prism Mark II (Visual \/ Photographic)\u003c\/h2\u003e\n\u003cdiv class=\"product-collateral toggle-content tabs\"\u003e\n\u003cdl class=\"collateral-tabs\" id=\"collateral-tabs\"\u003e\n\u003cdd class=\"tab-container current\"\u003e\n\u003cdiv class=\"tab-content\"\u003e\n\u003cdiv class=\"std\"\u003e\n\u003ch4\u003e\u003c\/h4\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"box-collateral box-up-sell\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cem\u003e2\" wedge prism according to Herschel - one-sided Phantom Group\u003csup\u003e®\u003c\/sup\u003e anti-reflective coating, with ceramic solar finder and 2\" ClickLock\u003csup\u003e®\u003c\/sup\u003e eyepiece holder\u003c\/em\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003eIntegrated rotation mechanism for polarising filters – the best method for brightness adjustment in visual solar observation and solar photography in white light\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/em\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003eStepless brightness adjustment is made possible in combination with the optional \u003ca href=\"https:\/\/istronomyplus.com\/products\/baader-single-polarizing-filter?_pos=1\u0026amp;_psq=single%20pola\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" data-mce-href=\"https:\/\/istronomyplus.com\/products\/baader-single-polarizing-filter?_pos=1\u0026amp;_psq=single%20pola\u0026amp;_ss=e\u0026amp;_v=1.0\"\u003eBaader Single Polarizing Filter 2\"\u003c\/a\u003e  and the included Neutral Density Filter. The polarizing filters are not included in the scope of delivery\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/em\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003eIncluding our \u003ca href=\"https:\/\/istronomyplus.com\/products\/baader-solar-continuum-filter-540nm?_pos=2\u0026amp;_psq=baader+solar\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" data-mce-href=\"https:\/\/istronomyplus.com\/products\/baader-solar-continuum-filter-540nm?_pos=2\u0026amp;_psq=baader+solar\u0026amp;_ss=e\u0026amp;_v=1.0\"\u003eBaader 7.5 nm Solar Continuum Filter 2\" (540nm)\u003c\/a\u003e for an uncompromisingly sharp solar image\u003c\/em\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003eS58 dovetail and Safety Kerfs on the 2\" nose-piece, New 3-point adjustment system preset in the factory.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eThere is no better way for uncompromising Solar Observation \/ Solar Photography in white light\u003c\/h4\u003e\n\u003cp\u003eA Herschel wedge allows the use of highest magnifications on the refractor without loss of quality.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Baader 2\" Cool-Ceramic Saftey Herschel prism features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003ean\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003eintegrated rotation mechanism for polarising filters\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– the best method for brightness adjustment in visual solar observation and solar photography in white light. This filter rotation mechanism allows filters to be rotated steplessly in the optical path. Since the Herschel prism emits single polarised light,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ea stepless brightness adjustment\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis made possible in combination with the optional\u003cspan\u003e \u003c\/span\u003eBaader Single Polarizing Filter 2\"\u003cspan\u003e \u003c\/span\u003eand the included Neutral Density Filter. All necessary filters always remain in the Herschel prism, even when changing eyepieces!\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eincludes the\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/istronomyplus.com\/products\/baader-solar-continuum-filter-540nm?_pos=2\u0026amp;_psq=baader+solar\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" data-mce-href=\"https:\/\/istronomyplus.com\/products\/baader-solar-continuum-filter-540nm?_pos=2\u0026amp;_psq=baader+solar\u0026amp;_ss=e\u0026amp;_v=1.0\"\u003eBaader 7.5 nm Solar Continuum Filter 2\" (540nm)\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ewith 7.5 nm half-band-width\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor an uncompromisingly sharp solar image.\u003cstrong\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003eHerschel prisms must always be operated with additional light attenuation filters. Every Herschel wedge needs additional neutral density filters since the reflected energy of the first surface prism (4.6%) still is a factor of 1000 too large for the human eye. All Baader Solar Diagonals are delivered with a pre-mounted ND 3.0 Baader precision 2”\" light reduction filter and Solar Continuum Filter. The photographic version includes even more ND filters for selective light attenuation when using cameras and high magnifications.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS58 dovetail\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e– as on the Steeltrack focuser – for the use of the following three adapters\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eBDS 2\"\u003cspan\u003e \u003c\/span\u003eDiamond Steeltrack® S58 to M48 BDS-Adapter\u003c\/li\u003e\n\u003cli\u003eBDS 2\"\u003cspan\u003e \u003c\/span\u003eDiamond Steeltrack® S58 to M68i BDS-Adapter\u003cspan\u003e \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eBDS 2\"\u003cspan\u003e \u003c\/span\u003eDiamond Steeltrack® S58 to T-2 BDS-Adapter\u003cspan\u003e \u003c\/span\u003e\u003cbr\u003ee.g. for short adaptation of cameras\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ethe new 3-point adjustment system of the wedge,\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003epreset in the factory\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Kerfs\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eon the 2\" nose-piece\u003c\/li\u003e\n\u003cli\u003eSturdy transport\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ecase made of ABS plastic\u003c\/strong\u003e, air sealed IP67\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAvailable in two versions:\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cul\u003e\n\u003cli\u003eBaader Safety CoolCeramic Herschel Prism 2\" Visual\u003cspan\u003e \u003c\/span\u003ewith\u003cspan\u003e \u003c\/span\u003eBaader Neutral Density Filter 2\" (ND 3.0, T=0.1%)\u003cspan\u003e \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eBaader Safety CoolCeramic Herschel Prism 2\" Photographic\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003ewith\u003cspan\u003e \u003c\/span\u003eBaader Neutral Density Filter, ND 3.0\/1.8\/0.9\/0.6.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eThe advantages of the Safety Cool-Ceramic Herschel prism\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSpace-Technology: \u003c\/strong\u003eA multiple staggered light trap made of heat protection sheets and heat-absorbing special ceramics as the end of the light trap - similar to heat tiles on the space shuttle - absorbs the radiant heat without heating the surroundings too much. The prism also remains temperature-stable for a long time.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnclosed housing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eno risk of glare or fire from the emitted sunlight, observation is possible without danger\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSolar Finder:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eThe ceramic plate also acts as a screen for the sunlight beam. Aiming the telescope at the sun becomes very easy.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eClickLock“ Clamp:\u003c\/strong\u003e with a 15° rotation you clamp every eyepiece securely - even in winter with heavy gloves.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShort overall length:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eshortening the overall length by 30 mm for the use of DSLR or Binoviewers with optional T-2 adapter\u003cspan\u003e \u003c\/span\u003eDiamond Steeltrack® S58 to T-2 BDS-Adapter\u003cspan\u003e \u003c\/span\u003eor \u003cspan\u003e \u003c\/span\u003eDiamond Steeltrack® S58 to M48 BDS-Adapter\u003cspan\u003e \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Holder:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOn the rotatable filter holder, all necessary filters are firmly installed in the housing - no danger when changing eyepieces!\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBrightness adjustment for photography:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTo let enough light through for photography at high magnifications, the pre-installed ND3 filter can be replaced by weaker filters (sold separately, or included with the photo version).\u003cspan\u003e \u003c\/span\u003eBaader Safety CoolCeramic Herschel Prism 2\" Photographic\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Herschel wedge is based on the principle of using only a small part (4.6%) of the incident light for the actual observation. These 4.6% are reduced again by a factor of 1000 to a harmless level by the ND 3.0 neutral density filter, which is installed as standard in both versions. The unequally larger, high-energy part of the light falls through the housing and forms a focal point in the air outside. Even far behind this focal point, this light concentration would still be irritatingly bright and dangerous if an inexperienced observer were to accidentally (or wantonly) look into the output beam. Therefore, our Herschel prisms have been using light traps for years to eliminate this risk. With the closed light trap with Cool-Ceramic protection plate, observing the sun with a Herschel prism is possible without danger for private persons as well as for public institutions and schools.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eYou do not need an additional objective solar filter in front of your refractor telescope to safely observe the sun with the Baader Cool-Ceramic Herschel prism and the built-in ND 3.0 filter!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePlease note: Herschel prisms must not be used on Petzval systems or other telescopes that have glass in the optical path near the focal point. Multi-lens systems do not pose a problem as long as the optics are at the front of the telescope. As long as the light has not been focused (i.e., the energy has not yet concentrated at the focal point), the heat input is no greater than solar energy on a white surface in summer. Ergo, it is a long held and just as often disproved misconception that refractor optics degrade or get too hot. All refractor optics whether oil or air gap, which are distributed by the company Baader Planetarium, are absolutely able to make solar observations by means of Herschel prism. The oils used are all UV resistant. (However, we can only speak here for the products of the brands we know - if necessary, refer to the manual of your telescope to see if it is suitable for solar projection).\u003c\/p\u003e\n\u003cp\u003eEspecially interesting is solar observation with a large aperture telescope like a \u003cspan\u003e \u003c\/span\u003eTriband-SCT - Schmidt-Cassegrain-based Multi-Purpose-Telescope, for Sun and Deep Sky\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"inlinesku\"\u003e(various versions available)\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e - the Schmidt corrector equipped with an energy protection filter allows to use telescopes up to 11\" aperture also for solar observation with a Herschel prism!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eTechnical details:\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eTelescope side connection options (included as standard):\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cp\u003e2\" (50.8 mm) nosepiece with safety groove and M48 filter thread\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDovetail ring (ring groove) S58 x 3.7mm, e.g.  for connection to Zeiss M68 and other Baader connection standards with optional adapters\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eEyepiece side connection options (included as standard):\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cp\u003e2\" (50.8 mm) Clicklock clamp with brass clamping ring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDovetail ring (ring groove) S58 x 3.7mm, as on SteelTrack focuser\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eHousing:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eMetal; milled and matte black anodized; pearl white textured finish\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eTechnical Specifications \u003cbr\u003e\n\u003c\/h3\u003e\n\u003ch2\u003ePhotographic\u003c\/h2\u003e\n\u003ctable class=\"data-table\" id=\"product-attribute-specs-table\" data-mce-fragment=\"1\"\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eMANUFACTURER\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eBaader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eSKU (#)\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003e2956510P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eEAN CODE\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003e4047825051974\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eOPTICAL DESIGN\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eHerschel Prism\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eINNER CONNECTION (LENS SIDED)\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eThread, M48, 2\" (50,8mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eOUTER CONNECTION (LENS SIDED)\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eBarrel, Dovetail ring, S58, 2\" (50,8mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eINNER CONNECTION (EYEPIECE\/-CAMERA-SIDED)\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eClamp, 2\" (50,8mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eOUTER CONNECTION (EYEPIECE\/-CAMERA-SIDED)\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eThread, Dovetail ring, S58, 2\" (50,8mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eREFLECTION SURFACE\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eFirst surface reflection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eAR-COATING\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003ePhantom Coating® Group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eIMAGE ORIENTATION\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eErect image, Mirror inverted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eCLAMPING SYSTEM\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eClickLock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eSOLAR WAVELENGTH\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eWhitelight (integral light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003ch2\u003eVisual\u003c\/h2\u003e\n\u003ctable class=\"data-table\" id=\"product-attribute-specs-table\" data-mce-fragment=\"1\"\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eMANUFACTURER\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eBaader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eSKU (#)\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003e2956510V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eEAN CODE\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003e4047825051967\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eOPTICAL DESIGN\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eHerschel Prism\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eINNER CONNECTION (LENS SIDED)\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eThread, M48, 2\" (50,8mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eOUTER CONNECTION (LENS SIDED)\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eBarrel, Dovetail ring, S58, 2\" (50,8mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eINNER CONNECTION (EYEPIECE\/-CAMERA-SIDED)\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eClamp, 2\" (50,8mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eOUTER CONNECTION (EYEPIECE\/-CAMERA-SIDED)\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eThread, Dovetail ring, S58, 2\" (50,8mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eREFLECTION SURFACE\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eFirst surface reflection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eAR-COATING\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003ePhantom Coating® Group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eIMAGE ORIENTATION\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eErect image, Mirror inverted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eCLAMPING SYSTEM\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eClickLock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003cth class=\"label\" data-mce-fragment=\"1\"\u003eSOLAR WAVELENGTH\u003c\/th\u003e\n\u003ctd class=\"data\" data-mce-fragment=\"1\"\u003eWhitelight (integral light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cbr\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cstrong\u003eVisual:\u003c\/strong\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eBaader Planetarium 2\" Baader Safety Cool Herschel Prism, Version \"V\"\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eContinuum Filter\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePre-installed ND = 3.0 Filter\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eProtective Case\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePhotographic:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBaader Planetarium 2\" Baader Safety Cool Herschel Prism Version \"P\"\u003c\/li\u003e\n\u003cli\u003eInstalled Clicklock\u003c\/li\u003e\n\u003cli\u003eProtective Case\u003c\/li\u003e\n\u003cli\u003eBaader 7.5 nm Solar Continuum Filter 2\" (540nm)\u003c\/li\u003e\n\u003cli\u003eBaader Neutral Density Filter 2\" (ND 3.0, T=0.1%)\u003c\/li\u003e\n\u003cli\u003eBaader Neutral Density Filter 2\" (ND 1.8, T=1.5%)\u003c\/li\u003e\n\u003cli\u003eBaader Neutral Density Filter 2\" (ND 0.9, T=12.5%)\u003cspan\u003e \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eBaader Neutral Density Filter 2\" (ND 0.6, T=25%)\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"inlinesku\"\u003e)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eBaader 2-Year Warranty\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0267\/1172\/0013\/files\/instruction_manual_and_application_examples.pdf?v=1683143176\" data-mce-href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0267\/1172\/0013\/files\/instruction_manual_and_application_examples.pdf?v=1683143176\" target=\"_blank\"\u003e\u003cb\u003eInstruction Manual and Application Examples\u003c\/b\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3 class=\"entry-title\"\u003e\u003cbr\u003e\u003c\/h3\u003e","brand":"Baader Planetarium","offers":[{"title":"Visual","offer_id":43535358329061,"sku":"BAA-HERSCH-VII (Baader #2956510V)","price":838.0,"currency_code":"CAD","in_stock":true},{"title":"Photographic","offer_id":43535358361829,"sku":"BAA-HERSCH-PII (Baader #2956510P)","price":940.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/baader-2-cool-ceramic-safety-herschel-prism-mark-ii-visual-photo-astronomy-plus-1.webp?v=1690486998"},{"product_id":"starfield-2-herschel-wedge-for-solar-observation","title":"Starfield 2\" Herschel Wedge for Solar Observation (SOL-Wedge)","description":"\u003ch1\u003eStarfield 2\" Herschel Wedge for Solar Observation\u003c\/h1\u003e\n\u003cp\u003e\u003cspan\u003eThe Starfield Optics 2\" Herschel solar wedge transforms how you can observe the sun's surface including sun spots and surface detail\u003cimg src=\"https:\/\/img1.wsimg.com\/isteam\/ip\/d66e8571-427a-4cd6-ac4e-4734ad6fa841\/wedge%20black.png\/:\/cr=t:0%25,l:21.88%25,w:56.24%25,h:100%25\/rs=w:400,h:400,cg:true\" alt='2\" Solar wedge for safe observation of the sun' style=\"display: block; margin-left: auto; margin-right: auto;\" data-mce-fragment=\"1\" width=\"269\" height=\"269\" data-mce-src=\"https:\/\/img1.wsimg.com\/isteam\/ip\/d66e8571-427a-4cd6-ac4e-4734ad6fa841\/wedge%20black.png\/:\/cr=t:0%25,l:21.88%25,w:56.24%25,h:100%25\/rs=w:400,h:400,cg:true\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe solar wedge easily attaches to your refractor telescope, replacing the standard 2\" mirror or prism diagonal. The solar wedge is imaging-ready since you can fine tune the image brightness without needing to remove your camera.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSolar wedges, compared to traditional film solar filters, are known to give you a higher-contrast image because it removes all reflections between the filter and telescope lens. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe sun can be safely observed with the Starfield Optics Herschel wedge. Brightness can be adjusted by twisting of the 2\" polarizing filter by rotating the 2\" eyepiece holder.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eGet ready to see sun spots and solar surface granulation like never before!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cdiv class=\"x-el c1-1 c1-2 c1-18 c1-19 c1-1a c1-1b c1-1c c1-8r c1-8s c1-8t c1-8u c1-8v c1-8w c1-8x c1-8y c1-8z c1-90 c1-91 c1-92 c1-93 c1-94 c1-95 c1-96 c1-97 c1-98 c1-99 c1-9a c1-9b c1-9c c1-9d c1-9e c1-9f c1-9g c1-9h c1-9i c1-86 c1-b c1-4w c1-c c1-26 c1-d c1-e c1-f c1-g x-rt\" data-typography=\"BodyAlpha\" data-aid=\"CONTENT_DESCRIPTION1_RENDERED\" data-ux=\"ContentText\" alignment=\"left\"\u003e\n\u003cul\u003e\n\u003cli\u003eVisual and imaging use\u003c\/li\u003e\n\u003cli\u003eBuilt in ND3 filter\u003c\/li\u003e\n\u003cli\u003ePolarizing filter provides a wide brightness adjustment range\u003c\/li\u003e\n\u003cli\u003e115mm optical back length allows for use with most refractors\u003c\/li\u003e\n\u003cli\u003eAnti-reflection coated prism\u003c\/li\u003e\n\u003cli\u003e46mm clear aperture\u003c\/li\u003e\n\u003cli\u003e2\" twist lock ring allows for fast accessory changes\u003c\/li\u003e\n\u003cli\u003eincludes 2\"-1.25\" adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCase\u003c\/li\u003e\n\u003cli\u003eHerschel Wedge\u003c\/li\u003e\n\u003cli\u003e1.25\" Adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/istronomyplus.com\/pages\/starfield-warranty\" target=\"_blank\"\u003e\u003cspan\u003eStarfield Branded Telescope Limited 1-Year Warranty, Must Register within 60 Days of Purchase\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Starfield","offers":[{"title":"Default Title","offer_id":44019326877925,"sku":"SF-SOL-Wedge","price":489.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/starfield-2-herschel-wedge-for-solar-observation-sol-wedge-astronomy-plus-1.webp?v=1690489926"},{"product_id":"starfield-optics-1-25-herschel-solar-wedge-sol-wedge-1-25","title":"Starfield 1.25\" Herschel Solar Wedge (Sol-Wedge-1.25)","description":"\u003ch1\u003eStarfield 1.25\" Herschel Solar Wedge\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eSafe for both solar observation and photography\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSafe for both solar observation and photography The Starfield Optic s 1.25\" Herschel Solar Wedge transforms how you can observe the Sun including sunspots! The solar wedge easily attaches to your refractor telescope, replacing the prism or diagonal . This solar wedge is imaging-ready since you can fine tune the image brightness without needing to remove your camera.\u003c\/p\u003e\n\u003cp\u003eSolar wedges, compared to traditional film solar filters, are known to give you a higher-contrast image because it removes all reflections between the filter and telescope lens. Key Features: Visual and imaging use Built in adjustable CPL filter Anti-reflection coated prism 26.5mm clear aperture. The sun can be safely observed with the M42 Threads for attaching camera Starfield Optics Herschel Solar Wedge. With the built in Neutral Density Filter, observing the Sun is comfortable on your eye. Get ready to see sunspots and solar surface granulation like never before!\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCase\u003c\/li\u003e\n\u003cli\u003eHerschel Wedge\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/istronomyplus.com\/pages\/starfield-warranty\" target=\"_blank\"\u003e\u003cspan\u003eStarfield Branded Telescope Limited 1-Year Warranty\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Starfield","offers":[{"title":"Default Title","offer_id":44578886844645,"sku":"SF-Sol-Wedge-1.25","price":349.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/starfield-optics-1-25-herschel-solar-wedge-sol-wedge-1-25-astronomy-plus-1.png?v=1715808293"},{"product_id":"apm-ceramic-safety-2-herschel-prism-used-hp2-u","title":"APM Ceramic Safety 2\" Herschel Prism - USED (HP2-U)","description":"\u003ch1\u003eAPM Ceramic Safety 2\" Herschel Prism - USED\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh quality surfaces for best contrast values\u003c\/li\u003e\n\u003cli\u003eCompletely closed body with light catch\u003c\/li\u003e\n\u003cli\u003ePre-installed ND3 filter and integrated polarizer\u003c\/li\u003e\n\u003cli\u003eSetup of the polarizer by turning the eyepiece sleeve\u003c\/li\u003e\n\u003cli\u003eAPM FastLock eyepiece sleeve\u003c\/li\u003e\n\u003cli\u003eDelivery with solid Aluminum case\u003c\/li\u003e\n\u003cli\u003eBackfocus 115 mm\u003c\/li\u003e\n\u003cli\u003eWeight 830 grams\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHerschel wedges (Solar prisms) are made for the solar observation with refractors. Appr.  95% of the incoming solar light will be blocked. With a variable polarizing filter or strong neutral density filters, the sunlight can be reduced to an usable amount. Unlike objective solar filters, the filtering happens close to the eyepiece or camera. Normally the resulting contrast and sharpness of the image will be qualitative better with a Herschel wedge.\u003c\/p\u003e\n\u003cp\u003eThe full solar energy enters the telescope and the filtering happens close to the focal plane, so we only recommend refractors for the work with a Herschel wedge. And important, the refractor shouldn't have a rear corrector lens. The optical elements would heated up through the concentrated energy and could be damaged. Also filters are only allowed at the eyepiece side of the Herschel wedge and not at the front side.\u003c\/p\u003e\n\u003cp\u003eAdditional to a better image quality, the Herschel wedge offers more light. So you can use special contrast filters, like the Baader Solar Continuum. With filters like these you can increase the contrast of the sun image. Of course 5% are too much for visual solar observation. So, you need an additional filter for light reduction.  A Neutral Density 3 Filter is screwed directly in the prism body. Because the Herschel wedge produces polarized light, you use the internal polarizing filter for additional light reduction. Now you can rotate the eyepiece sleeve and so reduce the light level.\u003c\/p\u003e\n\u003cp\u003eThis Herschel wedge comes with integrated ND3 density filter and Polarizing filter.\u003c\/p\u003e\n\u003cp\u003eThe APM Herschel wegde offers a really good performance for a very reasonable price.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications \u003c\/h3\u003e\n\u003ctable class=\"data-table\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"odd\"\u003e\n\u003ctd class=\"spec-name\"\u003eTelescope side connection\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\"\u003e\n\u003ctd class=\"spec-name\"\u003eEypiece side connection\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e2\" (Camera side)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\"\u003e\n\u003ctd class=\"spec-name\"\u003eClear aperature\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e46mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAPM Ceramic Safety 2\" Herschel Prism - USED\u003c\/li\u003e\n\u003cli\u003eCase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"APM","offers":[{"title":"Default Title","offer_id":48994375991525,"sku":"APM-HP2-BOND","price":400.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/20260509_102921_1.jpg?v=1778345746"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/collections\/solar-wedges-astronomy-plus.jpg?v=1677340934","url":"https:\/\/istronomyplus.com\/collections\/solar-wedges.oembed","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}