{"title":"William Optics","description":"\u003cp\u003e\u003cspan\u003eManufacturer of refractor telescopes, binoculars, digital camera adapter lenses for telescopes, eyepieces, diagonals and other accessories. Based in Taiwan and founded by William Yang.\u003c\/span\u003e\u003c\/p\u003e","products":[{"product_id":"dura-bright-carbon-fiber-dielectric-diagonal-2-d-dig2d-c-db-disabled","title":"William Optics Dura-Bright Carbon Fiber Dielectric Diagonal - 2\"  - D-DIG2D-C-DB","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the William Optics Dura-Bright Carbon Fiber Dielectric Diagonal - 2\"...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eIf what you are looking for is the highest achievable brightness, contrast and sharpness during critical observations with high-end instruments, the \u003cb\u003eWilliam Optics Dura-Bright Carbon Fiber Dielectric Diagonal - 2\"\u003c\/b\u003e is an excellent choice. This dielectric diagonal features 100% real carbon fiber side plates that add that touch of class your scope deserves.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eWilliam Optics Dura-Bright Carbon Fiber Dielectric Diagonal - 2\" Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDielectric coating allows 99% reflectivity.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e10mm thick substrate flat for optimal image stability.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003ePolished to 1\/10th wave accuracy.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eAccurate design guarantees constant alignment. No further alignment needed.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e2\" to 1.25\" eyepiece adapter included.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eLock screw for eyepiece\/adapter.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eBig, knurled thumbscrews easy to turn even with gloves on.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003ePatented, elegant design.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eHigh-quality machining out of the best aluminum.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eInternal antireflection for highest contrast.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompression rings (both on diagonal and adapter) to prevent barrel marring.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eInternal safety stop prevents 2\" barrels from hitting the mirror.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eWilliam Optics Dura-Bright Carbon Fiber Dielectric Diagonal - 2\" Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eUltra High Dielectric 99% reflectivity.\u003c\/p\u003e\n\u003cp\u003ePrecision 1\/10 lambda surface with 15mm thickness mirror for best quality.\u003c\/p\u003e\n\u003cp\u003e2\"- 1.25\" adapter with brass clamping ring,includes 2 thumb screws at 120 degree apart for safe secure lock.\u003c\/p\u003e\n\u003cp\u003eInside diameter (48mm): threaded to fit a variety of filters.\u003c\/p\u003e\n\u003cp\u003eWeight : 535g\u003c\/p\u003e\n\u003cp\u003eWilliam Optics Product Number: D-DIG2D-C-DB\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ci\u003eLimited quantities available\u003c\/i\u003e","brand":"William Optics","offers":[{"title":"Default","offer_id":10552412673,"sku":"WIL-D-DIG2D-C-DB","price":261.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/img_6742.png?v=1776459106"},{"product_id":"90-mm-mounting-rings-m-m80r-b","title":"William Optics 90mm Mounting Rings - M-M80R-B","description":"\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eThese 90 mm, felt-lined mounting rings are made out of solid aluminum, anodized, and will fit most 90 mm OD tubes, and all William Optics 80 and 90mm telescopes (Megrez 80 \u0026amp; 90 all versions, ZenithStar 80) and clone 80mm telescopes.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eA worthwhile investment if you want the best out of your mount.\u003c\/span\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":12157566145,"sku":"WIL-M-M80R-B","price":246.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/M-M80R-B_A04_nEO_IMG-1000x1000.jpeg?v=1776459152"},{"product_id":"binoviewers-2x-20-mm-1-25-w-a-66-deg-eyepieces-1-6x-barlow-nosepiece-e-bino-p","title":"William Optics Binoviewer with 1.6X Barlow Nosepiece \u0026 20 mm Eyepieces - E-BINO-P","description":"\u003cmeta charset=\"utf-8\"\u003e\u003cbr\u003e\u003cspan\u003eToday you can enjoy the benefits of BaK4 quality binoviewers in your refractor, SCT or Newtonian scope with a convenient PACKAGE including:\u003c\/span\u003e\n\u003cp\u003e-1.25” Binoviewer with anti-marring compression rings \u003cbr\u003e-2x William Optics 20 mm WA 66 deg. eyepieces included (available optionally too) \u003cbr\u003e-Barlow nosepiece (1.6x) for easier focusing with most telescopes! It can be mounted on other eyepieces too!\u003cbr\u003e-Exclusive gift box.\u003c\/p\u003e\n\u003cp\u003eThe price is very inviting, but the experience of three dimensional two-eyed viewing is even better!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWO Fit \u0026amp; Finish\u003c\/strong\u003e\u003cbr\u003e• White powder painting.\u003cbr\u003e• Large chromed thumbscrews and anodized aluminum.\u003cbr\u003e• Very useful optional 2x Barlow\/Correctors and extenders are available separately for telescopes with special back-focus issues.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cb\u003eBAK4 Prisms\u003c\/b\u003e\u003c\/strong\u003e \u003cbr\u003e• High-quality BaK4 prisms with 20mm clear aperture for maximum brightness and contrast with any telescope. \u003cbr\u003e• Fully Multi Coated. \u003cbr\u003e• Anti-marring brass compression rings for your eyepieces. \u003cbr\u003e• Individual eyepiece focus adjustment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose the Best! Best price! \u003c\/strong\u003e\u003cbr\u003e• The best quality-prism 1.25\" Binoviewers package out there!\u003cbr\u003e• \u003cb\u003eSets of 2 eyepieces for binoviewing available at discount prices\u003c\/b\u003e.\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":12157715521,"sku":"WIL-E-BINO-P","price":509.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/william-optics-125-binoviewer-with-eyepieces-de2.jpeg?v=1776459213"},{"product_id":"super-wide-angle-72-1-25-high-quality-eyepiece-20mm-e-swa20","title":"William Optics 20 mm SWA 72-Degree 1.25\" Eyepiece - E-SWA20","description":"\u003ctable width=\"370\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"370\"\u003e\n\u003cp\u003e\u003cbr\u003eSWAN: the perfect compromise between quality, cost, eye-relief and edge sharpness.  All with a SWA super-wide angle 72 deg. F.O.V. ! The ultimate 1.25 ” SWA eyepiece.   Try and compare! Ideal for SCT and refractor telescopes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePerfect match with William Optics telescopes or any brand of telescope.\u003c\/strong\u003e\u003cbr\u003e• Outstanding super-wide field of view: 72 deg. F.O.V.\u003cbr\u003e• Fully Multicoated lenses for excellent transmittance.\u003cbr\u003e• Outstanding chromatic aberration correction.\u003cbr\u003e• Excellent contrast and light throughput for sharp viewing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGreat Contrast\u003c\/strong\u003e \u003cbr\u003e• Fully internally blackened (lens edges and internal spacers). \u003cbr\u003e• No internal reflections.\u003cbr\u003e• No flaring or ghosting on high-contrast objects. \u003cbr\u003e• Parfocal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLight and Easy\u003c\/strong\u003e \u003cbr\u003e• Soft rubber eyecup\u003cbr\u003e• Long eye-relief: 17 mm\u003cbr\u003e• No internal reflections or kidney bean effect\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTerrific Fit and Finish\u003c\/strong\u003e \u003cbr\u003e• High-resistance anodized black barrel.\u003cbr\u003e• Smooth design for no hook up in your focuser. \u003cbr\u003e• Threaded for 1.25” filters.\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":12157882241,"sku":"WIL-E-SWA20","price":79.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/swan20_01.jpeg?v=1776459323"},{"product_id":"william-optics-gran-turismo-81-triplet-apo-telescope-in-gold-a-f81gtii","title":"William Optics Gran Turismo 81 Triplet APO Refractor in Gold - FREE Flat6AIII \u0026 32mm Guide Scope! - A-F81GTIVGD","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Gran Turismo 81 Triplet\u003cbr\u003eAPO Telescope - White with Gold Highlights\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/GT81IV_Imaging_Package_Gold.webp?v=1786994813\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e81 mm Aperture f\/5.9 Imaging Refractor Telescope\u003c\/li\u003e\n\u003cli\u003eFPL-53 glass for color free Apochromatic performance\u003c\/li\u003e\n\u003cli\u003eAir-spaced Triplet APO Objective\u003c\/li\u003e\n\u003cli\u003eCompatible with 0.8 Reducer\/Flattener - Optional\u003c\/li\u003e\n\u003cli\u003eCovers full frame imaging circle, with Flattener\u003c\/li\u003e\n\u003cli\u003e2.5\" dual-speed Rack \u0026amp; Pinion Focuser\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIncludes Mounting rings and Vixen style dovetail\u003c\/li\u003e\n\u003cli\u003eDovetail is dual type - flip over to get Arca Swiss plate\u003c\/li\u003e\n\u003cli\u003eWeight: 3.74 kg (OTA with rings and dovetail attached)\u003c\/li\u003e\n\u003cli\u003eIncludes Soft Carry Bag\u003c\/li\u003e\n\u003cli\u003eIncludes Dust Cover with built-in Bahtinov Mask\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eFREE 32mm Guide Scope \u0026amp; Flattener for a limited time!\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe William Optics Gran Turismo 81 Imaging APO Telescope is a high quality Apochromatic Imaging optical telescope with an aperture of 81 mm and a focal length of 478 mm or an f-ratio of f\/5.9, without the Reducer\/Flattener.\u003c\/p\u003e\n\u003cp\u003eIf you wish to take great astro-images with a high quality APO refractor, this William Optics Gran Turismo 81 Imaging APO telescope is a good way to obtain your goal. Its FPL-53 glass APO design provides images with extreme sharpness, clear details, great color, with APO grade color correction. Add the included FLAT6AIII Reducer\/Flattener to shorten the focal length. Then the image circle will be full frame compatible, and perfect for imaging deep sky objects.\u003c\/p\u003e\n\u003cp\u003eIntroducing a first innovative feature in the industry: Now this Gran Turismo 81 Imaging APO Telescope from William Optics comes standard with a dust cover that has a built-in, clear Bahtinov Mask for perfect focusing every time. Simply remove the flat front cover plate, leaving the dust cover cuff in place on the scope. Point the telescope at a bright star, and focus carefully. When the bright central diffraction spike looks exactly centered between the other two spikes forming an \"X\", then your telescope is in exact focus for stars. Remove the dust cover cuff carefully from the objective end of the telescope, and you are ready to image.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eWhat's In The Box:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe WO Gran Turismo 81 Imaging APO Telescope - White with Gold Highlights*\u003c\/li\u003e\n\u003cli\u003eTwo Clamshell-style Telescope Mounting Rings w\/ knurled clamp screws\u003c\/li\u003e\n\u003cli\u003eVixen-style (or Arca-Swiss) Dovetail Plate for mounting the scope\u003c\/li\u003e\n\u003cli\u003eAPO (Apochromatic) design Objective w\/ FPL-53 glass\u003c\/li\u003e\n\u003cli\u003e2.5\" Dual-speed Rack \u0026amp; Pinion style Focuser\u003c\/li\u003e\n\u003cli\u003eMachined Carrying Handle\u003c\/li\u003e\n\u003cli\u003eFLAT6AIII Reducer\/Flattener\u003c\/li\u003e\n\u003cli\u003e32mm Guide Scope\u003c\/li\u003e\n\u003cli\u003eHigh Quality Soft Carry Bag\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLens Type: Triplet APO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFocal LengthL 478 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eDiameter: 81 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFocal Ratio: f\/5.9\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eImage Circle: 45 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFocuser: 2.5\" Rack \u0026amp; Pinion, compatible with EAF\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFocuser Travel: 93 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eAdapter Included: M63 Rotator, 2\" - 1.25\" Visual Back\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFlattener Reduction: FLAT6AIII - 0.8X, FLATGT - 1X\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eCamera Format: Full Frame with Flattener, APS-C, M4\/3\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eDovetail Type: Vixen on one side, Arca-Swiss on the other\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eTube Length: 390 mm - 460 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eOTA Weight: 3.9 kg\/8.6 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e*The images shown do include the Red version (and Space Gray version) of this scope, but note that you will be receiving the Gold version.  We know the color isn't right, but we wanted to show you as many angles of the scope as possible.  Thank you!\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":21673974104177,"sku":"WIL-A-F81GTIVGD","price":2481.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/GT-81-IV-Gold_Right.webp?v=1786994814"},{"product_id":"william-optics-flt-156-triplet-fluorostar-air-spaced-apo-telescope-a-f156gd-rp37","title":"William Optics FLT 156 Triplet Fluorostar Air-Spaced APO Gold OTA - A-F156GD-RP37","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics FLT 156 Triplet Fluorostar Air-Spaced\u003cbr\u003e APO OTA - Gold\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e156 mm Aperture f\/7.8 Imaging Refractor OTA\u003c\/li\u003e\n\u003cli\u003eTriplet w\/ FPL-53 and Lanthanum glasses for Apochromatic performance\u003c\/li\u003e\n\u003cli\u003eCovers full frame imaging circle (44 mm)\u003c\/li\u003e\n\u003cli\u003eCamera Format: APS-C, Full Frame\u003c\/li\u003e\n\u003cli\u003eTwo-speed 3.7\" Rack \u0026amp; Pinion Focuser\u003c\/li\u003e\n\u003cli\u003eColor: Gold\u003c\/li\u003e\n\u003cli\u003eIncludes 3 Mounting rings and Losmandy style dovetail\u003c\/li\u003e\n\u003cli\u003eWeight: 17 kg\u003c\/li\u003e\n\u003cli\u003eIncludes Interchangable Camera T-Mount\u003c\/li\u003e\n\u003cli\u003eCompatible With: WO Flattener Lenses\u003c\/li\u003e\n\u003cli\u003eIncludes Dust Cover with built-in Bahtinov Mask\u003c\/li\u003e\n\u003cli\u003eAdjustable Dew Shield\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe William Optics Fluorostar 156 APO OTA is a high quality Apochromatic Imaging and visual use OTA with an aperture of 156 mm and a focal length of 1217 mm or an f-ratio of f\/7.8. This Fluorostar 156 APO OTA can also be used with an interchangable camera mounting system, with various T-mounts for cameras (not included).\u003c\/p\u003e\n\u003cp\u003eThe William Optics FLT 156 Triplet Fluorostar OTA utilizes a steel objective cell for its 156 mm lens. This steel cell has proven to be less subject to pinching the objective due to changes in ambient temperature when compared with a large aluminum cell. This means your FLT-FPL-53 and Lanthanum objective will remain unconstrained and in good alignment during sudden changes of temperature, to continue to provide the APO performance you expect. This Fluorostar 156 APO OTA from William Optics is provided in Gold color accents with a white tube.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e Photos of this model OTA are not available. The photos show the model in Blue color for illustration purposes, only.\u003c\/p\u003e\n\u003cp\u003eIf you wish to take great astro-images with a high quality APO refractor, this William Optics Fluorostar 156 APO OTA is a great way to achieve your imaging goals. Its FPL-53 glass air-spaced Triplet lens design provides images with extreme sharpness, clear details, with APO grade color correction.\u003c\/p\u003e\n\u003cp\u003eIncludes a Mounting Base dovetail (Losmandy type), 3.7\" Dual-speed Rack and Pinion Focuser, three clamshell type Mounting Rings for the OTA, and the new innovative Bahtinov Mask cover. The newly designed three-piece ring and Losmandy base system provides better support for your large refractor OTA with no chance for flexure of the tube, and it provides a great handle and built-in base for other Vixen-base accessories.\u003c\/p\u003e\n\u003cp\u003eIntroducing a first innovative feature in the industry: Now this Fluorostar 156 APO OTA from William Optics comes standard with a dust cover that has a built-in, clear Bahtinov Mask for perfect focusing every time. Simply remove the flat front cover plate, leaving the dust cover cuff in place on the OTA. Point the OTA at a bright star, and focus carefully. When the bright central diffraction spike looks exactly centered between the other two spikes forming an \"X\", then your OTA is in exact focus for stars. Remove the dust cover cuff carefully from the objective end of the OTA, and you are ready to image.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Number:\u003c\/td\u003e\n\u003ctd\u003eA-F156GD-RP37\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Type:\u003c\/td\u003e\n\u003ctd\u003eTriplet Apochromatic Refractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Aperture:\u003c\/td\u003e\n\u003ctd\u003e156 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Cell:\u003c\/td\u003e\n\u003ctd\u003eUses a Steel objective cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length:\u003c\/td\u003e\n\u003ctd\u003e1217 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio:\u003c\/td\u003e\n\u003ctd\u003ef\/7.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser:\u003c\/td\u003e\n\u003ctd\u003e3.7\" Dual-Speed Rack \u0026amp; Pinion Focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Format:\u003c\/td\u003e\n\u003ctd\u003eFull Frame\/APS-C Image Compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Color:\u003c\/td\u003e\n\u003ctd\u003eGold\/White\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length:\u003c\/td\u003e\n\u003ctd\u003e1120 mm (Fully Retracted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length:\u003c\/td\u003e\n\u003ctd\u003e1330 mm (Fully Extended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Weight:\u003c\/td\u003e\n\u003ctd\u003e17 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting:\u003c\/td\u003e\n\u003ctd\u003eLosmandy Type Dovetail in same color\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible With:\u003c\/td\u003e\n\u003ctd\u003eW.O. Flatteners (NOT Included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eT-Mount:\u003c\/td\u003e\n\u003ctd\u003eInterchangable T-Mount Style for Compatibility\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eT-Rings:\u003c\/td\u003e\n\u003ctd\u003eNone, T-Rings are available as optional accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinder and Finder Rings:\u003c\/td\u003e\n\u003ctd\u003eNone, These are available as optional accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":31855878701169,"sku":"WIL-A-F156GD-RP37","price":12417.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/FLT156-1_4a60ea19-1dc3-4853-b543-6deb43a4c221.jpg?v=1776459325"},{"product_id":"william-optics-precision-copper-t-mount-for-canon-eos-ye-tr-br48-c","title":"William Optics Precision Copper T-Mount For Canon EOS - YE-TR-BR48-C","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Precision Copper T-Mount For Canon EOS Camera\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh Precision T-Mount for Canon EOS Full Frame\u003c\/li\u003e\n\u003cli\u003eMade from Copper by CNC Machining\u003c\/li\u003e\n\u003cli\u003eHas an Outer Hardened Coating\u003c\/li\u003e\n\u003cli\u003eWill Have a Perfect Fit to your Camera\u003c\/li\u003e\n\u003cli\u003eNo Gaps; No Shaking on the Camera\u003c\/li\u003e\n\u003cli\u003eCompatible W\/ WOStar71, RedCat51, all W.O. Flatteners\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis William Optics Precision Copper T-Mount For Canon EOS full frame cameras is the ideal way to attach your flattener or W.O. telescope to a Canon EOS full frame camera. It is designed and made to give you a perfect, precision fit to the Canon camera as well as to the device being attached. There will be no loose gaps and no shaking with this Copper T-Mount For Canon EOS from William Optics.\u003c\/p\u003e\n\u003cp\u003eThe Precision Copper T-Mount is made from copper material and is fabricated using CNC machining to guarantee perfect shape and dimensions for a perfect attachment. It has a hardened outside coating to provide long life and low wear. This William Optics Precision Copper T-Mount For Canon EOS achieves a far better fit and function than the usual aluminum mounts.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct SKU:\u003c\/td\u003e\n\u003ctd\u003eYE-TR-BR48-C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type:\u003c\/td\u003e\n\u003ctd\u003eT-Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesigned For:\u003c\/td\u003e\n\u003ctd\u003eCanon EOS Full Frame Camera\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFabricated From:\u003c\/td\u003e\n\u003ctd\u003eCopper w\/ Hard Coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e155 grams\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThreads:\u003c\/td\u003e\n\u003ctd\u003e48 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit Type:\u003c\/td\u003e\n\u003ctd\u003eHigh-Precision Fit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":32010083270769,"sku":"WIL-YE-TR-BR48-C","price":149.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/img_3900.jpg?v=1776458965"},{"product_id":"william-optics-precision-copper-t-mount-for-nikon-ye-tr-br48-n","title":"William Optics Precision Copper T-Mount For Nikon - YE-TR-BR48-N","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Precision Copper T-Mount For\u003cbr\u003e Nikon Camera\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh Precision T-Mount for Nikon Full Frame Camera\u003c\/li\u003e\n\u003cli\u003eMade from Copper by CNC Machining\u003c\/li\u003e\n\u003cli\u003eHas an Outer Hardened Coating\u003c\/li\u003e\n\u003cli\u003eWill Have a Perfect Fit to your Camera\u003c\/li\u003e\n\u003cli\u003eNo Gaps; No Shaking on the Camera\u003c\/li\u003e\n\u003cli\u003eCompatible W\/ WOStar71, RedCat51, all W.O. Flatteners\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis William Optics Precision Copper T-Mount For Nikon full frame cameras is the ideal way to attach your flattener or W.O. telescope to your Nikon full frame camera. It is designed and made to give you a perfect, precision fit to the Nikon camera as well as to the device being attached. There will be no loose gaps and no shaking with this Copper T-Mount For Nikon from William Optics.\u003c\/p\u003e\n\u003cp\u003eThe Precision Copper T-Mount is made from copper material and is fabricated using CNC machining to guarantee perfect shape and dimensions for a perfect attachment. It has a hardened outside coating to provide long life and low wear. This William Optics Precision Copper T-Mount For Nikon cameras achieves a far better fit and function than the usual aluminum mounts.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct SKU:\u003c\/td\u003e\n\u003ctd\u003eYE-TR-BR48-N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type:\u003c\/td\u003e\n\u003ctd\u003eT-Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesigned For:\u003c\/td\u003e\n\u003ctd\u003eNikon Full Frame Camera\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFabricated From:\u003c\/td\u003e\n\u003ctd\u003eCopper w\/ Hard Coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e105 grams\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThreads:\u003c\/td\u003e\n\u003ctd\u003e48 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit Type:\u003c\/td\u003e\n\u003ctd\u003eHigh-Precision Fit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":32010091790449,"sku":"WIL-YE-TR-BR48-N","price":149.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/img_3906.jpg?v=1776459197"},{"product_id":"william-optics-redcat-handle-bar-red-m-hcrc-rd","title":"William Optics RedCat Handle Bar - Red - M-HCRC-RD","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics RedCat Handle Bar - Red\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHandle Bar For Cat Series - Saddle\u003c\/li\u003e\n\u003cli\u003eMade from Aluminum using CNC Machining\u003c\/li\u003e\n\u003cli\u003eHas an Outer Hardened Coating\u003c\/li\u003e\n\u003cli\u003eWill Have a Perfect Fit\u003c\/li\u003e\n\u003cli\u003eRed Color\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis William Optics New version Cat Series Saddle-type Handle Bar is made to attach to and fit the new Cat Series Ring. The new version mounting ring is required for the Cat scopes and this Saddle Handle. The new Ring has the paw logo on it, and this Handle Bar has the cat whiskers logo on it.\u003c\/p\u003e\n\u003cp\u003eThis product, the William Optics RedCat Handle Bar - Red color has a Vixen style saddle built into it to accept the William Optics Uniguide scope or any other Vixen type mounted guiding scope. It includes two knurled-head metal screws to secure a Vixen dovetail bar into this saddle, and also includes two hex socket head cap screws to attach this handle to the mounting bar.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct SKU:\u003c\/td\u003e\n\u003ctd\u003eM-HCRC-RD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\/Function:\u003c\/td\u003e\n\u003ctd\u003eHandle Bar With Vixen Saddle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits To:\u003c\/td\u003e\n\u003ctd\u003eCat Series - New Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eAluminum - CNC Fabrication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor:\u003c\/td\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncludes:\u003c\/td\u003e \u003ctd\u003e2 knurled-head metal screws - Vixen Saddle; and 2 hex socket head cap screws - attach Handle to Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":32011869749361,"sku":"WIL-M-HCRC-RD","price":83.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/img_4966.jpg?v=1776458928"},{"product_id":"william-optics-push-in-2-nosepiece-for-the-w-o-2-diagonal-wd-dig2a","title":"William Optics Push-In 2\" Nosepiece For The W.O. 2\" Diagonal - WD-DIG2A","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Push-In 2\" Nosepiece For\u003cbr\u003e The W.O. 2\" Diagonal\u003c\/h3\u003e\n\u003cp\u003eThis William Optics Push-In 2\" Nosepiece For The W.O. 2\" Diagonal is designed for a specific purpose: It will turn a standard 2\" SCT diagonal into a standard 2\" Push-In smooth barrel diagonal while using your existing (SCT) star diagonal, so you do not need to buy a new one.\u003c\/p\u003e\n\u003cp\u003eIf you now have a William Optics refractor telescope with a 2\" type focuser barrel, and you want to use your own 2\" SCT diagonal or a clone version with that refractor telescope, purchase this simple adapter and attach it to convert your existing star diagonal into a push-in diagonal. Just remove the 2\" SCT nosepiece and replace it with this smooth barrel William Optics Push-In 2\" Nosepiece.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e This replacement adapter is only designed for William Optics 2\" type diagonals, and NOT for a 1.25\" model.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct SKU:\u003c\/td\u003e\n\u003ctd\u003eWD-DIG2A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size:\u003c\/td\u003e\n\u003ctd\u003eFor 2\" Focuser receivers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eAluminum, Black Anodized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm\/Fit:\u003c\/td\u003e\n\u003ctd\u003eFor Converting 2\" SCT Star Diagonal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eReplaces an SCT Nosepiece with Push-In Nosepiece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThreads:\u003c\/td\u003e\n\u003ctd\u003eM48 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":32012308119665,"sku":"WIL-WD-DIG2A","price":54.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/img_0369_1_1.jpg?v=1776459294"},{"product_id":"william-optics-new-super-quality-1-25-90-erect-prism-upright-correct-ep90-125ii","title":"William Optics NEW Super Quality 1.25\" 90° Erect Prism (Upright-Correct) - D-EP90-125II","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics NEW Super Quality 1.25\" 90° Erect Prism - Upright-Correct Image\u003c\/h3\u003e\n\u003cp\u003eThis William Optics 1.25\" 90° erecting prism will be a joy to be used with that nice premium refractor of yours! It will be perfect for daytime observations too, because of its Upright-Correct Image. It is internally threaded and blackened to reduce stray light reflections.\u003c\/p\u003e\n\u003cp\u003eThis 90° William Optics NEW, Super Quality, 1.25\" Erect Image Prism - Star Diagonal with an Upright-Correct Image uses an image-erecting BAK4 prism with an anti-reflection coating. This is a very high accuracy and high reflectivity prism optic. This Super Quality 1.25\" 90° Erect Image Prism from William Optics also has a new feature which you will appreciate - it has a Helical Focusing feature on the top barrel which allows you to make fine-focus adjustments. Finally, it is threaded for accepting most 1.25\" filters.\u003c\/p\u003e\n\u003cp\u003eThis William Optics 1.25\", 90° erecting prism Star Diagonal is make from highest quality aluminum, black anodized, with a smooth exterior finish.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct SKU:\u003c\/td\u003e\n\u003ctd\u003eD-EP90-125II\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size:\u003c\/td\u003e\n\u003ctd\u003eFor 1.25\" Focuser receivers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eAluminum, Black Anodized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm\/Fit:\u003c\/td\u003e\n\u003ctd\u003e1.25\" Star Diagonal (Prism)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eA Prism Star Diagonal with Push-In Barrel, 1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Orientation:\u003c\/td\u003e\n\u003ctd\u003eCorrect (Erect) Image\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdded Feature:\u003c\/td\u003e\n\u003ctd\u003eHelical Focusing Barrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInside Diameter:\u003c\/td\u003e\n\u003ctd\u003eThreaded for 1.25\" filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e180 grams\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":32014397800561,"sku":"WIL-D-EP90-125II","price":160.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/img_3576.jpg?v=1776459264"},{"product_id":"william-optics-1-25-45-erect-prism-d-ep125","title":"William Optics 1.25\" 45° Erect Prism - D-EP125","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Super Quality 1.25\" - 45° Erect Prism - Upright-Correct Image\u003c\/h3\u003e\n\u003cp\u003eThis William Optics 1.25\" 45° erecting prism will be a joy to be used with that nice premium refractor of yours! It will be perfect for daytime observations too, because of its Upright-Correct Image. It is internally threaded and blackened to reduce stray light reflections.\u003c\/p\u003e\n\u003cp\u003eThis 45° William Optics Quality, 1.25\" Erect Image Prism - Star Diagonal with an Upright-Correct Image uses an image-erecting BAK4 prism with an anti-reflection coating. This is a very high accuracy and high reflectivity prism optic. This 1.25\", 45° Erect Image Prism from William Optics uses a brass compression ring and screw to firmly retain your eyepiece in its barrel.\u003c\/p\u003e\n\u003cp\u003eThis William Optics 1.25\", 45° erecting prism Star Diagonal is make from highest quality aluminum, black anodized for most parts, with a shiny bright aluminum barrel, with a smooth exterior finish.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct SKU:\u003c\/td\u003e\n\u003ctd\u003eD-EP125\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size:\u003c\/td\u003e\n\u003ctd\u003eFor 1.25\" Focuser receivers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eAluminum, Black Anodized plus Bright\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm\/Fit:\u003c\/td\u003e\n\u003ctd\u003e1.25\" Star Diagonal (Prism)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eA 45° Prism Star Diagonal with Push-In Barrel, 1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Orientation:\u003c\/td\u003e\n\u003ctd\u003eCorrect (Erect) Image\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInside Diameter:\u003c\/td\u003e\n\u003ctd\u003e25 mm Clear Aperture Prism\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e170 grams\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":32014574452849,"sku":"WIL-D-EP125","price":152.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/img_6868.jpg?v=1776459060"},{"product_id":"william-optics-dura-bright-1-25-dielectric-diagonal-1-10-wave-99-12-mm-mirror-carbon-plates-d-125d-c-db","title":"William Optics Dura Bright 1.25\" Dielectric Diagonal - 1\/10 Wave - 99% - 12 mm Mirror - Carbon Plates - D-125D-C-DB","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Dura Bright 1.25\" Dielectric Diagonal - 1\/10 Wave - 99% - 12 mm Mirror - Carbon Plates\u003c\/h3\u003e\n\u003cp\u003eThis William Optics Dura Bright 1.25\" Dielectric Diagonal has an amazing 1\/10 Wave flatness dielectric coated mirror. This mirror will not degrade your images at all. This star diagonal also sports a 99% reflectivity, 12 mm thick Mirror, so you know it will always retain its high surface flatness specification. Finally, this Dura Bright 1.25\" Dielectric Diagonal offers full Carbon Fiber Side Plates for lower weight and better stability.\u003c\/p\u003e\n\u003cp\u003eThis 90° 1.25\" mirror-type star diagonal has a Dura-Bright 12 mm thick mirror and dielectric mirror coatings for 99% reflectivity which provides higher contrast and resolution during critical planetary, lunar, and binary star observations. Dura-Bright features 100% real carbon fiber side plates that add that touch of class your scope deserves.\u003c\/p\u003e\n\u003cp\u003eBig, knurled thumbscrew is easy to turn even with gloves on. Threaded for 48 mm Filters. Patented, elegant design; you will know it is from William Optics! Has High-quality machining out of the best aluminum. Includes internal anti-reflection baffling for highest contrast. Includes Real Carbon Fiber side plates. This Dura Bright 1.25\" Dielectric Diagonal - 1\/10 Wave - 99% with 12 mm thickness Mirror from William Optics uses a compression ring to prevent marring the barrels. It has an internal safety stop provided to prevent accidently allowing 1.25\" barrels from hitting the mirror. It was designed to be used for the highest-end telescopes.\u003c\/p\u003e\n\u003cp\u003eWhy is it the W.O. Diagonals do NOT feature any adjustable optical alignment method or system? This is an unnecessary system or adjustment to include with William Optics diagonals. Thanks to the patented design of W.O. diagonals, you will always have an optical alignment which is as perfect as it was on the first day you got it! The optical alignment will not drift!\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct SKU:\u003c\/td\u003e\n\u003ctd\u003eD-125D-C-DB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size:\u003c\/td\u003e\n\u003ctd\u003eFor 1.25\" Focuser receivers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eAluminum, Black Anodized and Carbon Fiber Side Plates\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm\/Fit:\u003c\/td\u003e\n\u003ctd\u003e1.25\" Star Diagonal (Mirror)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eA Mirror Star Diagonal with Push-In Barrel, 1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflectivity:\u003c\/td\u003e\n\u003ctd\u003e99% Dielectric Coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Flatness:\u003c\/td\u003e\n\u003ctd\u003e1\/10 Wave Flat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInside Diameter:\u003c\/td\u003e\n\u003ctd\u003eThreaded for 1.25\" filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e210 grams\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":32014621180017,"sku":"WIL-D-125D-C-DB","price":190.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/d-125d-c-db_01a.jpg?v=1776459068"},{"product_id":"william-optics-m48-nikon-f-t-ring-black-tm-nk-f-m48","title":"William Optics M48 Nikon F T-Ring - Black - TM-NK-F-M48","description":"\u003ch2 style=\"text-align: center;\"\u003eWilliam Optics 48 mm T Ring for Nikon F Cameras\u003c\/h2\u003e\n\u003cp\u003eUse this aluminum black-anodized T-ring to attach your Nikon F camera body to an imaging accessory, etc. with M48 threads.\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":32259488055409,"sku":"WIL-TM-NK-F-M48","price":54.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/M48_Nikon_Black.png?v=1776459009"},{"product_id":"william-optics-m48-canon-eos-t-ring-black-tm-cn-eos-m48","title":"William Optics M48 Canon EOS T-Ring - Black - TM-CN-EOS-M48","description":"\u003ch2 style=\"text-align: center;\"\u003eWilliam Optics 48 mm T Ring for Canon EOS Cameras\u003c\/h2\u003e\n\u003cp\u003eUse this aluminum black-anodized T-ring to attach your Canon EOS camera body to an imaging accessory, etc. with M48 threads.\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":32259488612465,"sku":"WIL-TM-CN-EOS-M48","price":54.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/TM-CN-EOS-M48_bayonet.png?v=1776458999"},{"product_id":"william-optics-flat6aiii-m92-0-8x-reducer-field-flattener-for-flt91-flat6aiii-m92","title":"William Optics 0.8X Reducer \u0026 Field Flattener for FLT91 - FLAT6AIII-M92","description":"The William Optics FLAT6AIII for the Fluorostar 91 refractor brings imaging to the next level of adjustability and image quality. This 0.8X field flattener uses Ohara optical glass in an FMC Triplet APO design for amazing clarity and sharpness. The William Optics FLAT 6AIII adjustable Focal Reducer \u0026amp; Field Flattener has an image circle large enough to cover full frame, 43.26 mm diagonal sensors!\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe FLT91 version of the FLAT6AIII has M92 threads on the focuser side and M48 threads to accept a larger M48 T-ring and camera. There are M48 threads inside that will accept filters as well.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe adjustable distance for DSLR's and mirrorless cameras is 5.4 mm.","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39415191404657,"sku":"WIL-P-FLAT6AIII-M92","price":480.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/flat6aiii.jpg?v=1776459161"},{"product_id":"william-optics-flt91-apo-triplet-refractor-space-gray","title":"William Optics FLT91 APO Triplet Refractor - Space Gray - T-FLT-91SG-RP33","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Fluorostar 91 Triplet Refractor in Space Gray\u003c\/h3\u003e\n\u003cp\u003eThis beautiful 91 mm f\/5.9 APO Triplet refractor is decked out and ready to ride on your telescope mount!  Whether you want to do visual astronomy, astrophotography, terrestrial observing or wildlife photography, this is the scope for you!  The FLT91 is designed from the optics down for a quality experience.  The optics are housed in a steel lens cell and consist of three elements (triplet) made of fully multi-coated Ohara FPL-53 glass.  Contrast, clarity and virtually color-free results will boost your visual and astro-imaging to a new level.\u003c\/p\u003e\n\u003cp\u003eThe 3.3-inch dual-speed rack \u0026amp; pinion focuser is built to hold the weight of a camera and other equipment, like the dedicated \u003ca href=\"https:\/\/khanscope.com\/products\/william-optics-flat6aiii-m92-0-8x-reducer-field-flattener-for-flt91-flat6aiii-m92\" title=\"William Optics FLT91 Field Flattener and 0.8X Reducer - FLAT6AIII-M92\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eFLT91 0.8X Reducer and Field Flattener\u003c\/a\u003e, without flexing.  A super smooth field rotator is included to make it easier to frame the perfect shot, and it has markings every degree for repeatable results.  \u003c\/p\u003e\n\u003cp\u003eThe William Optics Rotolock goes way beyond your typical 2\" adapter, and will provide a very solid connection, whether you insert a 2\" diagonal or other accessories.\u003c\/p\u003e\n\u003cp\u003eOn the front end of the FLT91 you will find a custom Bahtinov mask that is connected to the removable lens cover.  It is easy to reveal the mask for precision focusing and then store it away again in the lens cover until you need it again.\u003c\/p\u003e\n\u003cp\u003eYou will also receive beefy mounting rings that connect to an included (and matching!) Vixen-style dovetail plate.  The rings have a built-in handle\/saddle bar on top to make it easy to carry and set up your FLT91...William Optics has thought of everything!  If you'd like to ride a guide scope or finder on top, this patented saddle bar handle will accept the William Optics Uniguide as well as other Vixen-style finders or guidescopes.\u003c\/p\u003e\n\u003cp\u003eFinally, the William Optics FLT91 comes with a soft carry case, allowing you to protect your telescope when not in use or when traveling to the perfect dark-sky site or terrestrial wonder.  \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003e Technical Specifications\u003c\/h3\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eLens Type:\u003c\/strong\u003e  Apochromatic Triplet Prime Lens\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eFocal Length:\u003c\/strong\u003e  540mm\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eAperture\u003c\/strong\u003e:  91mm\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eFocal Ratio\u003c\/strong\u003e:  f\/5.9\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eFocuser\u003c\/strong\u003e:  Dual Speed 3.3\" R\u0026amp;P Focuser\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eLens Material\u003c\/strong\u003e:  Ohara FPL-53\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eStrehl Ratio\u003c\/strong\u003e:  0.95+\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eCamera Format\u003c\/strong\u003e:  Full Frame DSLR \/ Mirrorless \/ CMOS \/ CCD\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eRetracted Length\u003c\/strong\u003e:  441mm\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eExtended Length\u003c\/strong\u003e:  510mm\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eExtension Tube Length\u003c\/strong\u003e:  40mm\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eOTA Weight\u003c\/strong\u003e:  4.165Kg\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eTotal Weight\u003c\/strong\u003e:  5.575Kg\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eExtension Tube Weight\u003c\/strong\u003e:  0.105Kg\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39415200153713,"sku":"WIL-T-FLT-91SG-RP33","price":3033.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/flt91_White_Silver.jpg?v=1776458911"},{"product_id":"william-optics-bafm-st001","title":"William Optics Mini Vixen Style Mounting Base - BAFM-ST001II","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Mini Vixen Style Mounting Base\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWilliam Optics Vixen Style Mounting Base\u003c\/li\u003e\n\u003cli\u003eAluminum metal which is CNC fabricated\u003c\/li\u003e\n\u003cli\u003eAccepts the standard Vixen-style small Dovetail Accessories\u003c\/li\u003e\n\u003cli\u003eIncludes all required screws to operate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a William Optics Vixen Style Mounting Base. It is designed to accept the standard Vixen-style of mounting foot or base, which is a standard form of a dovetail-cut mount.\u003c\/p\u003e\n\u003cp\u003eThis Vixen-Style Mounting Base from William Optics is made of Aluminum metal which is CNC fabricated and black anodized to look beautiful on your telescope equipment. It includes two (2) knurled head retaining screws to secure the Vixen part in this base, and also includes two (2) hex-socket head screws to be used to attach this base to your instrument. It will be a perfect fit for the Vixen-style small Dovetail Accessories.\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39539386613873,"sku":"WIL-BAFM-ST001II","price":30.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/BAFM-ST001-2_jpg.webp?v=1776459154"},{"product_id":"william-optics-soft-carry-case-for-81-mm-telescope-bg-80","title":"William Optics Soft Carry Case for 81 mm Telescope - BG-80","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Soft Carry Case for 81 mm Telescope\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWilliam Optics Soft Carry Case for 81 mm GT81 and GTF81\u003c\/li\u003e\n\u003cli\u003eMade from Nylon Fabric, Water Resistant on Inside\u003c\/li\u003e\n\u003cli\u003eSpecially made to hold or transport the William Optics 81 mm Telescope\u003c\/li\u003e\n\u003cli\u003eSwan logo on black bag, handles, shoulder strap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a William Optics Soft Carrying Case for their 81 mm Telescopes. This Soft Carrying Case is made specifically to hold and transport the William Optics GT81 and GTF81, 81 mm Telescope, but of course, it could also be used to carry or store other small optical components or telescope if desired. This is a very handy and convenient way to carry or store your prized 81 mm Telescope.\u003c\/p\u003e\n\u003cp\u003eThis Soft Carry Case is made of high quality nylon fabric with a water-resistant coating on the inside surface. Features the company name and swan logo on the outside, carrying handles, and a shoulder strap. Please note that this case is not padded inside, and also that foam is not included. This bag requires that you use the original foam for padding that your 81 mm telescope came boxed in.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMfr. SKU:\u003c\/td\u003e\n\u003ctd\u003eBG-80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eSoft Carry Case for 81 mm Telescope\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccepts\/Fits:\u003c\/td\u003e\n\u003ctd\u003e81 mm Telescope or other small optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eNylon Fabric, Water Resistant on Inside\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncludes:\u003c\/td\u003e\n\u003ctd\u003eSwan logo on black bag, handles, shoulder strap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAttached With:\u003c\/td\u003e\n\u003ctd\u003eZipper Closure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions:\u003c\/td\u003e\n\u003ctd\u003e20.5\" (L) x 7\" (W) x 13.5\" (H)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e1 lb 9 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePadding:\u003c\/td\u003e\n\u003ctd\u003eNone; Note: You use the original foam from Z81 mm box.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39539570671729,"sku":"WIL-BG-80","price":109.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/BG-80.jpg?v=1776459065"},{"product_id":"william-optics-soft-carry-case-for-flt-126-132-telescope-bg1-p005","title":"William Optics Soft Carry Case for FLT 126, 132 Telescope - BG1-P005","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Soft Carry Case for FLT 126, 132 Telescope\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWilliam Optics Soft Carry Case for FLT 126, 132 telescope\u003c\/li\u003e\n\u003cli\u003eMade from Nylon Fabric, Water Resistant on Inside\u003c\/li\u003e\n\u003cli\u003eSpecially made to hold or transport the William Optics FLT 126, 132 Telescope\u003c\/li\u003e\n\u003cli\u003eSwan logo on black bag, handles, shoulder strap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a William Optics Soft Carrying Case for their FLT 126, 132 Telescopes. This Soft Carrying Case is made specifically to hold and transport the William Optics FLT 126, or 132 Telescope, but of course, it could also be used to carry or store other small optical components or telescope if desired. This is a very handy and convenient way to carry or store your prized FLT 126, or 132 Telescope.\u003c\/p\u003e\n\u003cp\u003eThis Soft Carry Case is made of high quality nylon fabric with a water-resistant coating on the inside surface. Features the company name and swan logo on the outside, carrying handles, and a shoulder strap. Please note that this case is not padded inside, and also that foam is not included. This bag requires that you use the original foam for padding that your FLT 126, or 132 telescope came boxed in.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMfr. SKU:\u003c\/td\u003e\n\u003ctd\u003eBG1-P005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eSoft Carry Case for FLT 126, 132 Telescope\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccepts\/Fits:\u003c\/td\u003e\n\u003ctd\u003eFLT 126, or 132 Telescope or other similar optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eNylon Fabric, Water Resistant on Inside\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncludes:\u003c\/td\u003e\n\u003ctd\u003eSwan logo on black bag, handles, shoulder strap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAttached With:\u003c\/td\u003e\n\u003ctd\u003eZipper Closure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions:\u003c\/td\u003e\n\u003ctd\u003e(Not Available from Mfr.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e(Not Available)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePadding:\u003c\/td\u003e\n\u003ctd\u003eNone; Note: You use the original foam from your FLT 126, or 132 box.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39539573588081,"sku":"WIL-BG1-P005","price":344.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/BG1-P005.jpg?v=1776459136"},{"product_id":"william-optics-diffraction-spikes-bahtinov-focusing-mask-dew-shield-243-mm-to-308-mm-bm-ds-gr150","title":"William Optics Diffraction Spikes Bahtinov Focusing Mask - Dew Shield 243 mm to 308 mm - BM-DS-GR150","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Diffraction Spikes Bahtinov Focusing Mask - For Dew Shield 243 mm to 308 mm\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWilliam Optics Diffraction Spikes Bahtinov Focusing Mask\u003c\/li\u003e\n\u003cli\u003eFits dew shields with diameters of 243 mm to 308 mm\u003c\/li\u003e\n\u003cli\u003eClear Acrylic Sheet design provides 92% light transmission\u003c\/li\u003e\n\u003cli\u003eGives the Brightest diffraction spikes for focusing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a William Optics Diffraction Spikes Bahtinov Focusing Mask made from Acrylic material, which is high in light transmission. This design using Acrylic material provides 92% light transmission for the brightest diffraction spikes visibility when you do your focusing. It results in about 3X brighter diffraction spike images than the traditional metal material masks.\u003c\/p\u003e\n\u003cp\u003eThis William Optics Diffraction Spikes Bahtinov Focusing Mask is made to fit dew shields with diameters of 243 mm to 308 mm.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMfr. SKU:\u003c\/td\u003e\n\u003ctd\u003eBM-DS-GR150\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eDiffraction Spikes Bahtinov Focusing Mask\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccepts\/Fits:\u003c\/td\u003e\n\u003ctd\u003eDew Shields with diameters of 243 mm to 308 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eAcrylic, Clear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e(Not Available from Manufacturer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39540129103985,"sku":"WIL-BM-DS-GR150","price":149.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/BM-DS-GR150.jpg?v=1776458988"},{"product_id":"william-optics-diffraction-spikes-bahtinov-focusing-mask-for-dew-shield-75-mm-to-110-mm-bm-ds-gr45","title":"William Optics Diffraction Spikes Bahtinov Focusing Mask - For Dew Shield 75 mm to 110 mm - BM-DS-GR45","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Diffraction Spikes Bahtinov Focusing Mask - For Dew Shield 75 mm to 110 mm\u003c\/h3\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eWilliam Optics Diffraction Spikes Bahtinov Focusing Mask\u003c\/li\u003e\n\t\u003cli\u003eFits dew shields with diameters of 75 mm to 110 mm\u003c\/li\u003e\n\t\u003cli\u003eClear Acrylic Sheet design provides 92% light transmission\u003c\/li\u003e\n\t\u003cli\u003eGives the Brightest diffraction spikes for focusing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nThis is a William Optics Diffraction Spikes Bahtinov Focusing Mask made from Acrylic material, which is high in light transmission. This design using Acrylic material provides 92% light transmission for the brightest diffraction spikes visibility when you do your focusing.  It results in about 3X brighter diffraction spike images than the traditional metal material masks.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis William Optics Diffraction Spikes Bahtinov Focusing Mask is made to fit dew shields with diameters of 75 mm to 110 mm.\n\u003c\/p\u003e\n\n\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\n\u003ctable\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eManufacturer:\u003c\/td\u003e \u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eMfr. SKU:\u003c\/td\u003e \u003ctd\u003eBM-DS-GR45\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eFunction:\u003c\/td\u003e \u003ctd\u003eDiffraction Spikes Bahtinov Focusing Mask\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eAccepts\/Fits:\u003c\/td\u003e \u003ctd\u003eDew Shields with diameters of 75 mm to 110 mm\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eMaterial:\u003c\/td\u003e \u003ctd\u003eAcrylic, Clear\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eWeight:\u003c\/td\u003e \u003ctd\u003e(Not Available from Manufacturer)\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\u003c\/table\u003e\n","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39540272463985,"sku":"WIL-BM-DS-GR45","price":81.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/BM-DS-GR45.jpg?v=1776459194"},{"product_id":"william-optics-diffraction-spikes-bahtinov-focusing-mask-for-dew-shield-105-mm-to-148-mm-bm-ds-gr55","title":"William Optics Diffraction Spikes Bahtinov Focusing Mask - For Dew Shield 105 mm to 148 mm - BM-DS-GR55","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Diffraction Spikes Bahtinov Focusing Mask - For Dew Shield 105 mm to 148 mm\u003c\/h3\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eWilliam Optics Diffraction Spikes Bahtinov Focusing Mask\u003c\/li\u003e\n\t\u003cli\u003eFits dew shields with diameters of 105 mm to 148 mm\u003c\/li\u003e\n\t\u003cli\u003eClear Acrylic Sheet design provides 92% light transmission\u003c\/li\u003e\n\t\u003cli\u003eGives the Brightest diffraction spikes for focusing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nThis is a William Optics Diffraction Spikes Bahtinov Focusing Mask made from Acrylic material, which is high in light transmission. This design using Acrylic material provides 92% light transmission for the brightest diffraction spikes visibility when you do your focusing.  It results in about 3X brighter diffraction spike images than the traditional metal material masks.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis William Optics Diffraction Spikes Bahtinov Focusing Mask is made to fit dew shields with diameters of 105 mm to 148 mm.\n\u003c\/p\u003e\n\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\n\u003ctable\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eManufacturer:\u003c\/td\u003e \u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eMfr. SKU:\u003c\/td\u003e \u003ctd\u003eBM-DS-GR55\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eFunction:\u003c\/td\u003e \u003ctd\u003eDiffraction Spikes Bahtinov Focusing Mask\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eAccepts\/Fits:\u003c\/td\u003e \u003ctd\u003eDew Shields with diameters of 105 mm to 148 mm\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eMaterial:\u003c\/td\u003e \u003ctd\u003eAcrylic, Clear\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eWeight:\u003c\/td\u003e \u003ctd\u003e(Not Available from Manufacturer)\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\u003c\/table\u003e\n","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39540278657137,"sku":"WIL-BM-DS-GR55","price":94.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/BM-DS-GR55.jpg?v=1776459238"},{"product_id":"william-optics-diffraction-spikes-bahtinov-focusing-mask-for-dew-shield-172-mm-to-235-mm-bm-ds-gr90","title":"William Optics Diffraction Spikes Bahtinov Focusing Mask - For Dew Shield 172 mm to 235 mm - BM-DS-GR90","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Diffraction Spikes Bahtinov Focusing Mask - For Dew Shield 172 mm to 235 mm\u003c\/h3\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eWilliam Optics Diffraction Spikes Bahtinov Focusing Mask\u003c\/li\u003e\n\t\u003cli\u003eFits dew shields with diameters of 172 mm to 235 mm\u003c\/li\u003e\n\t\u003cli\u003eClear Acrylic Sheet design provides 92% light transmission\u003c\/li\u003e\n\t\u003cli\u003eGives the Brightest diffraction spikes for focusing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nThis is a William Optics Diffraction Spikes Bahtinov Focusing Mask made from Acrylic material, which is high in light transmission. This design using Acrylic material provides 92% light transmission for the brightest diffraction spikes visibility when you do your focusing.  It results in about 3X brighter diffraction spike images than the traditional metal material masks.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis William Optics Diffraction Spikes Bahtinov Focusing Mask is made to fit dew shields with diameters of 172 mm to 235 mm.\n\u003c\/p\u003e\n\n\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\n\u003ctable\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eManufacturer:\u003c\/td\u003e \u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eMfr. SKU:\u003c\/td\u003e \u003ctd\u003eBM-DS-GR90\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eFunction:\u003c\/td\u003e \u003ctd\u003eDiffraction Spikes Bahtinov Focusing Mask\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eAccepts\/Fits:\u003c\/td\u003e \u003ctd\u003eDew Shields with diameters of 172 mm to 235 mm\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eMaterial:\u003c\/td\u003e \u003ctd\u003eAcrylic, Clear\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eWeight:\u003c\/td\u003e \u003ctd\u003e(Not Available from Manufacturer)\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\u003c\/table\u003e\n","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39540283441265,"sku":"WIL-BM-DS-GR90","price":121.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/BM-DS-GR90.jpg?v=1776459146"},{"product_id":"william-optics-gold-bahtinov-mask-cover-for-wo-gt102-and-z103-telescopes-cpbm-102gd","title":"William Optics Gold Bahtinov Mask Cover- For WO GT102 and Z103 Telescopes - CPBM-102GD","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Gold Bahtinov Mask Cover- For WO GT102 and Z103 Telescopes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWilliam Optics Bahtinov Focusing Mask and Cover\u003c\/li\u003e\n\u003cli\u003eInnovative Design combines Dust Cover and a Bahtinov Mask in one\u003c\/li\u003e\n\u003cli\u003eFits WO GT102 and Z103 Telescopes\u003c\/li\u003e\n\u003cli\u003eClear Acrylic Sheet design provides 92% light transmission\u003c\/li\u003e\n\u003cli\u003eGives the Brightest diffraction spikes for focusing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a William Optics Bahtinov Focusing Mask Cover made from Acrylic material, which is high in light transmission. This design using Acrylic material provides 92% light transmission for the brightest diffraction spikes visibility when you do your focusing. It results in about 3X brighter diffraction spike images than the traditional metal material masks.\u003c\/p\u003e\n\u003cp\u003eThis William Optics Bahtinov Focusing Mask and Dust Cap Cover is made to fit the William Optics GT102 and Z103 Telescopes. Outer Dust Cap is easily installed or removed by the user, which then reveals the built-in Bahtinov Focusing Mask. This innovative design by William Optics is patented and will provide the ultimate in convenience when you are focusing your telescope.\u003c\/p\u003e\n\u003cp\u003eThis model of the Bahtinov Focusing Mask and Dust Cap Cover is provided in a Gold color finish.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMfr. SKU:\u003c\/td\u003e\n\u003ctd\u003eCPBM-102GD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eBahtinov Focusing Mask and Dust Cover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccepts\/Fits:\u003c\/td\u003e\n\u003ctd\u003eGT102 and Z103 Telescopes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eAcrylic, Clear and Metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor:\u003c\/td\u003e\n\u003ctd\u003eGold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e(Not Available from Manufacturer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39544873910385,"sku":"WIL-CPBM-102GD","price":218.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/CPBM-102GD.jpg?v=1776459041"},{"product_id":"william-optics-red-bahtinov-mask-cover-for-wo-gt102-and-z103-telescopes-cpbm-102rd","title":"William Optics Red Bahtinov Mask Cover- For WO GT102 and Z103 Telescopes - CPBM-102RD","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Red Bahtinov Mask Cover- For WO GT102 and Z103 Telescopes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWilliam Optics Bahtinov Focusing Mask and Cover\u003c\/li\u003e\n\u003cli\u003eInnovative Design combines Dust Cover and a Bahtinov Mask in one\u003c\/li\u003e\n\u003cli\u003eFits WO GT102 and Z103 Telescopes\u003c\/li\u003e\n\u003cli\u003eClear Acrylic Sheet design provides 92% light transmission\u003c\/li\u003e\n\u003cli\u003eGives the Brightest diffraction spikes for focusing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a William Optics Bahtinov Focusing Mask Cover made from Acrylic material, which is high in light transmission. This design using Acrylic material provides 92% light transmission for the brightest diffraction spikes visibility when you do your focusing. It results in about 3X brighter diffraction spike images than the traditional metal material masks.\u003c\/p\u003e\n\u003cp\u003eThis William Optics Bahtinov Focusing Mask and Dust Cap Cover is made to fit the William Optics GT102 and Z103 Telescopes. Outer Dust Cap is easily installed or removed by the user, which then reveals the built-in Bahtinov Focusing Mask. This innovative design by William Optics is patented and will provide the ultimate in convenience when you are focusing your telescope.\u003c\/p\u003e\n\u003cp\u003eThis model of the Bahtinov Focusing Mask and Dust Cap Cover is provided in a Red color finish.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMfr. SKU:\u003c\/td\u003e\n\u003ctd\u003eCPBM-102RD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eBahtinov Focusing Mask and Dust Cover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccepts\/Fits:\u003c\/td\u003e\n\u003ctd\u003eGT102 and Z103 Telescopes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eAcrylic, Clear and Metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor:\u003c\/td\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e(Not Available from Manufacturer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39544881905777,"sku":"WIL-CPBM-102RD","price":218.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/CPBM-102RD.jpg?v=1776458974"},{"product_id":"william-optics-zenithstar-61-f-5-9-doublet-apo-telescope-ota-z61iigd","title":"William Optics ZenithStar 61 f\/5.9 Doublet APO Telescope OTA - A-Z61IIGD","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics ZenithStar 61 f\/5.9 Doublet APO Telescope OTA\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWilliam Optics ZenithStar 61 f\/5.9 Doublet APO OTA\u003c\/li\u003e\n\u003cli\u003eInnovative Design, 61 mm Aperture, 360 mm Focal Length\u003c\/li\u003e\n\u003cli\u003eCompact and portable, fast f\/ratio Telescope\u003c\/li\u003e\n\u003cli\u003ef\/5.9 Focal Ratio with a lightweight 2.2 kg OTA Tube\u003c\/li\u003e\n\u003cli\u003eIdeal for both visual observing and astro-imaging work\u003c\/li\u003e\n\u003cli\u003eProvides a Full Frame image circle for imaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a William Optics ZenithStar 61 f\/5.9 Doublet APO Telescope OTA designed for use as a short-tube, fast f\/ratio, APO imaging telescope Optical Tube Assembly which can be used for either visual observing or astro-imaging work depending upon your needs. It is a very lightweight and portable telescope OTA which is great for travel by any methods including flying. This is a great telescope OTA to use with either full-frame or APS-C type detector imagers, including the Canon EF, Nikon F, Sony E, Pentax, Micro 4\/3 types, or Fuji FX cameras.\u003c\/p\u003e\n\u003cp\u003eThis William Optics ZenithStar 61 f\/5.9 Doublet APO OTA weighs in at only 2.2 kg (or only 4.85 pounds), and the OTA is only 245 mm (9.65 inches) long when the dew shield has been retracted. It has a fast f\/5.9 optical system based upon a doublet objective which uses FPL-53 glass to provide APO color correction and high resolution performance in a short focal length system OTA.\u003c\/p\u003e\n\u003cp\u003eThis model of the ZenithStar 61 mm f\/5.9 Doublet APO OTA from William Optics is provided in a Gold color finish. It includes a smooth and stable-operating 2\" Rack \u0026amp; Pinion Focuser with a Two-speed 10:1 Fine Focusing control. It also includes the WO Cat Handle Bar with a Vixen style Saddle, the WO Bahtinov Mask Dust Cover, and a newly designed, stronger Clamshell ring with a built-in Dovetail plate. This ZenithStar 61 mm f\/5.9 Doublet APO OTA is ready to mount on your own tripod or astro-mount, and use with your existing eyepieces and star diagonal, or your camera equipment if you will do astro-imaging.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e This product is an OTA only, and does NOT include any Finder, eyepiece, diagonal, guide scope, or field flattener. William Optics recommends their Flat61A or their Flat61R Field Flattener optics for use with this telescope, for those doing astro-imaging.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMfr. SKU:\u003c\/td\u003e\n\u003ctd\u003eA-Z61IIGD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eZenithStar 61 f\/5.9 Doublet APO OTA (Telescope)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture:\u003c\/td\u003e\n\u003ctd\u003e61 mm (2.40\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length:\u003c\/td\u003e\n\u003ctd\u003e360 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio:\u003c\/td\u003e\n\u003ctd\u003ef\/5.9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Format Covered:\u003c\/td\u003e\n\u003ctd\u003eAPS-C and Full Frame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle:\u003c\/td\u003e\n\u003ctd\u003eFull Frame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser:\u003c\/td\u003e\n\u003ctd\u003e2\" Rack \u0026amp; Pinion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Tube Length:\u003c\/td\u003e\n\u003ctd\u003e315 mm Extended; 245 mm Retracted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZ61IIGD Color:\u003c\/td\u003e\n\u003ctd\u003eGold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Weight:\u003c\/td\u003e\n\u003ctd\u003e2.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterchangeable T-Mount:\u003c\/td\u003e\n\u003ctd\u003eCanon EF, Nikon F, Sony E, Pentax, Micro 4\/3, Fuji FX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39548596912241,"sku":"WIL-A-Z61IIGD","price":962.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/Z61II1.jpg?v=1776458969"},{"product_id":"william-optics-zenithstar-61-f-5-9-doublet-apo-telescope-ota-space-grey-tg-color-a-z61iitg","title":"William Optics ZenithStar 61 f\/5.9 Doublet APO Telescope OTA - Space Grey (TG) Color - A-Z61IITG","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics ZenithStar 61 f\/5.9 Doublet APO Telescope OTA - Space Grey (TG) Color\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWilliam Optics (Space Grey) ZenithStar 61 f\/5.9 Doublet APO OTA\u003c\/li\u003e\n\u003cli\u003eInnovative Design, 61 mm Aperture, 360 mm Focal Length\u003c\/li\u003e\n\u003cli\u003eCompact and portable, fast f\/ratio Telescope\u003c\/li\u003e\n\u003cli\u003ef\/5.9 Focal Ratio with a lightweight 2.2 kg OTA Tube\u003c\/li\u003e\n\u003cli\u003eIdeal for both visual observing and astro-imaging work\u003c\/li\u003e\n\u003cli\u003eProvides a Full Frame image circle for imaging\u003c\/li\u003e\n\u003cli\u003eIncludes a Soft Carry Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a William Optics Space Grey ZenithStar 61 f\/5.9 Doublet APO Telescope OTA designed for use as a short-tube, fast f\/ratio, APO imaging telescope Optical Tube Assembly, which can be used for either visual observing or astro-imaging work depending upon your needs. It is a very lightweight and portable telescope OTA which is great for travel by any methods including flying. This is a great telescope OTA to use with either full-frame or APS-C type detector imagers, including the Canon EF, Nikon F, Sony E, Pentax, Micro 4\/3 types, or Fuji FX cameras.\u003c\/p\u003e\n\u003cp\u003eThis William Optics Space Grey ZenithStar 61 f\/5.9 Doublet APO OTA weighs in at only 2.2 kg (or only 4.85 pounds), and the OTA is only 245 mm (9.65 inches) long when the dew shield has been retracted. It has a fast f\/5.9 optical system based upon a doublet objective which uses FPL-53 glass to provide APO color correction and high resolution performance in a short focal length system OTA.\u003c\/p\u003e\n\u003cp\u003eThis model of the ZenithStar 61 mm f\/5.9 Doublet APO OTA from William Optics is provided in Space Grey (TG) color finish. It includes a smooth and stable-operating 2\" Rack \u0026amp; Pinion Focuser with a Two-speed 10:1 Fine Focusing control. It also includes the WO Cat Handle Bar with a Vixen style Saddle, the WO Bahtinov Mask Dust Cover, and a newly designed, stronger Clamshell ring with a built-in Dovetail plate, and a Soft Carry Case. This ZenithStar 61 mm f\/5.9 Doublet APO OTA is ready to mount on your own tripod or astro-mount, and use with your existing eyepieces and star diagonal, or your camera equipment if you will do astro-imaging.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e This product is an OTA only, and does NOT include any Finder, eyepiece, diagonal, guide scope, or field flattener. William Optics recommends their Flat61A or their Flat61R Field Flattener optics for use with this telescope, for those doing astro-imaging.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMfr. SKU:\u003c\/td\u003e\n\u003ctd\u003eA-Z61IITG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eZenithStar 61 f\/5.9 Doublet APO OTA (Telescope)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture:\u003c\/td\u003e\n\u003ctd\u003e61 mm (2.40\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length:\u003c\/td\u003e\n\u003ctd\u003e360 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio:\u003c\/td\u003e\n\u003ctd\u003ef\/5.9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Format Covered:\u003c\/td\u003e\n\u003ctd\u003eAPS-C and Full Frame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle:\u003c\/td\u003e\n\u003ctd\u003eFull Frame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser:\u003c\/td\u003e\n\u003ctd\u003e2\" Rack \u0026amp; Pinion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Tube Length:\u003c\/td\u003e\n\u003ctd\u003e315 mm Extended; 245 mm Retracted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor:\u003c\/td\u003e\n\u003ctd\u003eSpace Grey (TG)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Weight:\u003c\/td\u003e\n\u003ctd\u003e2.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterchangeable T-Mount:\u003c\/td\u003e\n\u003ctd\u003eCanon EF, Nikon F, Sony E, Pentax, Micro 4\/3, Fuji FX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39548621095025,"sku":"WIL-A-Z61IITG","price":962.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/Z61II1_7298714f-99fa-4d41-bd97-def542833298.jpg?v=1776459299"},{"product_id":"william-optics-2x-barlow-1-25-nosepiece-for-binoviewer-e-bino-b2","title":"William Optics 2X Barlow 1.25\" Nosepiece For Binoviewer - E-Bino-B2","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics 2X Barlow 1.25\" Nosepiece For Binoviewer\u003c\/h3\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e1.25\" Size 2X Barlow Nosepiece For Binoviewers\u003c\/li\u003e\n\t\u003cli\u003eFits William Optics Binoviewers\u003c\/li\u003e\n\t\u003cli\u003eProvides a 2-Power magnification\u003c\/li\u003e\n\t\u003cli\u003eCan be installed on 1.25\" eyepieces which have threads\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nThis 2-power (2X) Barlow 1.25\" Nosepiece For Binoviewers from William Optics makes it easier to focus with most telescope. It can be screwed onto 1.25\" eyepieces as well as binoviewers. For even more magnification, it can be placed after the optional binoviewer extender. This device functions as a very short-barrel Barlow lens, providing a 2X magnification, via a negative lens.\n\u003c\/p\u003e\n\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\n\u003ctable\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eManufacturer:\u003c\/td\u003e \u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eMfr. SKU:\u003c\/td\u003e \u003ctd\u003eE-Bino-B2\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eFunction:\u003c\/td\u003e \u003ctd\u003e2X Barlow lens\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eFits:\u003c\/td\u003e \u003ctd\u003e1.25\" Eyepieces (threaded) or Binoviewers\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eFormat:\u003c\/td\u003e \u003ctd\u003eNosepiece design for Binoviewers\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eWeight:\u003c\/td\u003e \u003ctd\u003eNot available from manufacturer\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\u003c\/table\u003e\n","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39548641968241,"sku":"WIL-E-BINO-B2","price":81.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/E-Bino-B2.jpg?v=1776458961"},{"product_id":"william-optics-dura-bright-2-dielectric-diagonal-for-sct-d-dig2d-c-db-sct","title":"William Optics Dura Bright 2\" Dielectric Diagonal for SCT - D-DIG2D-C-DB-SCT","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Dura Bright 2\" Dielectric Diagonal For SCT Threads\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDura Bright Star Diagonal from William Optics\u003c\/li\u003e\n\u003cli\u003eFor 2\" eyepiece barrels\u003c\/li\u003e\n\u003cli\u003eHigh-Reflectivity, 99% Reflective Mirror\u003c\/li\u003e\n\u003cli\u003eDielectric type Mirror, ultra-flat\u003c\/li\u003e\n\u003cli\u003eThis model is for SCT threaded telescopes\u003c\/li\u003e\n\u003cli\u003eAttaches directly to SCT rear barrel of telescope\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a Dura Bright Star Diagonal from William Optics which is made specifically for use on an SCT telescope. It attaches directly to the SCT threads on the rear cell of the telescope or similar telescope. This Diagonal uses a dielectric coated mirror to provide 99% Reflectivity for best brightness, and also a 1\/10th wavelength flatness mirror surface to preserve the high quality optical images your telescope will provide.\u003c\/p\u003e\n\u003cp\u003eThis model is for SCT threaded telescopes. Attaches directly to SCT rear barrel of telescopes. It accepts the Standard 2\" barrel eyepieces. It also features full Carbon Fiber Plates on the housing for strength, durability, and reduced weight.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMfr. SKU:\u003c\/td\u003e\n\u003ctd\u003eD-DIG2D-C-DB-SCT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eMirror type Star Diagonal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits:\u003c\/td\u003e\n\u003ctd\u003eStandard SCT output barrel threads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccepts:\u003c\/td\u003e\n\u003ctd\u003eStandard 2\" eyepieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Flatness:\u003c\/td\u003e\n\u003ctd\u003e1\/10 wavelength\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Reflectivity:\u003c\/td\u003e\n\u003ctd\u003e99%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Type:\u003c\/td\u003e\n\u003ctd\u003eDura Bright\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFeatures:\u003c\/td\u003e\n\u003ctd\u003eFull Carbon Fiber Plates\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39561671573617,"sku":"WIL-D-DIG2D-C-DB-SCT","price":286.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/img_0142_2.png?v=1776459090"},{"product_id":"william-optics-stc-astro-duo-narrowband-filter-48-mm-yf-stc-adn","title":"William Optics STC Astro Duo-Narrowband Filter - 48 mm - YF-STC-ADN","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics STC Astro Duo-Narrowband Filter - 48 mm\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTC Astro Duo-Narrowband Filter from William Optics\u003c\/li\u003e\n\u003cli\u003e48 mm Size\u003c\/li\u003e\n\u003cli\u003eClip Filter - Dual Band type\u003c\/li\u003e\n\u003cli\u003eLight pollution type filter\u003c\/li\u003e\n\u003cli\u003eEnhances H-alpha and Oxygen III wavelengths\u003c\/li\u003e\n\u003cli\u003eProfessional Ion Beam-assisted deposition and AR-coating technology\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a William Optics STC Astro Duo-Narrowband Filter - 48 mm size. STC Astro Duo-Narrowband filter can reduce the interference from artificial lighting (man made light pollution) in the city, and enhance the wave length of Hα and OIII. IBAD (Ion beam-assisted deposition) coating technology makes the glass higher durability and easily cleaning, and preventing aging variation in optical spectral characteristics due to temperature and humidity change. The Matte black Anodized and Teflon-coated frame design eliminates flare and is also very easy to install or remove from your lens.\u003c\/p\u003e\n\u003cp\u003eAstro Duo-Narrowband filters are designed to capture specific wavelengths of gaseous and planetary nebulae. Of particular interest to astrophotographers is the Hα emission line at 656 nm and OIII lines at 500 nm, performing high transmission and rejecting light pollution as well as the important blocking of longer wavelengths. It brings more detail and contrast in your image. The professional Ion Beam-assisted deposition and AR coating technology is applied on Schott optical glass, to ensure highest possible level of durability and also excellent image quality.\u003c\/p\u003e\n\u003cp\u003eMatte black anodized and Teflon-coated frame design eliminates flare and easy to install or remove from your lens.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMfr. SKU:\u003c\/td\u003e\n\u003ctd\u003eYF-STC-ADN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eSTC Astro Duo-Narrowband Filter - 48 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits:\u003c\/td\u003e\n\u003ctd\u003eStandard 48 mm diam. barrel threads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccepts:\u003c\/td\u003e\n\u003ctd\u003eStandard 2\" eyepieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type:\u003c\/td\u003e\n\u003ctd\u003e48 mm, Clip Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eSCHOTT B270 Optical Glass, Aluminum 6061 Rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Type:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics STC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness:\u003c\/td\u003e\n\u003ctd\u003e1 mm Glass, 3.5 mm for Rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39561984180337,"sku":"WIL-YF-STC-ADN","price":660.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/astro-duo-nb_cover_02.jpg?v=1776458975"},{"product_id":"william-optics-adjustable-field-flattener-for-flt132-or-gt102-or-gt153-p-flat68iii","title":"William Optics Adjustable Field Flattener For FLT132 or GT102 or GT153 - P-FLAT68III","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Adjustable Field Flattener For FLT132 or GT102 or GT153\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWilliam Optics Adjustable Field Flattener\u003c\/li\u003e\n\u003cli\u003eFor FLT132 or GT102 or GT153\u003c\/li\u003e\n\u003cli\u003eFeatures unity (1X) magnification\u003c\/li\u003e\n\u003cli\u003eCan mate with various WO telescopes and focal lengths\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is the William Optics Adjustable Field Flattener For FLT132 or GT102 or GT153. It is their model number P-FLAT68III. It features a unity (1X) magnification for convenient imaging, while flattening your image focal plane. Suitable for use with several camera types, CCD and also CMOS astrocameras. Designed for use with full-frame chip sized DSLR cameras. Made with the highest quality Ohara optical glasses, to provide an ideal FMC Triplet APO design.\u003c\/p\u003e\n\u003cp\u003eYou can adjust the distance for DSLR or mirrorless cameras. As an astronomer doing astro-imaging, you can gain from the interchangable design of this flattener across many William Optics telescopes and objectives, and different cameras. This flattener lens assembly brings your imaging to the next level of image quality with adjustability.\u003c\/p\u003e\n\u003cp\u003eSee photos for details of the Back Focus and Image Circles which are available.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMfr. SKU:\u003c\/td\u003e\n\u003ctd\u003eP-FLAT68III\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eAdjustable Field Flattener\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification:\u003c\/td\u003e\n\u003ctd\u003e1X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustable:\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design:\u003c\/td\u003e\n\u003ctd\u003eTriplet APO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eAluminum, black anodized, Ohara Glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Color:\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39563204165745,"sku":"WIL-P-FLAT68III","price":1087.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/P-FLAT68III-1.jpg?v=1776459242"},{"product_id":"william-optics-1-25-rotolock-adapter-gold-color-f-roto-a2-125gdii","title":"William Optics 1.25\" RotoLock Adapter - Gold color -F-ROTO-A2-125GDII","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics 1.25\" RotoLock Adapter - Gold color\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1.25\" RotoLock Adapter in Gold color\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" Barrel\u003c\/li\u003e\n\u003cli\u003eAccepts 1.25\" eyepieces and accessories\u003c\/li\u003e\n\u003cli\u003eCenters your eyepiece accurately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is the William Optics 1.25\" RotoLock Eyepiece Adapter. This WO adapter is made to accept the industry-standard 1.25\" diameter eyepieces and other accessories of the same size.\u003c\/p\u003e\n\u003cp\u003eYou only need to rotate the adapter ring clockwise to lock any inserted accessory, or counter-clockwise to release the accessory. Innovative design ensures that you get a very solid hold and the accessory or eyepiece will also be perfectly centered every time. You will never have to bother with thumbscrews or worry about losing those in the dark! The internal ball bearings and detents make this adapter a joy to use.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMfr. SKU:\u003c\/td\u003e\n\u003ctd\u003eF-ROTO-A2-125GDII\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003e1.25\" SCT RotoLock Eyepiece Visual Back Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccepts:\u003c\/td\u003e\n\u003ctd\u003eStandard 1.25\" eyepieces or accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eAluminum, multi-anodized colors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor:\u003c\/td\u003e\n\u003ctd\u003eGold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e100 grams\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncludes:\u003c\/td\u003e\n\u003ctd\u003eDust plug - plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries Type:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics RotoLock Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39563206819953,"sku":"WIL-F-ROTO-A2-125GDII","price":80.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/RotoLockAdapters.jpg?v=1776458927"},{"product_id":"william-optics-1-25-rotolock-adapter-red-color-f-roto-a2-125rdii","title":"William Optics 1.25\" RotoLock Adapter - Red color - F-ROTO-A2-125RDII","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics 1.25\" RotoLock Adapter - Red color\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1.25\" RotoLock Adapter in Red color\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" Barrel\u003c\/li\u003e\n\u003cli\u003eAccepts 1.25\" eyepieces and accessories\u003c\/li\u003e\n\u003cli\u003eCenters your eyepiece accurately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is the William Optics 1.25\" RotoLock Eyepiece Adapter. This WO adapter is made to accept the industry-standard 1.25\" diameter eyepieces and other accessories of the same size.\u003c\/p\u003e\n\u003cp\u003eYou only need to rotate the adapter ring clockwise to lock any inserted accessory, or counter-clockwise to release the accessory. Innovative design ensures that you get a very solid hold and the accessory or eyepiece will also be perfectly centered every time. You will never have to bother with thumbscrews or worry about losing those in the dark! The internal ball bearings and detents make this adapter a joy to use.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMfr. SKU:\u003c\/td\u003e\n\u003ctd\u003eF-ROTO-A2-125RDII\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003e1.25\" SCT RotoLock Eyepiece Visual Back Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccepts:\u003c\/td\u003e\n\u003ctd\u003eStandard 1.25\" eyepieces or accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eAluminum, multi-anodized colors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor:\u003c\/td\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e100 grams\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncludes:\u003c\/td\u003e\n\u003ctd\u003eDust plug - plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries Type:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics RotoLock Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39563213045873,"sku":"WIL-F-ROTO-A2-125RDII","price":80.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/RotoLockAdapters2.jpg?v=1776459284"},{"product_id":"william-optics-cat-mounting-ring-m-mr50rc-bl","title":"William Optics Cat Mounting Ring - M-MR50RC-BL","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Cat Mounting Ring\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWilliam Optics Cat Mounting Ring\u003c\/li\u003e\n\u003cli\u003eAllows mounting the WO Space Cat\u003c\/li\u003e\n\u003cli\u003eClamshell Type Mounting Ring\u003c\/li\u003e\n\u003cli\u003eSuitable to mate with the (Optional) Cat Saddle and Handle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is the William Optics Cat Mounting Ring. This WO Mounting Ring uses the standard clamshell-type open\/close attachment method to secure or release your telescope instrument.\u003c\/p\u003e\n\u003cp\u003eThe Cat Mounting Ring from William Optics is provided in black anodized aluminum construction, with a red color knurled-head screw to secure the ring around your Cat. It provides two M6 threaded holes and one 1\/4-20 threaded hole for attaching to your existing mount\/tripod.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMfr. SKU:\u003c\/td\u003e\n\u003ctd\u003eM-MR50RC-BL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eCat Mounting Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccepts:\u003c\/td\u003e\n\u003ctd\u003eOptional Cat Saddle and Handle Bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eAluminum, black anodized color\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor:\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39563220516977,"sku":"WIL-M-MR50RC-BL","price":69.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/img_4979.jpg?v=1776458969"},{"product_id":"william-optics-gold-bahtinov-mask-cover-for-zenithstar-61-telescope-cpbm-61gd","title":"William Optics Gold Bahtinov Mask Cover For ZenithStar 61 Telescope - CPBM-61GD","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Gold Bahtinov Mask Cover For WO ZenithStar 61 Telescope\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWilliam Optics Bahtinov Focusing Mask and Dust Cap\u003c\/li\u003e\n\u003cli\u003eInnovative Design combines Dust Cover and a Bahtinov Mask in one\u003c\/li\u003e\n\u003cli\u003eFits WO ZenithStar 61 Telescope\u003c\/li\u003e\n\u003cli\u003eClear Acrylic Sheet design provides 92% light transmission\u003c\/li\u003e\n\u003cli\u003eGives the Brightest diffraction spikes to assist focusing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a William Optics Gold Bahtinov Focusing Mask and Dust Cap, made from Acrylic material, which is high in light transmission. This design using Acrylic material provides 92% light transmission for the brightest diffraction spikes visibility when you do your focusing. It results in about 3X brighter diffraction spike images than the traditional metal material masks.\u003c\/p\u003e\n\u003cp\u003eThis William Optics Bahtinov Focusing Mask and Dust Cap is made to fit the William Optics ZenithStar 61 Telescope. The outer dust cap is easily installed or removed by the user, which reveals the built-in Bahtinov Focusing Mask. This innovative design by William Optics is patented and will provide the ultimate in convenience when you are focusing your telescope.\u003c\/p\u003e\n\u003cp\u003eThis model of the Bahtinov Focusing Mask and Dust Cap is provided in a Gold color finish.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMfr. SKU:\u003c\/td\u003e\n\u003ctd\u003eCPBM-61GD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eBahtinov Focusing Mask and Dust Cover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccepts\/Fits:\u003c\/td\u003e\n\u003ctd\u003eZenithStar 61 Telescope\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eAcrylic, Clear and Metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor:\u003c\/td\u003e\n\u003ctd\u003eGold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e(Not Available from Manufacturer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39563647975537,"sku":"WIL-CPBM-61GD","price":149.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/CPBM-61GD.jpg?v=1776459242"},{"product_id":"william-optics-gold-bahtinov-mask-cover-for-wo-70-series-telescopes-cpbm-71gd","title":"William Optics Gold Bahtinov Mask Cover For WO 70 Series Telescopes - CPBM-71GD","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Gold Bahtinov Mask Cover For WO 70 Series Telescopes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWilliam Optics Bahtinov Focusing Mask and Dust Cap\u003c\/li\u003e\n\u003cli\u003eInnovative Design combines Dust Cover and a Bahtinov Mask in one\u003c\/li\u003e\n\u003cli\u003eFits WO 70 Series Telescopes\u003c\/li\u003e\n\u003cli\u003eClear Acrylic Sheet design provides 92% light transmission\u003c\/li\u003e\n\u003cli\u003eGives the Brightest diffraction spikes to assist focusing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a William Optics Gold Bahtinov Focusing Mask and Dust Cap, made from Acrylic material, which is high in light transmission. This design using Acrylic material provides 92% light transmission for the brightest diffraction spikes visibility when you do your focusing. It results in about 3X brighter diffraction spike images than the traditional metal material masks.\u003c\/p\u003e\n\u003cp\u003eThis William Optics Bahtinov Focusing Mask and Dust Cap is made to fit the William Optics 70 Series Telescopes. The outer dust cap is easily installed or removed by the user, which reveals the built-in Bahtinov Focusing Mask. This innovative design by William Optics is patented and will provide the ultimate in convenience when you are focusing your telescope.\u003c\/p\u003e\n\u003cp\u003eThis model of the Bahtinov Focusing Mask and Dust Cap is provided in a Gold color finish.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMfr. SKU:\u003c\/td\u003e\n\u003ctd\u003eCPBM-71GD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eBahtinov Focusing Mask and Dust Cover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccepts\/Fits:\u003c\/td\u003e\n\u003ctd\u003e70 Series Telescopes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eAcrylic, Clear and Metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor:\u003c\/td\u003e\n\u003ctd\u003eGold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e(Not Available from Manufacturer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39563694375025,"sku":"WIL-CPBM-71GD","price":163.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/CPBM-71GD.jpg?v=1776459249"},{"product_id":"william-optics-red-bahtinov-mask-cover-for-wo-70-series-telescopes-cpbm-71rd","title":"William Optics Red Bahtinov Mask Cover For WO 70 Series Telescopes - CPBM-71RD","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics Red Bahtinov Mask Cover For WO 70 Series Telescopes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWilliam Optics Bahtinov Focusing Mask and Dust Cap\u003c\/li\u003e\n\u003cli\u003eInnovative Design combines Dust Cover and a Bahtinov Mask in one\u003c\/li\u003e\n\u003cli\u003eFits WO 70 Series Telescopes\u003c\/li\u003e\n\u003cli\u003eClear Acrylic Sheet design provides 92% light transmission\u003c\/li\u003e\n\u003cli\u003eGives the Brightest diffraction spikes to assist focusing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a William Optics Red Bahtinov Focusing Mask and Dust Cap, made from Acrylic material, which is high in light transmission. This design using Acrylic material provides 92% light transmission for the brightest diffraction spikes visibility when you do your focusing. It results in about 3X brighter diffraction spike images than the traditional metal material masks.\u003c\/p\u003e\n\u003cp\u003eThis William Optics Bahtinov Focusing Mask and Dust Cap is made to fit the William Optics 70 Series Telescopes. The outer dust cap is easily installed or removed by the user, which reveals the built-in Bahtinov Focusing Mask. This innovative design by William Optics is patented and will provide the ultimate in convenience when you are focusing your telescope.\u003c\/p\u003e\n\u003cp\u003eThis model of the Bahtinov Focusing Mask and Dust Cap is provided in a Red color finish.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMfr. SKU:\u003c\/td\u003e\n\u003ctd\u003eCPBM-71RD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eBahtinov Focusing Mask and Dust Cover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccepts\/Fits:\u003c\/td\u003e\n\u003ctd\u003e70 Series Telescopes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eAcrylic, Clear and Metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor:\u003c\/td\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e(Not Available from Manufacturer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39563698176113,"sku":"WIL-CPBM-71RD","price":163.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/CPBM-71RD.jpg?v=1776459148"},{"product_id":"william-optics-cat71-redcat-71-mm-f-4-9-petzval-apo-refractor-t-c-71rd","title":"William Optics Red Cat71 - RedCat 71 mm f\/4.9 Refractor - T-C-71RD","description":"\u003cp\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cem\u003e\u003cstrong\u003eHurry, just one left at an amazing price!\u003c\/strong\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe William Optics RedCat refractor continues to be immensely popular, but if you'd like more aperture, check out the 71 mm f\/4.9 RedCat!  This beautifully designed Petzval astrograph sports four optical elements in a three group configuration (2-1-1).  The doublet front group is made of FPL-53 glass, followed by one central element and a rear lens.  This optical design produces a flat image plane on its own, with an image circle of over 45 mm, without the need for a flattener.  With an image circle this big, the RedCat 71 is compatible with full frame or APS-C sensors.\u003c\/p\u003e\n\u003cp\u003eThe William Optics Cat71 comes with a built-in Bahtinov mask to assist in focusing, and a calibrated helical focuser.  The lockable helical focuser has a large surface area that makes it easy to focus, even with gloves.  It's gear ring has 153 teeth, which is more precise than most camera lenses.  Behind the focuser is a camera angle rotator with tension knob and a tilt adapter, which ends in M48 threads.\u003c\/p\u003e\n\u003cp\u003eThe RedCat 71 comes complete with a saddle handlebar on top.  This handle accepts accessories such as a finder or guide scope but is raised above the focuser enough to serve as a carry handle. A pair of super sturdy mounting rings are also included and attach to an Arca Swiss\/Vixen style plate, making it easy to connect the Cat71 to a telescope mount or heavy-duty camera tripod.\u003c\/p\u003e\n\u003cp\u003eWhen you're not using your telescope, you can store it in the included soft carry bag!\u003c\/p\u003e\n\u003ch3\u003eSpecifications:\u003c\/h3\u003e\n\u003cp\u003eFocal Length:  348 mm\u003c\/p\u003e\n\u003cp\u003eDiameter:  71 mm\u003c\/p\u003e\n\u003cp\u003eFocal Ratio:  f\/4.9\u003c\/p\u003e\n\u003cp\u003eImage Circle:  \u0026gt;44 mm\u003c\/p\u003e\n\u003cp\u003eFocuser:  Helical with 2GT Gear Ring\u003c\/p\u003e\n\u003cp\u003eTube Length with Dew Shield:  435 mm\u003c\/p\u003e\n\u003cp\u003eWeight of OTA:  2.8kg \/ 6.2 lb.\u003c\/p\u003e\n\u003cp\u003eWeight of OTA with Hardware:  3.7kg \/ 8.2 lb.\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39583084052593,"sku":"WIL-T-C-71RD","price":1845.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/fat0005_2.jpg?v=1776459039"},{"product_id":"william-optics-sony-e-m48-t-ring-black-tm-cn-sn-e-m48","title":"William Optics Sony E M48 T-Ring - Black - TM-CN-SN-E-M48","description":"\u003ch2 style=\"text-align: center;\"\u003eWilliam Optics 48 mm T Ring for Sony E Cameras\u003c\/h2\u003e\n\u003cp\u003eUse this aluminum black-anodized T-ring to attach your Sony E camera body to an imaging accessory, etc. with M48 threads.\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39592699035761,"sku":"WIL-TM-SN-E-M48","price":76.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/M48_Sony_E_Mount.png?v=1776459041"},{"product_id":"william-optics-low-latitude-base-mount-for-skyguider-pro-yg-io-sg01l-rd","title":"William Optics Low Latitude Base Mount for SkyGuider Pro - YG-IO-SG01L-RD","description":"\u003cp\u003eThis beautifully made SkyGuider Pro base mount is designed for those who are in lower latitudes of 7 to about 34 degrees.  The Low Latitude Vixen-Style Base Mount is precision made on CNC machines and is a nice upgrade to add both stability and the ability to make adjustments to the position of your iOptron SkyGuider Pro, which is sold separately.  \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39595456069745,"sku":"WIL-YG-IO-SG01L-RD","price":381.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/Low_Lat_Base.png?v=1776458922"},{"product_id":"william-optics-high-latitude-base-mount-for-skyguider-pro-yg-io-sg01l-rd","title":"William Optics High Latitude Base Mount for SkyGuider Pro - YG-IO-SG01H-RD","description":"\u003cp\u003eThis beautifully made SkyGuider Pro base mount is designed for those who are in higher latitudes of 32 to about 59 degrees.  The High Latitude Vixen-Style Base Mount is precision made on CNC machines and is a nice upgrade to add both stability and the ability to make adjustments to the position of your iOptron SkyGuider Pro, which is sold separately.  \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39595462623345,"sku":"WIL-YG-IO-SG01H-RD","price":381.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/High_Lat_Base_1.png?v=1776459299"},{"product_id":"william-optics-redcat-61-f-4-9-petzval-refractor","title":"William Optics Red Cat61 - 61mm f\/4.9 Petzval Refractor - T-C-61RD","description":"\u003cp\u003eThe William Optics RedCat 61 f\/4.9 Petzval Refractor is a fast, portable quad refractor perfect for astrophotography. Its four elements are arranged in three groups, with FPL-53 glass used in the first group of two, followed by a single central element and a single rear lens that acts as a flattener. This quad optical system produces beautifully flat, high contrast images that are virtually free of chromatic aberration.\u003c\/p\u003e\n\u003cp\u003eThe RedCat 61 Petzval Refractor features the Patented WO center focuser with precise internal sliding of fixed optics to prevent image shift. The integrated position viewing window on the focuser provides instant verification of the graduated numerical display. The smooth rack and pinion design is incorporated into the focuser to provide super fine adjustability for critical focus.\u003c\/p\u003e\n\u003cp\u003eThe solid tube where accessories are attached has a rigid design and will not flex or exhibit any change in the optical path regardless of the weight of the camera and filter wheel attached to it. The field rotator allows for smooth camera rotation and is plainly marked in degrees for easy repeatability. A locking thumbscrew prevents accidental camera movement.\u003c\/p\u003e\n\u003cp\u003eThe RedCat 61 optical tube is made of aluminum and anodized. A matching dew shield is included, as is an aluminum lens cap. A Bahtinov focus mask and Saddle Bar are also part of this package. It is compatible with Canon EF \u0026amp; RF, Nikon F \u0026amp; Z, Sony E, Pentax K, Micro Four Thirds (M4\/3) and Fuji X cameras.\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":40203044749425,"sku":"WIL-T-C-61RD","price":1504.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/redcat61-ota-and-accessories.jpg?v=1776459290"},{"product_id":"william-optics-gt-71-triplet-apo-telescope-in-red-with-free-camera-angle-rotator-a-f71gtii-rd","title":"William Optics GT 71 Triplet APO Telescope in Red - A-F71GTII-RD","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics GT 71 Triplet Air-Spaced\u003cbr\u003eAPO Telescope - Red\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e71 mm Aperture f\/5.9 Imaging Refractor Telescope\u003c\/li\u003e\n\u003cli\u003eTriplet w\/ FPL-53 glass for Apochromatic performance\u003c\/li\u003e\n\u003cli\u003eCovers full frame imaging circle (44 mm)\u003c\/li\u003e\n\u003cli\u003e2.5\" Dual-speed WO R \u0026amp; P Focuser\u003c\/li\u003e\n\u003cli\u003eColor: White w\/Red Trim\u003c\/li\u003e\n\u003cli\u003eIncludes: 2 Mounting rings\u003c\/li\u003e\n\u003cli\u003eWeight: 2.2 kg (4.85 lb)\u003c\/li\u003e\n\u003cli\u003eIncludes Dust Cover with built-in Bahtinov Mask\u003c\/li\u003e\n\u003cli\u003eAdjustable\/Retractable Dew Shield\u003c\/li\u003e\n\u003cli\u003eVixen style Dovetail Plate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe William Optics GT 71 APO Telescope is a high quality Apochromatic Imaging and visual use telescope with an aperture of 71 mm and a focal length of 420 mm or an f-ratio of f\/5.9. This GT 71 APO Telescope from William Optics can be used with a camera mounting system, with various T-mounts for cameras (not included), or equally well as a visual observing instrument. Features a top-quality triplet air-spaced objective, designed by a leading designer with FPL-53 glass. The telescope utilizes precision optics with STM coatings. This GT 71 APO telescope is extremely sharp and has great color correction, ideal for astrophotography.\u003c\/p\u003e\n\u003cp\u003eYou will be astonished by the images you get. If you wish to take great astro-images with a high quality APO refractor, this William Optics GT 71 APO Telescope is the convenient way to achieve your imaging goals, with its focal length of 420 mm. Its FPL-53 glass air-spaced Triplet lens design provides images with extreme sharpness, clear details, with APO color correction. Just as great for doing visual observations. This William Optics GT 71 APO Telescope will be an attraction and a hit at every star party you attend.\u003c\/p\u003e\n\u003cp\u003eIncorporates the 2.5\" WO Rack \u0026amp; Pinion heavy duty focuser, which is ideal to use with astro-imaging, providing ideal focusing ability with no image shift. The 71 mm objective is a great size for both wide-field and planetary visual observations, and its apochromatic performance makes it ideal for imaging. This is a do-it-all telescope. And it is small enough to take with you when you travel and carry aboard airline flights.\u003c\/p\u003e\n\u003cp\u003eThe GT 71 APO Telescope from William Optics incorporates the finest triplet objective with a new FPL-53 center element. This stunning William Optics Gran Turismo (GT) 71 APO telescope is the \"jewel\" of the APO refractor industry. It has a beautiful white powder coated finish with elegant red trim and the best optics and a superior focuser, so it has more than just good looks.\u003c\/p\u003e\n\u003cp\u003eIncludes dual Mounting rings, 2.5\" Dual-speed WO R\u0026amp;P Focuser which is 360° rotatable for convenience, Vixen style Dovetail Plate, and the new innovative Bahtinov Mask cover. It can be used visually or with digital cameras, and is compatible with a Field Flattener (optional purchase). This telescope package also includes a premium soft Carrying Case for storage and transportation.\u003c\/p\u003e\n\u003cp\u003eIntroducing a first innovative feature in the industry: Now this GT 71 APO Telescope from William Optics comes standard with a dust cover that has a built-in, clear Bahtinov Mask for perfect focusing every time. Simply remove the flat front cover plate, leaving the dust cover cuff in place on the telescope. Point the telescope at a bright star, and focus carefully. When the bright central diffraction spike looks exactly centered between the other two spikes forming an \"X\", then your telescope is in exact focus for stars. Remove the dust cover cuff carefully from the objective end of the telescope, and you are ready to image.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003ePlease Note:  We have included images of the Gold version of the GT71 due to the lack of photos of the Red Version.  The scope you will receive with this order is the popular White with Red Highlights.  See the first image to help you visualize the rest.  Thanks!\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Number:\u003c\/td\u003e\n\u003ctd\u003eA-F71GTII\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Type:\u003c\/td\u003e\n\u003ctd\u003eTriplet Air-Spaced Apochromatic Refractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Aperture:\u003c\/td\u003e\n\u003ctd\u003e71 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length:\u003c\/td\u003e\n\u003ctd\u003e420 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio:\u003c\/td\u003e\n\u003ctd\u003ef\/5.9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser:\u003c\/td\u003e\n\u003ctd\u003e2.5\" Dual-Speed WO R\u0026amp;P Focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection:\u003c\/td\u003e\n\u003ctd\u003e360° Rotatable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolving Power:\u003c\/td\u003e\n\u003ctd\u003e1.62 arcsec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Color:\u003c\/td\u003e\n\u003ctd\u003eWhite with Red trim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length:\u003c\/td\u003e\n\u003ctd\u003e325 mm (Fully Retracted); 427 mm (Extended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Weight:\u003c\/td\u003e\n\u003ctd\u003e2.2 kg (4.85 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible With:\u003c\/td\u003e\n\u003ctd\u003e1:1 Full Frame Flattener\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eT-Mount:\u003c\/td\u003e\n\u003ctd\u003eInterchangable T-Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eT-Rings:\u003c\/td\u003e\n\u003ctd\u003eNone, T-Rings are available as optional accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":40203975131249,"sku":"WIL-A-F71GTII-RD","price":1515.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/F71GTII-RD.jpg?v=1776459338"},{"product_id":"william-optics-gt81-grand-turismo-refractor-with-wifd-focuser-red-t-gt-81rd-wifd","title":"William Optics GT81 Grand Turismo Refractor with WIFD Focuser - Red - T-GT-81RD-WIFD","description":"\u003ccenter\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/fSj8gG_PK1g\" height=\"315\" width=\"560\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/center\u003e\n\u003cp\u003eThe William Optics GT81 Triplet Refractor has a focal length of 478 mm and an f\/ratio of f\/5.9.  FPL-53 glass is used in the optical system to reduce chromatic aberration and produce sharp, high contrast images, whether using the GT81 for observing or astrophotography.  \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cem\u003eThis GT71 WIFD model is white with red trim; it is also available in space gray or gold at the same price.  We may show other colors if the image itself is helpful.  Just remember that you will get a white\/red telescope, regardless of the colors you see on this page.  Thanks.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cspan\u003eWIFD Technology\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e The William Optics Internal Focus Design, or WIFD, is an innovative and revolutionary design that combines a precision internal focusing mechanism with high quality optics, providing the ultimate apochromatic refractor for astrophotography. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDesigned from the ground up with the ability to handle the newest generation of large, heavy, high-resolution cooled cameras, the rock-solid optical tube assembly is uncompromised in quality. The movement of the focuser is integrated inside the main tube assembly, so there are no movements of a focuser drawtube visible from the outside.  The user can enjoy the benefits of a traditional two speed fine focuser, while not worrying about limitations typically found in traditional rear mounted focusers. \u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIncluded Accessories\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eGT81 f\/5.9 Tube Assembly - White with Red Trim\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eDust Cover with Bahtinov Mask\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003e120 mm Saddle Handle Bar\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCamera Angle Rotator\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eM92 to M63 Adapter\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003e210 Vixen-Style Dovetail Plate\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eSoft Carry Case\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eZYGO Test Report\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"Highlights of the William Optics GT81 WIFD Refractor\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/GT81_Highlights_480x480.png?v=1686265273\" width=\"525\" height=\"677\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eLens Design:  APO Triplet with 1 FPL-53 Element\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eAperture:  81 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eFocal Length:  478 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eFocal Ratio:  f.5.9\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eFocuser:  WIFD\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eImage Circle:  45 mm (Full Frame)\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eRetracted Length:  421 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eExtended Length:  502 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eDew Shield Circumference:  382 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eDew Shield Diameter:  121 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eWeight of OTA Only:  3.58kg\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eWeight of OTA with Ring, Dovetail \u0026amp; Saddle:  4.565kg\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eColor:  White with Red Trim\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eStrehl Ratio:  0.95+\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eTest Report:  Included\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eOptional Flattener:  FLAT6AIII 0.8X or FLAT68III 1X, which requires an WIFD Extension Adapter\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":40203994366065,"sku":"WIL-T-GT-81RD-WIFD","price":3033.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/GT81_WIFD_Red_Side_Angle_Left.png?v=1776459297"},{"product_id":"william-optics-gt81-grand-turismo-refractor-with-wifd-focuser-gold-t-gt-81gd-wifd","title":"William Optics GT81 Grand Turismo Refractor with WIFD Focuser - Gold - T-GT-81GD-WIFD","description":"\u003ccenter\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/fSj8gG_PK1g\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e\u003c\/center\u003e\n\u003cp\u003eThe William Optics GT81 Triplet Refractor has a focal length of 478 mm and an f\/ratio of f\/5.9.  FPL-53 glass is used in the optical system to reduce chromatic aberration and produce sharp, high contrast images, whether using the GT81 for observing or astrophotography.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThis GT71 WIFD model is white with gold trim; it is also available in red or space gray at the same price.  We may show other colors if the image itself is helpful.  Just remember that you will get a white\/gold telescope, regardless of the colors you see on this page.  Thanks.\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cem\u003e\u003c\/em\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cspan\u003eWIFD Technology\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe William Optics Internal Focus Design, or WIFD, is an innovative and revolutionary design that combines a precision internal focusing mechanism with high quality optics, providing the ultimate apochromatic refractor for astrophotography. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDesigned from the ground up with the ability to handle the newest generation of large, heavy, high-resolution cooled cameras, the rock-solid optical tube assembly is uncompromised in quality. The movement of the focuser is integrated inside the main tube assembly, so there are no movements of a focuser drawtube visible from the outside.  The user can enjoy the benefits of a traditional two speed fine focuser, while not worrying about limitations typically found in traditional rear mounted focusers. \u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIncluded Accessories\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eGT81 f\/5.9 Tube Assembly - White with Gold Trim\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eDust Cover with Bahtinov Mask\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003e120 mm Saddle Handle Bar\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCamera Angle Rotator\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eM92 to M63 Adapter\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003e210 Vixen-Style Dovetail Plate\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eSoft Carry Case\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eZYGO Test Report\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg style=\"display: block; margin-left: auto; margin-right: auto;\" height=\"677\" width=\"525\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/GT81_Highlights_480x480.png?v=1686265273\" alt=\"Highlights of the William Optics GT81 WIFD Refractor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eLens Design:  APO Triplet with 1 FPL-53 Element\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eAperture:  81 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eFocal Length:  478 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eFocal Ratio:  f.5.9\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eFocuser:  WIFD\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eImage Circle:  45 mm (Full Frame)\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eRetracted Length:  421 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eExtended Length:  502 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eDew Shield Circumference:  382 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eDew Shield Diameter:  121 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eWeight of OTA Only:  3.58kg\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eWeight of OTA with Ring, Dovetail \u0026amp; Saddle:  4.565kg\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eColor:  White with Gold Trim\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eStrehl Ratio:  0.95+\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eTest Report:  Included\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eOptional Flattener:  FLAT6AIII 0.8X or FLAT68III 1X, which requires an WIFD Extension Adapter\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":40203997970545,"sku":"WIL-T-GT-81GD-WIFD","price":3033.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/GT81_WIFD_Gold_Side.jpg?v=1776459043"},{"product_id":"william-optics-gt81-grand-turismo-refractor-with-wifd-focuser-space-gray-t-gt-81sg-wifd","title":"William Optics GT81 Grand Turismo Refractor with WIFD Focuser - Space Gray - T-GT-81SG-WIFD","description":"\u003ccenter\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/fSj8gG_PK1g\" height=\"315\" width=\"560\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/center\u003e\n\u003cp\u003eThe William Optics GT81 Triplet Refractor has a focal length of 478 mm and an f\/ratio of f\/5.9.  FPL-53 glass is used in the optical system to reduce chromatic aberration and produce sharp, high contrast images, whether using the GT81 for observing or astrophotography.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThis GT71 WIFD model is white with gray trim; it is also available in red or gold at the same price.  We may show other colors if the image itself is helpful.  Just remember that you will get a white\/space gray telescope, regardless of the colors you see on this page.  Thanks.\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cem\u003e\u003c\/em\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cspan\u003eWIFD Technology\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe William Optics Internal Focus Design, or WIFD, is an innovative and revolutionary design that combines a precision internal focusing mechanism with high quality optics, providing the ultimate apochromatic refractor for astrophotography. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDesigned from the ground up with the ability to handle the newest generation of large, heavy, high-resolution cooled cameras, the rock-solid optical tube assembly is uncompromised in quality. The movement of the focuser is integrated inside the main tube assembly, so there are no movements of a focuser drawtube visible from the outside.  The user can enjoy the benefits of a traditional two speed fine focuser, while not worrying about limitations typically found in traditional rear mounted focusers. \u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIncluded Accessories\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eGT81 f\/5.9 Tube Assembly - White with Space Gray Trim\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eDust Cover with Bahtinov Mask\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003e120 mm Saddle Handle Bar\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCamera Angle Rotator\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eM92 to M63 Adapter\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003e210 Vixen-Style Dovetail Plate\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eSoft Carry Case\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eZYGO Test Report\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"Highlights of the William Optics GT81 WIFD Refractor\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/GT81_Highlights_480x480.png?v=1686265273\" width=\"525\" height=\"677\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eLens Design:  APO Triplet with 1 FPL-53 Element\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eAperture:  81 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eFocal Length:  478 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eFocal Ratio:  f.5.9\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eFocuser:  WIFD\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eImage Circle:  45 mm (Full Frame)\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eRetracted Length:  421 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eExtended Length:  502 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eDew Shield Circumference:  382 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eDew Shield Diameter:  121 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eWeight of OTA Only:  3.58kg\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eWeight of OTA with Ring, Dovetail \u0026amp; Saddle:  4.565kg\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eColor:  White with Space Gray Trim\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eStrehl Ratio:  0.95+\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eTest Report:  Included\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eOptional Flattener:  FLAT6AIII 0.8X or FLAT68III 1X, which requires an WIFD Extension Adapter\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":40203998822513,"sku":"WIL-T-GT-81SG-WIFD","price":3033.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/GT81_WIFD_SG_Side.jpg?v=1776459004"},{"product_id":"william-optics-new-generation-finder-bracket-for-6x30-and-7x50-rings-only-no-shoe-c-fb-50mm","title":"William Optics New Generation - Finder Bracket for 6x30 and 7x50 (Rings Only \/ No Shoe) - C-FB 50mm","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eThis excellent finderscope bracket is easy to use, very convenient and a great value. It's a perfect addition to your telescope!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e It will work with William Optics 50mm finders, as well as with many other finders on the market.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThe Finder Shoe in the picture is for illustration purposes only.\u003c\/em\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":40252479570033,"sku":"WIL-C-FB-50MM","price":119.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/4994_1.jpg?v=1776459126"},{"product_id":"william-optics-new-generation-finder-bracket-for-6x30-and-7x50-rings-only-no-shoe-c-fb-50mm-preowned","title":"William Optics New Generation - Finder Bracket for 6x30 and 7x50 (Rings Only \/ No Shoe) - C-FB 50mm (Preowned)","description":"\u003cp\u003e\u003cem\u003eThis is a preowned item missing 2 teflon tips on the top screws. \u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eThis excellent finderscope bracket is easy to use, very convenient and a great value. It's a perfect addition to your telescope!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eIt will work with William Optics 50mm finders, as well as with many other finders on the market.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThe Finder Shoe in the picture is for illustration purposes only.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cbr\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":40327733182577,"sku":"USED101623","price":99.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/wyo-m-fb50-b-2.png?v=1776459221"},{"product_id":"william-optics-redcat-51-v3-wifd-apo-250mm-f-4-9-l-rc51rdiii","title":"William Optics Red Cat51 V3 - 51mm f\/4.9 Refractor with WIFD - L-RC51RDIII","description":"\u003cp\u003eDesigned to be the best, affordable, small, lightweight and fast Apochromatic refactor for astrophotography. The unique optical design includes the highest quality glass for the best possible color correction and flat large image circle. The result is a 51 mm objective lens, in a sleek Petzval design, for a full-frame image.\u003c\/p\u003e\n\u003cp\u003eAs seen on the RedCat 61 series, the patented William Optics Internal Focus Design (WIFD) makes its debut on the RedCat 51 series! The addition of the WIFD system brings something that RedCat 51 fans have all been waiting for: out-of-the box electronic focuser compatibility. This innovation from William Optics provides the ultimate Apochromatic refractor for astrophotography!\u003c\/p\u003e\n\u003cp\u003eThis internal focusing design does not shift the length of the OTA in any way, as the optics themselves move within the telescope as opposed to the camera moving. This prevents vignetting seen with traditional rear mounted focusers, and allows for a better redistribution of weight for improved balance of your optical assembly during your night of imaging. This WIFD apparatus offers the ability to automate your astrophotography set up with an electronic automatic focuser as well! When pairing this innovative technology with the high quality Petzval design of the RedCat series, William Optics delivers a telescope with outstanding astrophotography performance.\u003c\/p\u003e\n\u003cdiv class=\"table-wrapper\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length:\u003c\/td\u003e\n\u003ctd\u003e250mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter:\u003c\/td\u003e\n\u003ctd\u003e51mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture:\u003c\/td\u003e\n\u003ctd\u003ef\/4.9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser:\u003c\/td\u003e\n\u003ctd\u003eWIFD (WilliamOptics Internal Focus Design)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle:\u003c\/td\u003e\n\u003ctd\u003e48mm Full Frame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length:\u003c\/td\u003e\n\u003ctd\u003e298mm (Fully Extended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Weight:\u003c\/td\u003e\n\u003ctd\u003e1.77 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eIncludes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWilliam Optics 51mm Gen 3 RedCat\u003c\/li\u003e\n\u003cli\u003eDust Cover with Bahtinov Mask\u003c\/li\u003e\n\u003cli\u003e210 mm Vixen Dovetail\u003c\/li\u003e\n\u003cli\u003eMounting Ring\u003c\/li\u003e\n\u003cli\u003eSoft Carrying Case\u003c\/li\u003e\n\u003cli\u003eDew Shield\u003c\/li\u003e\n\u003cli\u003eTilt Adjuster\u003c\/li\u003e\n\u003cli\u003eCamera Angle Rotation Device\u003c\/li\u003e\n\u003cli\u003eSaddle Handle Bar\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"data item content\" id=\"additional\" data-role=\"content\" aria-labelledby=\"tab-label-additional\" role=\"tabpanel\" aria-hidden=\"true\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0224\/6770\/6960\/files\/Redcat-51-Diagram-01.webp?v=1712237337\" alt=\"\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"data item content\" data-role=\"content\" aria-labelledby=\"tab-label-additional\" role=\"tabpanel\" aria-hidden=\"true\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0224\/6770\/6960\/files\/Redcat-51-Diagram-02.webp?v=1712237337\" alt=\"\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"data item content\" data-role=\"content\" aria-labelledby=\"tab-label-additional\" role=\"tabpanel\" aria-hidden=\"true\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0224\/6770\/6960\/files\/Redcat-51-Diagram-03.webp?v=1712237337\" alt=\"\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!----\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":41211587526769,"sku":"WIL-L-RC51RDIII","price":1225.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/william-optics-telescope-william-optics-redcat-51-v3-wifd-apo-250mm-f-4-9-l-rc51iii-40883614089435.webp?v=1776459021"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/collections\/william-optics.png?v=1721698923","url":"https:\/\/khanscope.com\/en-fr\/collections\/william-optics.oembed?page=2","provider":"Khan Scope Centre","version":"1.0","type":"link"}