{"title":"Astronomy \u0026 Telescope Accessories","description":null,"products":[{"product_id":"universal-bahtinov-focus-mask","title":"Universal Bahtinov Focus Mask – Sharp Telescope Focus","description":"\u003cp\u003eNail telescope focus in seconds with this universal Bahtinov mask. The bright diffraction pattern eliminates guesswork — align the central spike and your focus is locked. Available in 60–180mm sizes, 3D printed in weather-resistant PETG to fit most refractors and SCTs.\u003c\/p\u003e\n\u003cp\u003eIt's the simplest way to get consistently sharp results for astrophotography and visual observing.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast, Repeatable Focus:\u003c\/strong\u003e Stop guessing and lock in perfect focus every time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlove-Friendly Design:\u003c\/strong\u003e Easy to handle, even on cold nights.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable \u0026amp; Weather-Resistant\u003c\/strong\u003e: 3D-printed in rugged PETG plastic that resists cold and dew without warping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Fit:\u003c\/strong\u003e Integrated slots let you use a strap (not included) to prevent it from falling off your scope.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cb\u003eHow to Choose Your Size:\u003c\/b\u003e Measure the outer diameter (OD) of your telescope's front end or dew shield. Select the closest size for your refractor or SCT.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eAvailable Sizes (OD):\u003c\/b\u003e 60mm, 80 mm, 100 mm, 120 mm, 140 mm, 160mm, 180mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e PETG Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eColor Options:\u003c\/b\u003e Black (Default), White, Grey. \u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOrigin:\u003c\/b\u003e 3D-printed to order. Ships from Canada. CUSMA compliant for tariff free shipping to the U.S \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Northern Foundry","offers":[{"title":"Black \/ 60mm","offer_id":44877709246662,"sku":"4487770924","price":19.99,"currency_code":"CAD","in_stock":true},{"title":"Black \/ 80 mm","offer_id":44862240522438,"sku":"4486224052","price":19.99,"currency_code":"CAD","in_stock":true},{"title":"Black \/ 100 mm","offer_id":44862240620742,"sku":"4486224062","price":22.99,"currency_code":"CAD","in_stock":true},{"title":"Black \/ 120mm","offer_id":44862240719046,"sku":"4486224071","price":24.99,"currency_code":"CAD","in_stock":true},{"title":"Black \/ 140mm","offer_id":44862240817350,"sku":"4486224081","price":27.99,"currency_code":"CAD","in_stock":true},{"title":"Black \/ 160mm","offer_id":44877709279430,"sku":"4487770927","price":30.99,"currency_code":"CAD","in_stock":true},{"title":"Black \/ 180mm","offer_id":44877709312198,"sku":"4487770931","price":33.99,"currency_code":"CAD","in_stock":true},{"title":"White \/ 60mm","offer_id":44877709344966,"sku":"4487770934","price":19.99,"currency_code":"CAD","in_stock":true},{"title":"White \/ 80 mm","offer_id":44862240555206,"sku":"4486224055","price":19.99,"currency_code":"CAD","in_stock":true},{"title":"White \/ 100 mm","offer_id":44862240653510,"sku":"4486224065","price":22.99,"currency_code":"CAD","in_stock":true},{"title":"White \/ 120mm","offer_id":44862240751814,"sku":"4486224075","price":24.99,"currency_code":"CAD","in_stock":true},{"title":"White \/ 140mm","offer_id":44862240850118,"sku":"4486224085","price":27.99,"currency_code":"CAD","in_stock":true},{"title":"White \/ 160mm","offer_id":44877709377734,"sku":"4487770937","price":30.99,"currency_code":"CAD","in_stock":true},{"title":"White \/ 180mm","offer_id":44877709410502,"sku":"4487770941","price":33.99,"currency_code":"CAD","in_stock":true},{"title":"Grey \/ 60mm","offer_id":44877709443270,"sku":"4487770944","price":19.99,"currency_code":"CAD","in_stock":true},{"title":"Grey \/ 80 mm","offer_id":44862240587974,"sku":"4486224058","price":19.99,"currency_code":"CAD","in_stock":true},{"title":"Grey \/ 100 mm","offer_id":44862240686278,"sku":"4486224068","price":22.99,"currency_code":"CAD","in_stock":true},{"title":"Grey \/ 120mm","offer_id":44862240784582,"sku":"4486224078","price":24.99,"currency_code":"CAD","in_stock":true},{"title":"Grey \/ 140mm","offer_id":44862240882886,"sku":"4486224088","price":27.99,"currency_code":"CAD","in_stock":true},{"title":"Grey \/ 160mm","offer_id":44877709476038,"sku":"4487770947","price":30.99,"currency_code":"CAD","in_stock":true},{"title":"Grey \/ 180mm","offer_id":44877709508806,"sku":"4487770950","price":33.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/3056\/7366\/files\/universal-bahtinov-focus-mask-achieve-razor-sharp-stars-in-seconds-3513230.png?v=1756728659"},{"product_id":"sky-watcher-classic-150p-eyepiece-adapter-plugs","title":"Sky-Watcher 150P\/200P Dust Cap Set – Eyepiece \u0026 Filter Plugs","description":"\u003cp\u003eProtect your Sky-Watcher Classic 150P or 200P optics with this complete 3D printed dust cap and plug set. Includes precision-fit push-fit covers for 1.25 inch and 2 inch eyepieces, focuser, and filter ports so dust, dirt, and moisture stay out between sessions. No threading means no cross-thread risk on delicate adapters. Perfect for amateur astronomers storing scopes at home or transporting to a dark sky site. 3D printed to order in durable PETG or PLA and shipped from Canada.\u003c\/p\u003e\n\u003cp data-start=\"760\" data-end=\"1043\"\u003eEach piece is designed for a snug, push-fit seal that’s safe for your scope and simple to remove when you’re ready to observe. Whether you’re storing your telescope between sessions or traveling to a dark sky site, this set ensures your optics stay clean and ready for sharp views.\u003c\/p\u003e\n\u003cp data-start=\"1045\" data-end=\"1333\"\u003e✅ Fits Sky-Watcher Classic 150P \u0026amp; 200P (and other scopes with 1.25″\/2″ standard fittings)\u003cbr data-start=\"1134\" data-end=\"1137\"\u003e✅ Four covers included — complete protection for eyepiece, focuser, and filter ports\u003cbr data-start=\"1221\" data-end=\"1224\"\u003e✅ Push-fit design — no threading, no cross-threading risk\u003cbr data-start=\"1281\" data-end=\"1284\"\u003e✅ Durable PETG\/PLA construction — built to last\u003cbr\u003e\u003cbr\u003eIncludes:\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1397\" data-end=\"1436\"\u003e1.25″ Filter Port Plug (M28.5)\u003c\/li\u003e\n\u003cli data-start=\"1437\" data-end=\"1471\"\u003e2″ Filter Port Plug (M48)\u003c\/li\u003e\n\u003cli data-start=\"1472\" data-end=\"1507\"\u003e1.25″ Focuser\/Diagonal Cap\u003c\/li\u003e\n\u003cli data-start=\"1508\" data-end=\"1540\"\u003e2″ Focuser\/Diagonal Cap\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Northern Foundry","offers":[{"title":"Complete Protection Cap Kit \/ Complete Protection Kit \/ Black","offer_id":44928439713990,"sku":"4492843971","price":24.99,"currency_code":"CAD","in_stock":true},{"title":"Complete Protection Cap Kit \/ Complete Protection Kit \/ Gray","offer_id":44962203402438,"sku":"4496220340","price":24.99,"currency_code":"CAD","in_stock":true},{"title":"Complete Protection Cap Kit \/ Complete Protection Kit \/ White","offer_id":44962203435206,"sku":"4496220343","price":24.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/3056\/7366\/files\/sky-watcher-150p200p-telescope-dust-cap-plug-set-125-2-eyepiece-focuser-and-filter-protectio-1665084.png?v=1757785148"},{"product_id":"sky-watcher-classic-150p-rear-dust-cover-disk","title":"Sky-Watcher 150P\/200P Dobsonian Rear Dust Cover Disk","description":"\u003cp\u003eSeal the open rear cell of your Sky-Watcher Classic 150P or 200P Dobsonian with this fitted dust cover disk. It straps securely over the back of the tube to keep dust, debris, and insects away from your primary mirror during storage and transport. A simple, durable upgrade for any Dob owner who wants cleaner optics between sessions. 3D printed to order in Canada, available in 150P (6 inch) and 200P (8 inch) sizes.\u003c\/p\u003e\n\u003cp data-start=\"549\" data-end=\"820\"\u003e✅ Designed for Sky-Watcher Classic Dobsonian telescopes\u003cbr data-start=\"604\" data-end=\"607\"\u003e✅ Blocks dust, dirt, and insects from reaching your mirror\u003cbr data-start=\"665\" data-end=\"668\"\u003e✅ Strap-slot design for a snug, secure fit (straps not included)\u003cbr data-start=\"710\" data-end=\"713\"\u003e✅ Durable 3D-printed construction for repeated use\u003cbr data-start=\"763\" data-end=\"766\"\u003e✅ Available in \u003cstrong data-start=\"781\" data-end=\"794\"\u003e150P (6″)\u003c\/strong\u003e and \u003cstrong data-start=\"799\" data-end=\"812\"\u003e200P (8″)\u003c\/strong\u003e sizes\u003c\/p\u003e\n\u003cp data-start=\"822\" data-end=\"937\"\u003eKeep your optics clean and your telescope ready to observe — whether stored at home or transported to dark skies.\u003c\/p\u003e","brand":"Northern Foundry","offers":[{"title":"Standard Rear Cover (with strap slots) \/ 150mm OD Rear Cover Disk with Strap holes","offer_id":44928679215302,"sku":"4492867921","price":17.99,"currency_code":"CAD","in_stock":true},{"title":"Standard Rear Cover (with strap slots) \/ 200mm OD Rear Cover Disk with Strap holes","offer_id":44928663290054,"sku":"4492866329","price":19.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/3056\/7366\/files\/sky-watcher-classic-telescope-rear-dust-cover-disk-150p-200p-1874494.png?v=1757785147"},{"product_id":"celestron-nexstar-8se-telescope-dust-cap-set-rear-port-eyepiece-covers-1-25-2","title":"Celestron NexStar 8SE Dust Cap Set – Rear Port + Eyepiece","description":"\u003cp\u003eProtect your Celestron NexStar 8SE from dust, dirt, and insects with this complete 3D printed cap set. 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We provide three slip-fit plugs (47.8 mm, 48.3 mm, 48.8 mm) so you’re guaranteed a reliable fit across all SCTs — no guessing required.\u003c\/li\u003e\n\u003cli data-start=\"901\" data-end=\"991\"\u003e\n\u003cstrong data-start=\"903\" data-end=\"925\"\u003e1.25″ Push-In Cap:\u003c\/strong\u003e Seals the focuser or diagonal when 1.25″ eyepieces are removed.\u003c\/li\u003e\n\u003cli data-start=\"992\" data-end=\"1068\"\u003e\n\u003cstrong data-start=\"994\" data-end=\"1013\"\u003e2″ Push-In Cap:\u003c\/strong\u003e Protects larger 2″ focusers, diagonals, or adapters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1070\" data-end=\"1349\"\u003e✅ Complete protection for your NexStar 8SE (and other SCTs with 1.25″\/2″ ports)\u003cbr data-start=\"1149\" data-end=\"1152\"\u003e✅ Covers both \u003cstrong data-start=\"1166\" data-end=\"1187\"\u003eeyepiece openings\u003c\/strong\u003e and the \u003cstrong data-start=\"1196\" data-end=\"1209\"\u003erear port\u003c\/strong\u003e\u003cbr data-start=\"1209\" data-end=\"1212\"\u003e✅ Durable 3D-printed construction, safe push-fit design (no threading, no cross-threading)\u003cbr data-start=\"1302\" data-end=\"1305\"\u003e✅ Lightweight, reusable, and easy to clean\u003c\/p\u003e\n\u003cp data-start=\"1351\" data-end=\"1443\"\u003eKeep your telescope free from dust, dirt, and insects — whether in storage or on the move.\u003c\/p\u003e","brand":"Northern Foundry","offers":[{"title":"Complete Telescope Cap Set","offer_id":44962317467846,"sku":"4496231746","price":27.99,"currency_code":"CAD","in_stock":true},{"title":"Rear SCT Plug Set Only","offer_id":44962317500614,"sku":"4496231750","price":16.99,"currency_code":"CAD","in_stock":true},{"title":"Eyepiece Cover Set","offer_id":44962317533382,"sku":"4496231753","price":13.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/3056\/7366\/files\/celestron-nexstar-8se-telescope-dust-cap-set-rear-port-eyepiece-covers-125-2-3695760.png?v=1757785147"}],"url":"https:\/\/northern-foundry.com\/collections\/cat-astronomy-telescope.oembed","provider":"Northern Foundry","version":"1.0","type":"link"}