{"title":"ZWO Accessories","description":null,"products":[{"product_id":"zwo-t2-to-eos-lens-adapter-ii","title":"ZWO T2 to EOS lens adapter II","description":"\u003ch2 style=\"position: relative; padding: 0px 0px 10px; line-height: 28px; color: rgb(238, 57, 57); margin: 0px; font-size: 20px; font-family: \" pt sans narrow sans-serif rgb normal background-color:=\"\" font-weight:=\"\"\u003e\u003c\/h2\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif font-size:=\"\"\u003eThis new ZWO-EOS-T2-? adapter has two parts (EOS-T2 adapter and 5mm length T2-extender), suitable for all ASI cameras\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif font-size:=\"\"\u003eThis new type is unadjustable. EOS-T2 support Canon EF lens only.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif font-size:=\"\"\u003eEOS-T2 adapter without T2-extender is suitable for 17.5mm backfocus distance ASI cameras such like Cooled cameras and ASI174 ASI294 ASI183 ASI1600 ASI533 ASI2600\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif font-size:=\"\"\u003eEOS-T2 adapter with the 5mm T2-extender, suitable for all 12.5mm backfocus ASI cameras such like ASI120 ASI224 ASI290 ASI178 ASI385.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif font-size:=\"\"\u003eYou can use 2\" IR-CUT filter with the adapter.\u003c\/p\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":44013338165359,"sku":"ZWO-EOS-T2-II","price":84.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ZWO-EOS-T2-1__55761.jpg?v=1766550781"},{"product_id":"t2-1-25-filter-adapter","title":"T2-1.25 Filter adapter","description":"\u003cspan style=\"font-family: \" open sans sans-serif justify rgb font-size:=\"\" text-align:=\"\" background-color:=\"\"\u003eThread the ZWO T2 to 1.25\" Filter Adapter into your T2-threaded ASI camera to allow use of standard 1.25\" filters. The internal thread is M28.5 x 0.6 and the external thread is T2. The four holes in the black anodized adapter let you screw it into the camera more easily.\u003c\/span\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":44013366902895,"sku":"T2-1.25-3","price":24.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/P1010199-460x460__58250.jpg?v=1766551165"},{"product_id":"desiccant-tablets-for-cooled-cameras","title":"Desiccant tablets","description":"\u003cspan style=\"color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e4 pieces of desiccant tablets for ZWO Cooled camera's.\u003c\/span\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":44013371850863,"sku":"Desiccant","price":29.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/desiccant-tablets-460x460__36067.jpg?v=1766551790"},{"product_id":"anti-dew-heater-strip","title":"Anti-dew heater strip","description":"\u003ch2 style=\"position: relative; padding: 0px 0px 10px; line-height: 28px; color: rgb(238, 57, 57); margin: 0px; font-size: 20px; font-family: \" pt sans narrow sans-serif rgb normal background-color:=\"\" font-weight:=\"\"\u003eProduct Description\u003c\/h2\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003cspan lang=\"SV\"\u003eThe anti-dew heater strip is used for anti-dew on the front window of the ASI cooled cameras.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eThis  kit includes the zip-tie, anti-dew heater strip , an Y power cord and two spacers \u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003ca href=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/Anti-dew-Kit-NEW.jpg\" style=\"background: transparent; color: rgb(238, 57, 57);\"\u003e\u003cimg class=\"alignnone wp-image-5908\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Anti-dew-Kit-NEW-1024x1024_3d67aac6-b1af-4671-a281-0d1dbb63a33f.jpg?v=1766551958\" alt=\"Anti-dew-Kit-NEW\" width=\"553\" height=\"553\" style=\"border: 0px; max-width: 100%; height: auto; display: block;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eThe thickness of the anti-dew heater strip is 0.2~0.3mm.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eThe  Y  power cord is designed to connect in-line with the cooler power supply for convenience.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eThe thickness of the spacers is 0.3mm and 0.5mm. They are used for aligning the camera and EFW.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eAnd we recommends 12V at 0.35A  DC adapter \u003cspan lang=\"SV\"\u003ewhere the heating power on the strip is ~4.2 watts. You can use one and same power cord to power both the fan and heater simultanously, but make sure not to exceed recommended amount of Ampere.\u003c\/span\u003e\u003c\/p\u003e\u003ch3 style=\"position: relative; padding: 0px 0px 10px; line-height: 28px; color: rgb(238, 57, 57); margin: 0px; font-size: 20px; font-family: \" pt sans narrow sans-serif rgb normal background-color:=\"\" font-weight:=\"\"\u003eHow to use it?\u003c\/h3\u003e\u003col style=\"margin: 0px 0px 20px 17px; padding: 0px; list-style-position: initial; list-style-image: initial; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003cli\u003eTear out the protective film on adhesive tape\u003c\/li\u003e\u003c\/ol\u003e\u003cdiv style=\"color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003ca href=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/Anti-dew-theback0.jpg\" style=\"background: transparent; color: rgb(238, 57, 57);\"\u003e\u003cimg class=\"alignnone wp-image-5753\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Anti-dew-theback0-1024x683_9b64010e-ad16-48ea-953e-d7fb8a5c265c.jpg?v=1766551959\" alt=\"Anti-dew-theback0\" width=\"591\" height=\"395\" style=\"border: 0px; max-width: 100%; height: auto; display: block;\"\u003e\u003c\/a\u003e\u003c\/div\u003e\u003cdiv style=\"color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e2. Put the anti-dew heater strip on the front facing of the camera and make sure the black cable is in the right position (\u003cspan lang=\"SV\"\u003elining next to the DC plug at the rear end\u003c\/span\u003e)\u003c\/div\u003e\u003ch3 style=\"position: relative; padding: 0px 0px 10px; line-height: 28px; color: rgb(238, 57, 57); margin: 0px; font-size: 20px; font-family: \" pt sans narrow sans-serif rgb normal background-color:=\"\" font-weight:=\"\"\u003e\u003ca href=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/Anti-dew-step2.jpg\" style=\"background: transparent; color: rgb(238, 57, 57); text-decoration: none !important; opacity: 1;\"\u003e\u003cimg class=\"alignnone wp-image-5746\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Anti-dew-step2-1024x819_a3946581-108a-403a-8d30-b52bf8b20079.jpg?v=1766551961\" alt=\"Anti-dew-step2\" width=\"479\" height=\"383\" style=\"border: 0px; max-width: 100%; height: auto; display: block;\"\u003e\u003c\/a\u003e\u003c\/h3\u003e\u003ch3 style=\"position: relative; padding: 0px 0px 10px; line-height: 28px; color: rgb(238, 57, 57); margin: 0px; font-size: 20px; font-family: \" pt sans narrow sans-serif rgb normal background-color:=\"\" font-weight:=\"\"\u003e\u003ca href=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/Anti-dew-step2.2.jpg\" style=\"background: transparent; color: rgb(238, 57, 57); text-decoration: none !important; opacity: 1;\"\u003e\u003cimg class=\"wp-image-5754 aligncenter\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Anti-dew-step2.2-1024x1024_0647773a-bfaa-49e0-8319-27f0b8d5ee8a.jpg?v=1766551963\" alt=\"Anti-dew-step2.2\" width=\"359\" height=\"359\" style=\"border: 0px; display: block; text-align: center; margin: auto; height: auto; max-width: 100%; padding: 0px; background: none;\"\u003e\u003c\/a\u003e\u003c\/h3\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e3. \u003cspan lang=\"SV\"\u003eTie the black cable with a zip-tie on the camera body\u003c\/span\u003e.\u003ca href=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/Anti-dew-step4.jpg\" style=\"background: transparent; color: rgb(238, 57, 57);\"\u003e\u003cimg class=\"alignnone wp-image-5748\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Anti-dew-step4-1024x1024_e23086a2-4e0c-4077-938a-a7b54af91b0e.jpg?v=1766551964\" alt=\"Anti-dew-step4\" width=\"451\" height=\"451\" style=\"border: 0px; max-width: 100%; height: auto; display: block;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e4. Plug in the power cord, then everything is done.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003ca href=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/Anti-dew-step5.jpg\" style=\"background: transparent; color: rgb(238, 57, 57);\"\u003e\u003cimg class=\"wp-image-5749 aligncenter\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Anti-dew-step5-1024x1024_125263e4-2959-4e6c-8936-da9a06bad644.jpg?v=1766551966\" alt=\"Anti-dew-step5\" width=\"412\" height=\"412\" style=\"border: 0px; display: block; text-align: center; margin: auto; height: auto; max-width: 100%; padding: 0px; background: none;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003ca href=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/Anti-dew-step6.1.jpg\" style=\"background: transparent; color: rgb(238, 57, 57);\"\u003e\u003cimg class=\"alignnone wp-image-5755\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Anti-dew-step6.1-1024x1024_71a95610-0654-415f-b672-e01d3c6f0cc0.jpg?v=1766551968\" alt=\"Anti-dew-step6.1\" width=\"537\" height=\"537\" style=\"border: 0px; max-width: 100%; height: auto; display: block;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e \u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003cspan lang=\"SV\"\u003eNow you should be dew-free while shooting with the camera.\u003c\/span\u003e\u003c\/p\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":44013374865519,"sku":"ZWO-DEW","price":29.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Anti-dew-Kit-NEW-460x460__45887.jpg?v=1766551970"},{"product_id":"holder-ring-for-asi-cooled-cameras-86mm-diameter","title":"Holder Ring for ASI Cooled Cameras(86mm diameter)","description":"\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eZWO Holder Ring for ZWO ASI PRO COOLED CAMERAS with 86mm diameter.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eCurrently compatible with the following ZWO cameras: ASI094, ASI128 and ASI071 Pro cameras\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":44013458096239,"sku":"RING-86","price":70.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Ring-86__10818.png?v=1766553579"},{"product_id":"holder-ring-for-asi-cooled-cameras-78mm-diameter","title":"Holder Ring for ASI Cooled Cameras(78mm diameter)","description":"\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eZWO Holder Ring for ZWO ASI PRO COOLED CAMERAS with appr 78mm diameter.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003cstrong\u003eCurrently compatible with the following ZWO cameras:\u003c\/strong\u003e ASI1600 Pro, ASI183 Pro , ASI294 Pro, ASI178 Cooled cameras, ASI174 Cooled cameras and ASI385MC cooled cameras.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003cstrong\u003eNOTICE:\u003c\/strong\u003e ASI094, ASI128 \u0026amp; ASI071 cameras are required 86mm holder ring.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":44013458129007,"sku":"RING-78","price":70.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Ring-86__21729.png?v=1766553584"},{"product_id":"new-t2-tilter","title":"New T2 Tilter","description":"\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eThe New T2 tilter adds multiple screw holes to help connect to ZWO EFW (compatible to 2” EFW filter wheel).\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb center font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/New-ZWO-T2-tilter-1_4d829ff2-d468-4a26-bf94-32858d6f5d46.jpg?v=1766557344\" style=\"background: transparent; color: rgb(238, 57, 57); text-decoration-line: none; outline: 0px;\"\u003e\u003cimg class=\"alignnone size-full wp-image-21006\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/New-ZWO-T2-tilter-1_4d829ff2-d468-4a26-bf94-32858d6f5d46.jpg?v=1766557344\" alt=\"New ZWO T2 tilter-1\" width=\"648\" height=\"441\" style=\"border: 0px; max-width: 100%; height: auto; display: block;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb center font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp style=\"text-align: left; margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eCompatable with all ASI cameras expect the ASI071, ASI2600, ASI6200\u003c\/p\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":44013595918447,"sku":"ZWO-T2-Tilter-II","price":68.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/New-ZWO-T2-tilter-2__92614.jpg?v=1766557345"},{"product_id":"holder-ring-for-asi-cooled-cameras-90mm-diameter","title":"Holder Ring for ASI Cooled Cameras(90mm diameter)","description":"\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eZWO Holder Ring for ZWO ASI PRO COOLED CAMERAS with appr 90mm diameter.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003cstrong\u003eCurrently compatible with the following ZWO cameras:\u003c\/strong\u003e \u003cstrong\u003eCurrently compatible with ASI 2600MC Pro and ASI6200MM\/MC Pro cameras.\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003cstrong\u003eNOTICE:\u003c\/strong\u003e ASI094, ASI128 \u0026amp; ASI071 cameras are required 86mm holder ring.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":44013599391855,"sku":"RING-90","price":84.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Ring-86__19634.png?v=1766557409"},{"product_id":"zwo-m68-sensor-tilt-plate-for-6200mc-mm-pro-cameras","title":"ZWO M68 sensor tilt plate for 6200MC\/MM Pro cameras","description":"\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eM68 sensor tilt plate (5mm) is independently developed by ZWO and specially made to match with the full-frame cooled camera ZWO ASI6200MM\/MC Pro.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eYou are encouraged to use it with ZWO 2inch EFW and ZWO M68 OAG and mount them on the M68-thread telescope side.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eThe original M54 sensor tilt plate of ASI6200 can only be used to connect with the M42\/M48 thread telescope side for now.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eWhile this new M68 sensor tilter plate can be used to connect with the M68 thread telescope side.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003ch2 style=\"position: relative; padding: 0px 0px 10px; line-height: 28px; margin: 0px; font-size: 20px; font-family: \" pt sans narrow sans-serif rgb normal background-color:=\"\" font-weight:=\"\"\u003eThe best solution of 55mm back focus length\u003c\/h2\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003cimg class=\"aligncenter size-full wp-image-21308\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6200-55mm-backfocus-solution-5-2_b47f1fa6-5db9-45f7-a545-8c05035c6c72.jpg?v=1766559831\" alt=\"6200-55mm-backfocus-solution-5 (2)\" width=\"1000\" height=\"795\" style=\"border: 0px; display: block; text-align: center; margin: auto; height: auto; max-width: 100%; padding: 0px; background: none;\"\u003e\u003c\/p\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":44013690847343,"sku":"ZWO-M68-TILT","price":41.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/M68-Sensor-Tilt-Adapter-1__29474.jpg?v=1766559833"},{"product_id":"zwo-m54-adapter-for-replacing-efw-spacing","title":"ZWO M54 Adapter for Replacing EFW Spacing","description":"\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003eThe ZWO M54 adapter is an adapter designed specifically for ASI cooled cameras. Instead of using the 20mm ZWO EFW, you can directly connect the adapter to OAG-L with the addition of 5mm sensor tilt adapter to reach 55mm back focus.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003eIt has a thickness of 15mm. You can also insert an ZWO 2”filter into it.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003ca href=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/0223.jpg\" style=\"background: transparent; color: rgb(238, 57, 57);\"\u003e\u003cimg decoding=\"async\" class=\"wp-image-37309 size-medium aligncenter\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/0223-300x300_924228a8-a123-4dc9-8f2b-7dfbcefb19ec.jpg?v=1766564940\" alt=\"02\" width=\"300\" height=\"300\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/0223-300x300_924228a8-a123-4dc9-8f2b-7dfbcefb19ec.jpg?v=1766564940 300w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/0223-150x150.jpg 150w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/0223-180x180.jpg 180w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/0223-600x600.jpg 600w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/0223.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" style=\"height: auto; max-width: 100%; border: 0px; clear: both; display: block; text-align: center; margin: auto; padding: 0px; background: none;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003ca href=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/0128.jpg\" style=\"background: transparent; color: rgb(238, 57, 57);\"\u003e\u003cimg decoding=\"async\" loading=\"lazy\" class=\"wp-image-37308 size-medium aligncenter\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/0128-300x300_b4f32dfa-e32e-4624-91b9-c3e8ff5e4cdf.jpg?v=1766564942\" alt=\"01\" width=\"300\" height=\"300\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/0128-300x300_b4f32dfa-e32e-4624-91b9-c3e8ff5e4cdf.jpg?v=1766564942 300w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/0128-150x150.jpg 150w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/0128-180x180.jpg 180w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/0128-600x600.jpg 600w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/0128.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" style=\"height: auto; max-width: 100%; border: 0px; clear: both; display: block; text-align: center; margin: auto; padding: 0px; background: none;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eThe adapter supports 2” filters from third-party. Below are the requirements for the filters.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003cimg decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-37316\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/03-Requirements-for-filter-from-third-party_0047648e-ed66-481b-a0a3-a199f9d960df.jpg?v=1766564944\" alt=\"03 Requirements for filter from third party\" width=\"1024\" height=\"644\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/03-Requirements-for-filter-from-third-party_0047648e-ed66-481b-a0a3-a199f9d960df.jpg?v=1766564944 1024w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/03-Requirements-for-filter-from-third-party-300x189.jpg 300w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" style=\"height: auto; max-width: 100%; border: 0px; clear: both; display: block; text-align: center; margin: auto; padding: 0px; background: none;\"\u003e\u003c\/p\u003e\u003ch3 style=\"position: relative; padding: 0px 0px 10px; line-height: 28px; color: rgb(238, 57, 57); margin: 0px; font-size: 20px; font-family: \" pt sans narrow sans-serif rgb justify normal background-color:=\"\" text-align:=\"\" font-weight:=\"\"\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/0414_b780eaf0-970c-4a84-883d-b9dd80ac52ed.jpg?v=1766564945\" style=\"background: transparent; color: rgb(238, 57, 57); opacity: 1; text-decoration-line: none !important;\"\u003e\u003cimg decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-37311\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/0414_b780eaf0-970c-4a84-883d-b9dd80ac52ed.jpg?v=1766564945\" alt=\"04\" width=\"800\" height=\"800\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/0414_b780eaf0-970c-4a84-883d-b9dd80ac52ed.jpg?v=1766564945 800w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/0414-150x150.jpg 150w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/0414-300x300.jpg 300w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/0414-180x180.jpg 180w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/0414-600x600.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" style=\"height: auto; max-width: 100%; border: 0px; clear: both; display: block; text-align: center; margin: auto; padding: 0px; background: none;\"\u003e\u003c\/a\u003eMechanical Diagram\u003c\/h3\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/05-Mechanical-Diagram_b5f77d09-2c2f-49df-8a2e-32a84738116c.jpg?v=1766564947\" style=\"background: transparent; color: rgb(238, 57, 57);\"\u003e\u003cimg decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-37317\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/05-Mechanical-Diagram_b5f77d09-2c2f-49df-8a2e-32a84738116c.jpg?v=1766564947\" alt=\"05 Mechanical Diagram\" width=\"865\" height=\"664\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/05-Mechanical-Diagram_b5f77d09-2c2f-49df-8a2e-32a84738116c.jpg?v=1766564947 865w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/05-Mechanical-Diagram-300x230.jpg 300w\" sizes=\"(max-width: 865px) 100vw, 865px\" style=\"height: auto; max-width: 100%; border: 0px; clear: both; display: block; text-align: center; margin: auto; padding: 0px; background: none;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003ch3 style=\"position: relative; padding: 0px 0px 10px; line-height: 28px; color: rgb(238, 57, 57); margin: 0px; font-size: 20px; font-family: \" pt sans narrow sans-serif rgb justify normal background-color:=\"\" text-align:=\"\" font-weight:=\"\"\u003eWhat is in the box?\u003c\/h3\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/E9_85_8D_E4_BB_B61_7e44078b-d1f4-4da7-99c3-96d8faf3d565.jpg?v=1766564949\" style=\"background: transparent; color: rgb(238, 57, 57);\"\u003e\u003cimg decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-37312\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/E9_85_8D_E4_BB_B61_7e44078b-d1f4-4da7-99c3-96d8faf3d565.jpg?v=1766564949\" alt=\"??\" width=\"1000\" height=\"600\" srcset=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/??1.jpg 1000w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/??1-300x180.jpg 300w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" style=\"height: auto; max-width: 100%; border: 0px; clear: both; display: block; text-align: center; margin: auto; padding: 0px; background: none;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003col style=\"box-sizing: border-box; margin: 0px 0px 20px 17px; padding: 0px; list-style-position: initial; list-style-image: initial; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\n\u003cli\u003eM54 adapter (15mm)\u003c\/li\u003e\n\u003cli\u003eM54M-M48F adapter\u003c\/li\u003e\n\u003cli\u003e5-L8 screws * 8\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3 style=\"position: relative; padding: 0px 0px 10px; line-height: 28px; color: rgb(238, 57, 57); margin: 0px; font-size: 20px; font-family: \" pt sans narrow sans-serif rgb justify normal background-color:=\"\" text-align:=\"\" font-weight:=\"\"\u003eThe best solution of 55mm back focus length\u003c\/h3\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003ePlease note the following solutions are premised on that you are using the OAG-L with the cooled camera.\u003c\/p\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/07-EN-The-best-solution-of-55mm-back-focus-length_58c7133d-50b1-420d-afcb-d8b9bb498441.jpg?v=1766564950\" style=\"background: transparent; color: rgb(238, 57, 57);\"\u003e\u003cimg decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-37318\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/07-EN-The-best-solution-of-55mm-back-focus-length_58c7133d-50b1-420d-afcb-d8b9bb498441.jpg?v=1766564950\" alt=\"07 EN The best solution of 55mm back focus length\" width=\"1000\" height=\"2104\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/07-EN-The-best-solution-of-55mm-back-focus-length_58c7133d-50b1-420d-afcb-d8b9bb498441.jpg?v=1766564950 1000w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/07-EN-The-best-solution-of-55mm-back-focus-length-143x300.jpg 143w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/07-EN-The-best-solution-of-55mm-back-focus-length-487x1024.jpg 487w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" style=\"height: auto; max-width: 100%; border: 0px; clear: both; display: block; text-align: center; margin: auto; padding: 0px; background: none;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003ch3 style=\"position: relative; padding: 0px 0px 10px; line-height: 28px; color: rgb(238, 57, 57); margin: 0px; font-size: 20px; font-family: \" pt sans narrow sans-serif rgb justify normal background-color:=\"\" text-align:=\"\" font-weight:=\"\"\u003eDetailed Connecting Guide\u003c\/h3\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003eConnecting with ASI2600MM Pro as the example.\u003c\/p\u003e\u003col style=\"box-sizing: border-box; margin: 0px 0px 20px 17px; padding: 0px; list-style-position: initial; list-style-image: initial; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003cli\u003eFix the filter to M54M-M48F adapter via threads.\u003c\/li\u003e\u003c\/ol\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/E8_BF_9E_E6_8E_A5_E5_9B_BE2_01_5162f0fd-942d-4b31-8bc6-9cfb0cd665cb.jpg?v=1766564952\" style=\"background: transparent; color: rgb(238, 57, 57);\"\u003e\u003cimg decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-37313\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/E8_BF_9E_E6_8E_A5_E5_9B_BE2_01_5162f0fd-942d-4b31-8bc6-9cfb0cd665cb.jpg?v=1766564952\" alt=\"???2_01\" width=\"750\" height=\"400\" srcset=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/???2_01.jpg 750w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/???2_01-300x160.jpg 300w\" sizes=\"(max-width: 750px) 100vw, 750px\" style=\"height: auto; max-width: 100%; border: 0px; clear: both; display: block; text-align: center; margin: auto; padding: 0px; background: none;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003col start=\"2\" style=\"box-sizing: border-box; margin: 0px 0px 20px 17px; padding: 0px; list-style-position: initial; list-style-image: initial; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003cli\u003eFix the filter unit to the M54 adapter.\u003c\/li\u003e\u003c\/ol\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/E8_BF_9E_E6_8E_A5_E5_9B_BE2_02_70d586c9-1e08-4c1b-a4d6-0c5d7a2d7fa9.jpg?v=1766564954\" style=\"background: transparent; color: rgb(238, 57, 57);\"\u003e\u003cimg decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-37314\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/E8_BF_9E_E6_8E_A5_E5_9B_BE2_02_70d586c9-1e08-4c1b-a4d6-0c5d7a2d7fa9.jpg?v=1766564954\" alt=\"???2_02\" width=\"750\" height=\"400\" srcset=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/???2_02.jpg 750w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/???2_02-300x160.jpg 300w\" sizes=\"(max-width: 750px) 100vw, 750px\" style=\"height: auto; max-width: 100%; border: 0px; clear: both; display: block; text-align: center; margin: auto; padding: 0px; background: none;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003col start=\"3\" style=\"box-sizing: border-box; margin: 0px 0px 20px 17px; padding: 0px; list-style-position: initial; list-style-image: initial; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003cli\u003eHere we have an ASI2600MM Pro camera and an adapter unit. The four holes circled in red in the sensor tilt plate are the ones you are going to use to fix the adapter unit to the camera.\u003c\/li\u003e\u003c\/ol\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003cimg decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-37319\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/10-connect-with-2600-circles_f7448bf4-0935-4c7e-a7af-47d6d604092b.jpg?v=1766564955\" alt=\"10 connect with 2600 (circles)\" width=\"750\" height=\"400\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/10-connect-with-2600-circles_f7448bf4-0935-4c7e-a7af-47d6d604092b.jpg?v=1766564955 750w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/10-connect-with-2600-circles-300x160.jpg 300w\" sizes=\"(max-width: 750px) 100vw, 750px\" style=\"height: auto; max-width: 100%; border: 0px; clear: both; display: block; text-align: center; margin: auto; padding: 0px; background: none;\"\u003e\u003c\/p\u003e\u003col start=\"4\" style=\"box-sizing: border-box; margin: 0px 0px 20px 17px; padding: 0px; list-style-position: initial; list-style-image: initial; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003cli\u003eTake 4 screws from the package, and use them to fix the M54 adapter to the camera.\u003c\/li\u003e\u003c\/ol\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/11-connect-with-2600_8c979c61-5f5b-4111-ad9f-ff3cda9e5750.jpg?v=1766564957\" style=\"background: transparent; color: rgb(238, 57, 57);\"\u003e\u003cimg decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-37320\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/11-connect-with-2600_8c979c61-5f5b-4111-ad9f-ff3cda9e5750.jpg?v=1766564957\" alt=\"11 connect with 2600\" width=\"750\" height=\"400\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/11-connect-with-2600_8c979c61-5f5b-4111-ad9f-ff3cda9e5750.jpg?v=1766564957 750w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/11-connect-with-2600-300x160.jpg 300w\" sizes=\"(max-width: 750px) 100vw, 750px\" style=\"height: auto; max-width: 100%; border: 0px; clear: both; display: block; text-align: center; margin: auto; padding: 0px; background: none;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003col start=\"5\" style=\"box-sizing: border-box; margin: 0px 0px 20px 17px; padding: 0px; list-style-position: initial; list-style-image: initial; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003cli\u003eRemove the M48 plate from OAG-L.\u003c\/li\u003e\u003c\/ol\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/12-connect-with-2600_f8acab6f-7945-4fe1-a856-675d4ea90f60.jpg?v=1766564958\" style=\"background: transparent; color: rgb(238, 57, 57);\"\u003e\u003cimg decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-37321\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/12-connect-with-2600_f8acab6f-7945-4fe1-a856-675d4ea90f60.jpg?v=1766564958\" alt=\"12 connect with 2600\" width=\"750\" height=\"400\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/12-connect-with-2600_f8acab6f-7945-4fe1-a856-675d4ea90f60.jpg?v=1766564958 750w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/12-connect-with-2600-300x160.jpg 300w\" sizes=\"(max-width: 750px) 100vw, 750px\" style=\"height: auto; max-width: 100%; border: 0px; clear: both; display: block; text-align: center; margin: auto; padding: 0px; background: none;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003col start=\"6\" style=\"box-sizing: border-box; margin: 0px 0px 20px 17px; padding: 0px; list-style-position: initial; list-style-image: initial; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003cli\u003eAlign the hole positions in OAG-L to the smaller holes in the adapter, then use the rest 4 screws to fix OAG-L to the M54 adapter.\u003c\/li\u003e\u003c\/ol\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/13-connect-with-2600_a5fa2594-1f5d-4cb2-8d54-36449675d454.jpg?v=1766564960\" style=\"background: transparent; color: rgb(238, 57, 57);\"\u003e\u003cimg decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-37322\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/13-connect-with-2600_a5fa2594-1f5d-4cb2-8d54-36449675d454.jpg?v=1766564960\" alt=\"13 connect with 2600\" width=\"750\" height=\"400\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/13-connect-with-2600_a5fa2594-1f5d-4cb2-8d54-36449675d454.jpg?v=1766564960 750w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/13-connect-with-2600-300x160.jpg 300w\" sizes=\"(max-width: 750px) 100vw, 750px\" style=\"height: auto; max-width: 100%; border: 0px; clear: both; display: block; text-align: center; margin: auto; padding: 0px; background: none;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003col start=\"7\" style=\"box-sizing: border-box; margin: 0px 0px 20px 17px; padding: 0px; list-style-position: initial; list-style-image: initial; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003cli\u003eReinstall the M48 plate on OAG-L.\u003c\/li\u003e\u003c\/ol\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/14-connect-with-2600_2efc1935-bf56-4b8d-aac3-85bf4e31f625.jpg?v=1766564961\" style=\"background: transparent; color: rgb(238, 57, 57);\"\u003e\u003cimg decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-37323\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/14-connect-with-2600_2efc1935-bf56-4b8d-aac3-85bf4e31f625.jpg?v=1766564961\" alt=\"14 connect with 2600\" width=\"750\" height=\"400\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/14-connect-with-2600_2efc1935-bf56-4b8d-aac3-85bf4e31f625.jpg?v=1766564961 750w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/14-connect-with-2600-300x160.jpg 300w\" sizes=\"(max-width: 750px) 100vw, 750px\" style=\"height: auto; max-width: 100%; border: 0px; clear: both; display: block; text-align: center; margin: auto; padding: 0px; background: none;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003col start=\"8\" style=\"box-sizing: border-box; margin: 0px 0px 20px 17px; padding: 0px; list-style-position: initial; list-style-image: initial; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003cli\u003eWork done!\u003c\/li\u003e\u003c\/ol\u003e\u003cp style=\"margin: 0px; zoom: 1; padding: 0px 0px 16px; color: rgb(32, 32, 32); font-family: \" pt sans sans-serif rgb justify font-size:=\"\" background-color:=\"\" text-align:=\"\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/15-connect-with-2600_fbc7d43d-7f25-4c24-b0a8-7b6bbd16ee03.jpg?v=1766564963\" style=\"background: transparent; color: rgb(238, 57, 57);\"\u003e\u003cimg decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-37324\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/15-connect-with-2600_fbc7d43d-7f25-4c24-b0a8-7b6bbd16ee03.jpg?v=1766564963\" alt=\"15 connect with 2600\" width=\"750\" height=\"400\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/15-connect-with-2600_fbc7d43d-7f25-4c24-b0a8-7b6bbd16ee03.jpg?v=1766564963 750w, https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/15-connect-with-2600-300x160.jpg 300w\" sizes=\"(max-width: 750px) 100vw, 750px\" style=\"height: auto; max-width: 100%; border: 0px; clear: both; display: block; text-align: center; margin: auto; padding: 0px; background: none;\"\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":44013864484975,"sku":"ZWO-D70-M54F","price":49.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/0223-460x460__17811.jpg?v=1766564965"},{"product_id":"sony-adapter-for-asi-cameras","title":"Sony Adapter for ASI Cameras","description":"\u003cp\u003eCan be used to connect Sony NEX lens and ASI cameras with small sensor formats, such as ASI1600, ASI294, ASI183, ASI174, ASI432 and ASI585.\u003cbr\u003eOnly support manual lenses supported, not compatible with automatic lenses.\u003c\/p\u003e\n\u003cp\u003eE-mount lenses with 18.5mm back focus length are supported (Only manual lenses).\u003c\/p\u003e\n\u003cdiv class=\"wp-block-image\"\u003e\n\u003cfigure class=\"aligncenter size-large\"\u003e\u003cimg class=\"wp-image-5682\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/80eef612e8f4f637dfd5f323aff7cdc5-1024x512_7294e695-c0ef-41b1-b4bb-3cde87b5a505.jpg?v=1766570148\" sizes=\"(max-width: 1024px) 100vw, 1024px\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/80eef612e8f4f637dfd5f323aff7cdc5-1024x512_7294e695-c0ef-41b1-b4bb-3cde87b5a505.jpg?v=1766570148 1024w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/80eef612e8f4f637dfd5f323aff7cdc5-730x365.jpg 730w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/80eef612e8f4f637dfd5f323aff7cdc5-300x150.jpg 300w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/80eef612e8f4f637dfd5f323aff7cdc5-768x384.jpg 768w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/80eef612e8f4f637dfd5f323aff7cdc5-800x400.jpg 800w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/80eef612e8f4f637dfd5f323aff7cdc5-290x145.jpg 290w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/80eef612e8f4f637dfd5f323aff7cdc5.jpg 1200w\" alt=\"\" width=\"1024\" height=\"512\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wp-block-image\"\u003e\n\u003cfigure class=\"aligncenter size-large\"\u003e\u003cimg class=\"wp-image-5683\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f318be1ccfc18fbc6f1caf0f3293987a-1024x512_ea2f0ca4-7524-4789-a6d1-dc0bc960ec25.jpg?v=1766570151\" sizes=\"(max-width: 1024px) 100vw, 1024px\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f318be1ccfc18fbc6f1caf0f3293987a-1024x512_ea2f0ca4-7524-4789-a6d1-dc0bc960ec25.jpg?v=1766570151 1024w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/f318be1ccfc18fbc6f1caf0f3293987a-730x365.jpg 730w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/f318be1ccfc18fbc6f1caf0f3293987a-300x150.jpg 300w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/f318be1ccfc18fbc6f1caf0f3293987a-768x384.jpg 768w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/f318be1ccfc18fbc6f1caf0f3293987a-800x400.jpg 800w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/f318be1ccfc18fbc6f1caf0f3293987a-290x145.jpg 290w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/f318be1ccfc18fbc6f1caf0f3293987a.jpg 1200w\" alt=\"\" width=\"1024\" height=\"512\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wp-block-image\"\u003e\n\u003cfigure class=\"aligncenter size-large\"\u003e\u003cimg class=\"wp-image-5684\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/226d48210f4df08e82b229bda50890e8-1024x512_8823d5a0-2b7e-43ac-9432-8222690d370b.jpg?v=1766570153\" sizes=\"(max-width: 1024px) 100vw, 1024px\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/226d48210f4df08e82b229bda50890e8-1024x512_8823d5a0-2b7e-43ac-9432-8222690d370b.jpg?v=1766570153 1024w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/226d48210f4df08e82b229bda50890e8-730x365.jpg 730w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/226d48210f4df08e82b229bda50890e8-300x150.jpg 300w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/226d48210f4df08e82b229bda50890e8-768x384.jpg 768w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/226d48210f4df08e82b229bda50890e8-800x400.jpg 800w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/226d48210f4df08e82b229bda50890e8-290x145.jpg 290w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/226d48210f4df08e82b229bda50890e8.jpg 1200w\" alt=\"\" width=\"1024\" height=\"512\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wp-block-image\"\u003e\n\u003cfigure class=\"aligncenter size-large\"\u003e\u003cimg class=\"wp-image-5680\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/3c41191c8d80340762bdfeaf15a34cc4-1024x597_18482bc1-4999-4ff5-99b2-77277b099747.jpg?v=1766570155\" sizes=\"(max-width: 1024px) 100vw, 1024px\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/3c41191c8d80340762bdfeaf15a34cc4-1024x597_18482bc1-4999-4ff5-99b2-77277b099747.jpg?v=1766570155 1024w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/3c41191c8d80340762bdfeaf15a34cc4-730x426.jpg 730w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/3c41191c8d80340762bdfeaf15a34cc4-300x175.jpg 300w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/3c41191c8d80340762bdfeaf15a34cc4-768x448.jpg 768w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/3c41191c8d80340762bdfeaf15a34cc4.jpg 1200w\" alt=\"\" width=\"1024\" height=\"597\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wp-block-image\"\u003e\n\u003cfigure class=\"aligncenter size-large\"\u003e\u003cimg class=\"wp-image-5681\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1fa2520c62d1fd60a8fd238ac4071b6f-1024x597_33b75660-0e35-4d23-82e5-314489eb001f.png?v=1766570158\" sizes=\"(max-width: 1024px) 100vw, 1024px\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1fa2520c62d1fd60a8fd238ac4071b6f-1024x597_33b75660-0e35-4d23-82e5-314489eb001f.png?v=1766570158 1024w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/1fa2520c62d1fd60a8fd238ac4071b6f-730x426.png 730w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/1fa2520c62d1fd60a8fd238ac4071b6f-300x175.png 300w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/1fa2520c62d1fd60a8fd238ac4071b6f-768x448.png 768w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/1fa2520c62d1fd60a8fd238ac4071b6f.png 1200w\" alt=\"\" width=\"1024\" height=\"597\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":44014080917615,"sku":"ZWO-Sony-Adp","price":50.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Sony_adpater__01773.jpg?v=1766570160"},{"product_id":"zwo-t2-to-m43-adapter","title":"ZWO T2 to M43 adapter","description":"\u003cp\u003eT2 to M43 adapter, suitable for  ASI1600 ASI294 ASI183 ASI174 series and ASI533MC-P cameras.\u003c\/p\u003e\n\u003cdiv class=\"wp-block-image\"\u003e\n\u003cfigure class=\"aligncenter size-full\"\u003e\u003cimg class=\"aligncenter wp-image-5676 size-full\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/a24b87b33aca0353d3eda38dca56e36a_3640c7ac-6df4-4333-8929-cd936d30b22c.jpg?v=1766570165\" sizes=\"(max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/a24b87b33aca0353d3eda38dca56e36a_3640c7ac-6df4-4333-8929-cd936d30b22c.jpg?v=1766570165 300w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/a24b87b33aca0353d3eda38dca56e36a-150x150.jpg 150w\" alt=\"\" width=\"300\" height=\"300\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"wp-block-heading\"\u003eConnection Guide\u003c\/h3\u003e\n\u003ch4 class=\"wp-block-heading\"\u003eFor Planetary Imaging\u003c\/h4\u003e\n\u003cdiv class=\"wp-block-image\"\u003e\n\u003cfigure class=\"aligncenter size-full\"\u003e\u003cimg class=\"wp-image-5671\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/4f653a2562ad60158ad056f1418f58bd_6ca3a7b1-5edc-42e3-a69a-20ea1201e6a5.jpg?v=1766570167\" sizes=\"(max-width: 750px) 100vw, 750px\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/4f653a2562ad60158ad056f1418f58bd_6ca3a7b1-5edc-42e3-a69a-20ea1201e6a5.jpg?v=1766570167 750w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/4f653a2562ad60158ad056f1418f58bd-730x438.jpg 730w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/4f653a2562ad60158ad056f1418f58bd-300x180.jpg 300w\" alt=\"\" width=\"750\" height=\"450\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wp-block-image\"\u003e\n\u003cfigure class=\"aligncenter size-full\"\u003e\u003cimg class=\"wp-image-5672\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/96bd029abcbaa5dc6191b8884d5b9702_5c66610d-05db-4b4f-bf8f-0577c8bda30e.jpg?v=1766570171\" sizes=\"(max-width: 750px) 100vw, 750px\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/96bd029abcbaa5dc6191b8884d5b9702_5c66610d-05db-4b4f-bf8f-0577c8bda30e.jpg?v=1766570171 750w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/96bd029abcbaa5dc6191b8884d5b9702-730x438.jpg 730w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/96bd029abcbaa5dc6191b8884d5b9702-300x180.jpg 300w\" alt=\"\" width=\"750\" height=\"450\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wp-block-image\"\u003e\n\u003cfigure class=\"aligncenter size-full\"\u003e\u003cimg class=\"wp-image-5673\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/7617d0ccb7c51b676d0af63ee363c6a9_4f0a7c4e-9557-4835-961a-a6b765a1d1a1.jpg?v=1766570173\" sizes=\"(max-width: 750px) 100vw, 750px\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/7617d0ccb7c51b676d0af63ee363c6a9_4f0a7c4e-9557-4835-961a-a6b765a1d1a1.jpg?v=1766570173 750w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/7617d0ccb7c51b676d0af63ee363c6a9-730x438.jpg 730w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/7617d0ccb7c51b676d0af63ee363c6a9-300x180.jpg 300w\" alt=\"\" width=\"750\" height=\"450\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wp-block-image\"\u003e\n\u003cfigure class=\"aligncenter size-full\"\u003e\u003cimg class=\"wp-image-5674\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/0e0b73d85af86981ff9e1ee0f26ae8be_e33b6674-7229-46d3-b59e-ff4965ae43b7.jpg?v=1766570175\" sizes=\"(max-width: 750px) 100vw, 750px\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/0e0b73d85af86981ff9e1ee0f26ae8be_e33b6674-7229-46d3-b59e-ff4965ae43b7.jpg?v=1766570175 750w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/0e0b73d85af86981ff9e1ee0f26ae8be-730x438.jpg 730w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/0e0b73d85af86981ff9e1ee0f26ae8be-300x180.jpg 300w\" alt=\"\" width=\"750\" height=\"450\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003ch4 class=\"wp-block-heading\"\u003eFor DSO Imaging\u003c\/h4\u003e\n\u003cdiv class=\"wp-block-image\"\u003e\n\u003cfigure class=\"aligncenter size-full\"\u003e\u003cimg class=\"wp-image-5666\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/4fd8eeb5b331590ef8f81b5c6ec889c1_278eae0e-698e-45b5-a7ad-4eb8bd2c0150.jpg?v=1766570178\" sizes=\"(max-width: 750px) 100vw, 750px\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/4fd8eeb5b331590ef8f81b5c6ec889c1_278eae0e-698e-45b5-a7ad-4eb8bd2c0150.jpg?v=1766570178 750w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/4fd8eeb5b331590ef8f81b5c6ec889c1-730x438.jpg 730w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/4fd8eeb5b331590ef8f81b5c6ec889c1-300x180.jpg 300w\" alt=\"\" width=\"750\" height=\"450\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wp-block-image\"\u003e\n\u003cfigure class=\"aligncenter size-full\"\u003e\u003cimg class=\"wp-image-5667\" src=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/c3b18705ba1fc30250a2fea857633284.jpg\" sizes=\"(max-width: 750px) 100vw, 750px\" srcset=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/c3b18705ba1fc30250a2fea857633284.jpg 750w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/c3b18705ba1fc30250a2fea857633284-730x438.jpg 730w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/c3b18705ba1fc30250a2fea857633284-300x180.jpg 300w\" alt=\"\" width=\"750\" height=\"450\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wp-block-image\"\u003e\n\u003cfigure class=\"aligncenter size-full\"\u003e\u003cimg class=\"wp-image-5669\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/b5318d68039399e72875097f708554f1_33e48de8-9bce-4a14-aac7-7ac1f1aa2001.jpg?v=1766570183\" sizes=\"(max-width: 750px) 100vw, 750px\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/b5318d68039399e72875097f708554f1_33e48de8-9bce-4a14-aac7-7ac1f1aa2001.jpg?v=1766570183 750w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/b5318d68039399e72875097f708554f1-730x438.jpg 730w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/b5318d68039399e72875097f708554f1-300x180.jpg 300w\" alt=\"\" width=\"750\" height=\"450\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wp-block-image\"\u003e\n\u003cfigure class=\"aligncenter size-full\"\u003e\u003cimg class=\"wp-image-5670\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/3fffe392ca4375433a2432da343c8320_1e1b4caf-d4f4-4ca0-a8b8-c26df95dac76.jpg?v=1766570185\" sizes=\"(max-width: 750px) 100vw, 750px\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/3fffe392ca4375433a2432da343c8320_1e1b4caf-d4f4-4ca0-a8b8-c26df95dac76.jpg?v=1766570185 750w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/3fffe392ca4375433a2432da343c8320-730x438.jpg 730w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/3fffe392ca4375433a2432da343c8320-300x180.jpg 300w\" alt=\"\" width=\"750\" height=\"450\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"wp-block-heading\"\u003eMechanical Diagram\u003c\/h3\u003e\n\u003cdiv class=\"wp-block-image\"\u003e\n\u003cfigure class=\"aligncenter size-full\"\u003e\u003cimg class=\"wp-image-5675\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/0ab8213acfc0e59efdce29a2cb7398f9_5a4b8c7a-97d7-41fd-a9f9-1c5b9416537d.jpg?v=1766570188\" sizes=\"(max-width: 1000px) 100vw, 1000px\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/0ab8213acfc0e59efdce29a2cb7398f9_5a4b8c7a-97d7-41fd-a9f9-1c5b9416537d.jpg?v=1766570188 1000w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/0ab8213acfc0e59efdce29a2cb7398f9-730x292.jpg 730w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/0ab8213acfc0e59efdce29a2cb7398f9-300x120.jpg 300w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/05\/0ab8213acfc0e59efdce29a2cb7398f9-768x307.jpg 768w\" alt=\"\" width=\"1000\" height=\"400\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":44014081179759,"sku":"ZWO-M43-ADPT","price":50.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/M43__17180.jpg?v=1766570190"},{"product_id":"zwo-d21-uv-ir-cut-protective-window","title":"ZWO D21 UV IR-Cut Protective Window","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eZWO D21 UV IR-Cut Protective Window\u003c\/strong\u003e is a \u003cstrong\u003e21 mm\u003c\/strong\u003e replacement window for ZWO ASI cameras. It is \u003cstrong\u003e1.1 mm\u003c\/strong\u003e thick, figured to \u003cstrong\u003e1\/4 λ flatness\u003c\/strong\u003e, and sits directly in front of the sensor, where it does two jobs at once: it seals the sensor chamber against dust and humidity, and it blocks ultraviolet and infrared light outside the visible band.\u003c\/p\u003e\n\u003cp\u003eThis is a consumable spare, not an upgrade. If the window on your camera is scratched, fogged, or contaminated beyond cleaning, this is the part that replaces it.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if you own a ZWO camera that shipped with a \u003cstrong\u003eD21 × 1.1 mm UV IR-cut window\u003c\/strong\u003e — the ASI120MC-S or ASI178MC — and need to replace a damaged one.\u003c\/p\u003e\n\u003cp\u003eIt is also the correct part if you own a camera fitted with a \u003cstrong\u003eD21 AR window\u003c\/strong\u003e and want to convert it to IR-cut, so that you no longer need a separate UV\/IR-cut filter in the imaging train. Confirm your camera's window diameter before ordering: a 21 mm window will not fit a body machined for 25 mm or 32 mm.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e21 mm diameter, 1.1 mm thick:\u003c\/strong\u003e the D21 form factor used across ZWO's smaller-sensor bodies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUV IR-cut coating:\u003c\/strong\u003e passes visible light and rejects ultraviolet and infrared, unlike an AR window, which passes both\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4 λ flatness:\u003c\/strong\u003e the window sits in a converging beam directly ahead of the sensor, so surface figure matters — a poorly figured window degrades star shapes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDust and humidity seal:\u003c\/strong\u003e the window is the sensor chamber's only physical barrier\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOptical glass with coatings on both faces\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacing a scratched or contaminated window\u003c\/strong\u003e on an ASI120MC-S or ASI178MC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConverting a D21 AR-equipped camera to IR-cut\u003c\/strong\u003e, removing the need for a separate UV\/IR-cut filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlanetary and lunar imaging with refractors\u003c\/strong\u003e, where uncorrected infrared focuses at a different point than visible light and softens the image\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaytime or terrestrial use\u003c\/strong\u003e of an ASI camera, where infrared leakage shifts colour badly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCameras shipped with this window:\u003c\/strong\u003e ASI120MC-S and ASI178MC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter is not interchangeable:\u003c\/strong\u003e D21 fits 21 mm bodies only. ASI174-series bodies take the D25; ASI1600 \/ ASI294 \/ ASI183 take the D32; ASI6200 \/ ASI2400 \/ ASI2600 take the D60\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAR vs IR-cut:\u003c\/strong\u003e an AR window is anti-reflective only and does not cut UV or IR. If your camera came with a D21 AR window and you want IR-cut behaviour at the sensor, this is the part that changes it\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo installation direction:\u003c\/strong\u003e ZWO confirms the window has no preferred orientation — it can be fitted either face forward\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement procedure:\u003c\/strong\u003e ZWO publishes an official guide, \u003ca href=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2025\/12\/c36da643469647ac8334179b49aa8b11.pdf\" target=\"_blank\" rel=\"noopener\"\u003eHow to Replace the Camera Protective Window\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical part only\u003c\/strong\u003e — no electronic function, no camera communication\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eImportant Limitations\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is a bare optical window, not a filter you can thread into an imaging train.\u003c\/strong\u003e It only works installed inside the camera body\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement means opening the sensor chamber.\u003c\/strong\u003e Dust introduced during the swap lands on or near the sensor. Work in still, clean air. ZWO does not recommend that users replace windows on cameras where the window is factory-fitted at close tolerance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a substitute for a light-pollution or narrowband filter\u003c\/strong\u003e — it cuts UV and IR only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits 21 mm bodies only.\u003c\/strong\u003e Check your camera model against the list above before ordering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold as a single window.\u003c\/strong\u003e No tools, gaskets, or retaining ring included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich cameras use the D21 UV IR-cut window?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eZWO ships this window on the ASI120MC-S and ASI178MC. It also physically fits other D21-bodied cameras that came with an AR window, if you want to convert them to IR-cut.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the AR window and the UV IR-cut window?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe AR window is anti-reflective coated but optically clear — it passes ultraviolet and infrared straight through to the sensor. The UV IR-cut window blocks both. ZWO states plainly that the AR window does not cut UV.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I still need a UV\/IR-cut filter in my imaging train?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNot for that purpose, no. With this window installed, the IR-cut function happens at the sensor. That frees the filter drawer or wheel for something else.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the window have to face a particular direction?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. ZWO confirms there is no specific installation direction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMy protective window is scratched. Do I need to replace it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA scratched window scatters light and can produce halos around bright stars. The camera will still focus and operate without it, but the sensor is then exposed to dust and humidity — which is a far worse problem. Replace it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my ASI1600 or ASI294?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. Those bodies use the 32 mm D32 window. This is 21 mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs there a D32 UV IR-cut version?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. ZWO produces the D32 in AR only. If you need IR-cut on an ASI1600 or ASI294, use a filter in the imaging train instead.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this good for beginners?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe part is simple, but fitting it is not a beginner task — it means opening the sensor chamber. If you are not confident doing that cleanly, have it done rather than risk dust on the sensor.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 21 mm × 1.1 mm UV IR-cut window at 1\/4 λ flatness — the correct replacement for an ASI120MC-S or ASI178MC, and the part that converts a D21 AR-equipped camera to IR-cut at the sensor. Confirm your diameter first; D21 does not fit D25, D32, or D60 bodies.\u003c\/p\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":53804401000559,"sku":"D21IR-CUT","price":20.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/426474105bc9afcb1261044235a281b3-1.jpg?v=1784083160"},{"product_id":"zwo-d21-ar-protective-window","title":"ZWO D21 AR Protective Window","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eZWO D21 AR Protective Window\u003c\/strong\u003e is a \u003cstrong\u003e21 mm\u003c\/strong\u003e replacement window for ZWO ASI cameras. It is \u003cstrong\u003e1.1 mm\u003c\/strong\u003e thick, figured to \u003cstrong\u003e1\/4 λ flatness\u003c\/strong\u003e, and carries an \u003cstrong\u003eanti-reflective coating on both faces\u003c\/strong\u003e. It sits directly in front of the sensor and seals the sensor chamber against dust and humidity.\u003c\/p\u003e\n\u003cp\u003eAn AR window is optically clear. It does \u003cstrong\u003enot\u003c\/strong\u003e block ultraviolet or infrared — it only reduces surface reflections. That distinction matters, and it is covered below.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if you own a ZWO camera that shipped with a \u003cstrong\u003eD21 × 1.1 mm AR window\u003c\/strong\u003e and need to replace one that is scratched, fogged, or contaminated beyond cleaning.\u003c\/p\u003e\n\u003cp\u003eIt is also the right choice if you run your \u003cstrong\u003eUV\/IR-cut filtering in the imaging train\u003c\/strong\u003e — in a filter drawer, wheel, or threaded filter — and want the window at the sensor to stay optically neutral rather than cutting the band a second time.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e21 mm diameter, 1.1 mm thick:\u003c\/strong\u003e the D21 form factor used across ZWO's smaller-sensor bodies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-reflective coating:\u003c\/strong\u003e reduces reflection losses and internal glare at the window surfaces, which is where halos around bright stars can originate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptically clear:\u003c\/strong\u003e passes UV and IR straight through — all wavelength control happens elsewhere in your train\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4 λ flatness:\u003c\/strong\u003e the window sits in a converging beam immediately ahead of the sensor, so surface figure directly affects star shapes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDust and humidity seal:\u003c\/strong\u003e the window is the sensor chamber's only physical barrier\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacing a scratched or contaminated AR window\u003c\/strong\u003e on a D21-bodied ASI camera\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonochrome imaging\u003c\/strong\u003e, where filtering is handled by a filter wheel and a sensor-side IR-cut would be redundant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrowband and photometric work\u003c\/strong\u003e, where you want no unnecessary coatings shaping the passband\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInfrared and methane-band planetary imaging\u003c\/strong\u003e, which an IR-cut window would defeat outright\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatch models:\u003c\/strong\u003e ASI120 series, ASI178 series, ASI290 series, ASI224MC series, ASI385 series, ASI185MC series, ASI220 series, ASI462 series, ASI662 series, ASI678 series, ASI664 series, and ASI715 series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter is not interchangeable:\u003c\/strong\u003e D21 fits 21 mm bodies only. ASI174-series bodies take the D25; ASI1600 \/ ASI294 \/ ASI183 \/ ASI533 take the D32; ASI6200 \/ ASI2400 \/ ASI2600 take the D60\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWant IR-cut instead?\u003c\/strong\u003e Fit the D21 UV IR-Cut window in the same body — same diameter and thickness, different coating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo installation direction:\u003c\/strong\u003e ZWO confirms the window has no preferred orientation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement procedure:\u003c\/strong\u003e see ZWO's official guide, \u003ca href=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2025\/12\/c36da643469647ac8334179b49aa8b11.pdf\" target=\"_blank\" rel=\"noopener\"\u003eHow to Replace the Camera Protective Window\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical part only\u003c\/strong\u003e — no electronic function, no camera communication\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eImportant Limitations\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis window does not cut UV or IR.\u003c\/strong\u003e ZWO states that plainly. If you are imaging in colour through a refractor with no filter in the train, infrared will focus at a different point than visible light and soften your image. Use the D21 UV IR-Cut window instead, or add a filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a threaded filter.\u003c\/strong\u003e It is a bare optical window that only works installed inside the camera body\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement means opening the sensor chamber.\u003c\/strong\u003e Dust introduced during the swap lands on or near the sensor. ZWO specifically advises against user replacement on some bodies — including the ASI462MC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits 21 mm bodies only.\u003c\/strong\u003e Check your camera against the list above before ordering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold as a single window.\u003c\/strong\u003e No tools, gaskets, or retaining ring included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the AR window and the UV IR-cut window?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe AR window is anti-reflective coated but optically clear — it passes ultraviolet and infrared through to the sensor. The UV IR-cut window blocks both. ZWO confirms directly that the AR window does not cut UV.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich cameras use the D21 AR window?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe ASI120, ASI178, ASI290, ASI224MC, ASI385, ASI185MC, ASI220, ASI462, ASI662, ASI678, ASI664, and ASI715 series.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShould I choose AR or IR-cut?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf you already filter in the imaging train — a filter wheel, drawer, or threaded UV\/IR-cut — keep the AR window and let those do the work. If you shoot one-shot-colour with nothing in the train, the IR-cut window does the job at the sensor and frees your drawer for something else.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the window have to face a particular direction?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. ZWO confirms there is no specific installation direction, so the anti-reflective coating works either way round.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I fit this to my ASI462MC myself?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is the correct window for that camera, but ZWO does not recommend replacing it yourself. Their guidance, not ours.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMy protective window is scratched — can I just remove it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe camera will focus and operate without it, but the sensor is then open to dust and humidity, which is a far worse problem than the scratch. Replace it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my ASI1600 or ASI294?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. Those bodies use the 32 mm D32 AR window. This is 21 mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this good for beginners?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe part is simple; fitting it is not a beginner task, since it means opening the sensor chamber. If you are not confident working clean, have it done.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 21 mm × 1.1 mm anti-reflective window at 1\/4 λ flatness — the correct spare for D21-bodied ASI cameras, and the right choice when your UV\/IR filtering already happens in the imaging train. It does not cut UV or IR; if you need that at the sensor, fit the D21 UV IR-Cut instead.\u003c\/p\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":53804443926639,"sku":"D21AR","price":20.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f8fc754efe2799ca917eee21d7350efd.jpg?v=1784083457"},{"product_id":"zwo-d25-uv-ir-cut-protective-window","title":"ZWO D25 UV IR-Cut Protective Window","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eZWO D25 UV IR-Cut Protective Window\u003c\/strong\u003e is a \u003cstrong\u003e25 mm\u003c\/strong\u003e replacement window for ZWO ASI cameras. It is \u003cstrong\u003e1.1 mm\u003c\/strong\u003e thick, figured to \u003cstrong\u003e1\/4 λ flatness\u003c\/strong\u003e, and mounts directly in front of the sensor. It seals the sensor chamber against dust and humidity while blocking ultraviolet and infrared outside the visible band.\u003c\/p\u003e\n\u003cp\u003eThis is a consumable spare and a conversion part, not an upgrade to image quality on its own.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if you own an \u003cstrong\u003eASI174-series camera\u003c\/strong\u003e — ASI174MM, ASI174MC, ASI174MM-COOL, or ASI174MC-COOL — and need to replace a scratched or contaminated window.\u003c\/p\u003e\n\u003cp\u003eIt is also the part ZWO specifies if you own an \u003cstrong\u003eASI485MC\u003c\/strong\u003e, which ships with the D25 AR window, and want to convert it to IR-cut at the sensor rather than carrying a UV\/IR-cut filter in the imaging train.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e25 mm diameter, 1.1 mm thick:\u003c\/strong\u003e the D25 form factor used on ASI174-series and ASI485MC bodies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUV IR-cut coating:\u003c\/strong\u003e passes visible light and rejects ultraviolet and infrared, unlike the AR window, which passes both\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4 λ flatness:\u003c\/strong\u003e the window sits in a converging beam directly ahead of the sensor, so surface figure feeds straight into star shapes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDust and humidity seal:\u003c\/strong\u003e the window is the sensor chamber's only physical barrier\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoated optical glass\u003c\/strong\u003e, supplied as a bare window\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacing a scratched or contaminated window\u003c\/strong\u003e on any ASI174-series camera\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConverting an ASI485MC from AR to IR-cut\u003c\/strong\u003e, which is ZWO's own stated use for this part\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlanetary and lunar imaging through refractors\u003c\/strong\u003e, where uncorrected infrared focuses at a different point than visible light and softens detail\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-shot-colour imaging with no filter in the train\u003c\/strong\u003e, where infrared leakage shifts colour and bloats stars\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCameras shipped with this window:\u003c\/strong\u003e ASI174MM, ASI174MC, ASI174MM-COOL, and ASI174MC-COOL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASI485MC conversion:\u003c\/strong\u003e the ASI485MC ships with the D25 AR window; ZWO names the D25IR-CUT as the correct IR-cut replacement for it\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter is not interchangeable:\u003c\/strong\u003e D25 fits 25 mm bodies only. Smaller planetary bodies take the D21; ASI1600 \/ ASI294 \/ ASI183 \/ ASI533 take the D32; ASI6200 \/ ASI2400 \/ ASI2600 take the D60\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo installation direction:\u003c\/strong\u003e ZWO confirms the window has no preferred orientation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement procedure:\u003c\/strong\u003e see ZWO's official guide, \u003ca href=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2025\/12\/c36da643469647ac8334179b49aa8b11.pdf\" target=\"_blank\" rel=\"noopener\"\u003eHow to Replace the Camera Protective Window\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical part only\u003c\/strong\u003e — no electronic function, no camera communication\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eImportant Limitations\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is a bare optical window, not a threaded filter.\u003c\/strong\u003e It only works installed inside the camera body\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement means opening the sensor chamber.\u003c\/strong\u003e Dust introduced during the swap lands on or near the sensor — work in still, clean air\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt will defeat infrared imaging.\u003c\/strong\u003e If you shoot IR-pass or methane-band planetary work, this window blocks exactly the light you want. Use the D25 AR instead\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a light-pollution or narrowband filter\u003c\/strong\u003e — it cuts UV and IR only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits 25 mm bodies only.\u003c\/strong\u003e Check your camera against the list above before ordering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold as a single window.\u003c\/strong\u003e No tools, gaskets, or retaining ring included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich cameras use the D25 UV IR-cut window?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eZWO fits it to the ASI174MM, ASI174MC, ASI174MM-COOL, and ASI174MC-COOL. It is also the specified IR-cut conversion window for the ASI485MC.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eI have an ASI485MC — is this the right part?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, if you want IR-cut at the sensor. The ASI485MC ships with the D25 AR window, and ZWO names the D25IR-CUT as its IR-cut replacement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the AR window and the UV IR-cut window?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe AR window is anti-reflective coated but optically clear and passes UV and IR. This one blocks both. ZWO confirms the AR window does not cut UV.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I still need a UV\/IR-cut filter in my imaging train?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNot for that purpose. With this window installed the IR-cut happens at the sensor, which frees a filter drawer or wheel slot.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the window have to face a particular direction?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. ZWO confirms there is no specific installation direction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I still do infrared planetary imaging with this fitted?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo — that is the one thing it rules out. An IR-pass or methane-band filter needs infrared to reach the sensor, and this window stops it. Keep or fit the D25 AR for that work.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my ASI1600 or ASI294?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. Those bodies use the 32 mm D32 window. This is 25 mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this good for beginners?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe part is simple, but fitting it means opening the sensor chamber. If you are not confident working clean, have it done rather than risk dust on the sensor.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 25 mm × 1.1 mm UV IR-cut window at 1\/4 λ flatness — the correct spare for the ASI174 series and ZWO's specified IR-cut conversion for the ASI485MC. It rules out infrared imaging by design; if you need that, use the D25 AR.\u003c\/p\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":53804450873455,"sku":"D25IR-CUT","price":23.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/426474105bc9afcb1261044235a281b3-1_3793fb17-3951-4b93-b19c-b63bda49cfac.jpg?v=1784083502"},{"product_id":"zwo-d25-ar-protective-window","title":"ZWO D25 AR Protective Window","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eZWO D25 AR Protective Window\u003c\/strong\u003e is a \u003cstrong\u003e25 mm\u003c\/strong\u003e replacement window for ZWO ASI cameras. It is \u003cstrong\u003e1.1 mm\u003c\/strong\u003e thick, figured to \u003cstrong\u003e1\/4 λ flatness\u003c\/strong\u003e, and carries an \u003cstrong\u003eanti-reflective coating\u003c\/strong\u003e. It sits directly in front of the sensor and seals the sensor chamber against dust and humidity.\u003c\/p\u003e\n\u003cp\u003eAn AR window is optically clear. It reduces surface reflections but does \u003cstrong\u003enot\u003c\/strong\u003e block ultraviolet or infrared — that distinction drives most of the buying decision here, and it is covered below.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if you own an \u003cstrong\u003eASI174-series camera\u003c\/strong\u003e or an \u003cstrong\u003eASI485MC\u003c\/strong\u003e — both ship with the D25 AR window — and need to replace one that is scratched, fogged, or contaminated beyond cleaning.\u003c\/p\u003e\n\u003cp\u003eIt is also the right choice if you \u003cstrong\u003efilter in the imaging train\u003c\/strong\u003e rather than at the sensor, or if you do \u003cstrong\u003einfrared work\u003c\/strong\u003e that an IR-cut window would defeat outright.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e25 mm diameter, 1.1 mm thick:\u003c\/strong\u003e the D25 form factor used on ASI174-series and ASI485MC bodies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-reflective coating:\u003c\/strong\u003e reduces reflection losses and internal glare at the window surfaces, a common origin of halos around bright stars\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptically clear:\u003c\/strong\u003e passes UV and IR straight through — all wavelength control happens elsewhere\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4 λ flatness:\u003c\/strong\u003e the window sits in a converging beam directly ahead of the sensor, so surface figure directly affects star shapes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDust and humidity seal:\u003c\/strong\u003e the window is the sensor chamber's only physical barrier\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacing a scratched or contaminated AR window\u003c\/strong\u003e on an ASI174-series camera or ASI485MC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInfrared and methane-band planetary imaging\u003c\/strong\u003e, which requires infrared to reach the sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonochrome imaging\u003c\/strong\u003e where a filter wheel already handles wavelength selection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrowband and photometric work\u003c\/strong\u003e, where you want no unnecessary coating shaping the passband\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-frame-rate solar and lunar work\u003c\/strong\u003e with the ASI174, where the sensor's speed is the point and filtering is external\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatch models:\u003c\/strong\u003e the ASI174 series. The ASI485MC also ships with this window\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWant IR-cut instead?\u003c\/strong\u003e Fit the D25 UV IR-Cut window — same diameter and thickness, different coating. ZWO names it specifically as the ASI485MC's IR-cut conversion\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter is not interchangeable:\u003c\/strong\u003e D25 fits 25 mm bodies only. Smaller planetary bodies take the D21; ASI1600 \/ ASI294 \/ ASI183 \/ ASI533 take the D32; ASI6200 \/ ASI2400 \/ ASI2600 take the D60\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo installation direction:\u003c\/strong\u003e ZWO confirms the window has no preferred orientation, so the coating works either way round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement procedure:\u003c\/strong\u003e see ZWO's official guide, \u003ca href=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2025\/12\/c36da643469647ac8334179b49aa8b11.pdf\" target=\"_blank\" rel=\"noopener\"\u003eHow to Replace the Camera Protective Window\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical part only\u003c\/strong\u003e — no electronic function, no camera communication\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eImportant Limitations\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis window does not cut UV or IR.\u003c\/strong\u003e ZWO states that plainly. Shooting one-shot-colour through a refractor with nothing in the train means infrared focuses at a different point than visible light and softens the image. Use the D25 UV IR-Cut instead, or filter in the train\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a threaded filter.\u003c\/strong\u003e It is a bare optical window that only works installed inside the camera body\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement means opening the sensor chamber.\u003c\/strong\u003e Dust introduced during the swap lands on or near the sensor — work in still, clean air\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits 25 mm bodies only.\u003c\/strong\u003e Check your camera against the list above before ordering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold as a single window.\u003c\/strong\u003e No tools, gaskets, or retaining ring included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich cameras use the D25 AR window?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe ASI174 series. The ASI485MC also ships with it from the factory.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the AR window and the UV IR-cut window?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe AR window is anti-reflective coated but optically clear — it passes ultraviolet and infrared through to the sensor. The UV IR-cut window blocks both. ZWO confirms directly that the AR window does not cut UV.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShould I choose AR or IR-cut?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf you filter in the imaging train, or you image in infrared, keep the AR window. If you shoot one-shot-colour with nothing in the train, the IR-cut version does that job at the sensor and frees a filter slot.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eI have an ASI485MC and want IR-cut — what do I order?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe D25IR-CUT. ZWO names it as the correct IR-cut replacement for that camera.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the window have to face a particular direction?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. ZWO confirms there is no specific installation direction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMy protective window is scratched — can I just remove it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe camera will focus and operate without it, but the sensor is then open to dust and humidity, which is a worse problem than the scratch. Replace it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my ASI1600 or ASI294?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. Those bodies use the 32 mm D32 AR window. This is 25 mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this good for beginners?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe part is simple; fitting it is not, since it means opening the sensor chamber. If you are not confident working clean, have it done.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 25 mm × 1.1 mm anti-reflective window at 1\/4 λ flatness — the factory spare for the ASI174 series and ASI485MC, and the right choice when you filter in the train or image in infrared. It does not cut UV or IR; if you need that at the sensor, fit the D25 UV IR-Cut.\u003c\/p\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":53804457459823,"sku":"D25AR","price":23.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f8fc754efe2799ca917eee21d7350efd_cd3116e0-c9d7-41b3-9269-843cf646dcc0.jpg?v=1784083547"},{"product_id":"zwo-d32-ar-protective-window","title":"ZWO D32 AR Protective Window","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eZWO D32 AR Protective Window\u003c\/strong\u003e is a \u003cstrong\u003e32 mm\u003c\/strong\u003e replacement window for ZWO ASI cameras. It is \u003cstrong\u003e2 mm\u003c\/strong\u003e thick — nearly double the 1.1 mm of the smaller D21 and D25 windows — figured to \u003cstrong\u003e1\/4 λ flatness\u003c\/strong\u003e, and carries an \u003cstrong\u003eanti-reflective coating\u003c\/strong\u003e. It sits directly in front of the sensor and seals the sensor chamber against dust and humidity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eZWO produces the D32 in AR only.\u003c\/strong\u003e There is no D32 UV IR-cut window. If you need IR-cut on a D32-bodied camera, it has to happen in the imaging train — see the limitations below.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if you own a \u003cstrong\u003eD32-bodied ASI camera\u003c\/strong\u003e — the ASI1600, ASI294, ASI183, ASI533, ASI585, ASI990, or ASI991 series — and need to replace a window that is scratched, fogged, or contaminated beyond cleaning.\u003c\/p\u003e\n\u003cp\u003eBecause there is no IR-cut alternative in this diameter, this is simply \u003cstrong\u003ethe\u003c\/strong\u003e window for these bodies rather than a choice between two coatings.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e32 mm diameter, 2 mm thick:\u003c\/strong\u003e the D32 form factor, covering ZWO's 4\/3\" and 1\" class sensors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-reflective coating:\u003c\/strong\u003e reduces reflection losses and internal glare at the window surfaces, a common origin of halos around bright stars\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptically clear:\u003c\/strong\u003e passes UV and IR straight through — all wavelength control happens in your imaging train\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4 λ flatness:\u003c\/strong\u003e the window sits in a converging beam directly ahead of the sensor, so surface figure feeds straight into star shapes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 mm substrate:\u003c\/strong\u003e thicker glass than the D21 and D25 windows, matched to the larger clear aperture\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDust and humidity seal:\u003c\/strong\u003e the window is the sensor chamber's only physical barrier\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacing a scratched or contaminated window\u003c\/strong\u003e on an ASI1600, ASI294, ASI183, ASI533, ASI585, ASI990, or ASI991\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonochrome deep-sky imaging\u003c\/strong\u003e, where a filter wheel handles all wavelength selection anyway\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrowband imaging\u003c\/strong\u003e, where you want no extra coating shaping the passband\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInfrared and methane-band planetary imaging\u003c\/strong\u003e, which requires infrared to reach the sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-shot-colour imaging\u003c\/strong\u003e with a UV\/IR-cut filter carried in a drawer, wheel, or threaded ahead of the camera\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatch models:\u003c\/strong\u003e ASI1600 series, ASI294 series, ASI183 series, ASI533 series, ASI585 series, ASI990 series, and ASI991 series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASI585 Air is not included\u003c\/strong\u003e in the D32 match list — ZWO calls that exception out specifically\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter is not interchangeable:\u003c\/strong\u003e D32 fits 32 mm bodies only. Smaller planetary bodies take the D21 or D25; ASI6200 \/ ASI2400 \/ ASI2600 take the D60\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo IR-cut option in this size.\u003c\/strong\u003e Carry a UV\/IR-cut filter in a ZWO filter drawer or filter wheel instead\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo installation direction:\u003c\/strong\u003e ZWO confirms the window has no preferred orientation, so the coating works either way round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement procedure:\u003c\/strong\u003e see ZWO's official guide, \u003ca href=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2025\/12\/c36da643469647ac8334179b49aa8b11.pdf\" target=\"_blank\" rel=\"noopener\"\u003eHow to Replace the Camera Protective Window\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical part only\u003c\/strong\u003e — no electronic function, no camera communication\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eImportant Limitations\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis window does not cut UV or IR\u003c\/strong\u003e, and ZWO does not make a D32 that does. On a one-shot-colour camera behind a refractor with nothing in the train, infrared will focus at a different point than visible light and soften the image. Put a UV\/IR-cut filter in your train\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a threaded filter.\u003c\/strong\u003e It is a bare optical window that only works installed inside the camera body\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement means opening the sensor chamber.\u003c\/strong\u003e Dust introduced during the swap lands on or near the sensor — work in still, clean air\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits 32 mm bodies only\u003c\/strong\u003e, and not the ASI585 Air. Check your camera against the list above before ordering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold as a single window.\u003c\/strong\u003e No tools, gaskets, or retaining ring included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich cameras use the D32 AR window?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe ASI1600, ASI294, ASI183, ASI533, ASI585, ASI990, and ASI991 series. The ASI585 Air is excluded.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs there a D32 UV IR-cut window?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. ZWO makes the D32 in AR only. If you need IR-cut on one of these cameras, use a UV\/IR-cut filter in a filter drawer or wheel ahead of the camera.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is this window 2 mm thick when the D21 and D25 are 1.1 mm?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe larger clear aperture needs a thicker substrate to hold its figure. Keeping 1\/4 λ flatness across 32 mm takes more glass than across 21 mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the window have to face a particular direction?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. ZWO confirms there is no specific installation direction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMy ASI1600 window is scratched — can I just leave it out?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe camera will focus and operate without it, but the sensor chamber is then open to dust and humidity, which is a far worse problem than the scratch. Replace it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eI have an ASI585 Air. Does this fit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. ZWO excludes the ASI585 Air from the D32 match list even though other ASI585-series bodies are included. Check before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my ASI2600 or ASI6200?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. Those bodies use the 60 mm D60 window. This is 32 mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this good for beginners?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe part is simple; fitting it is not, since it means opening the sensor chamber. If you are not confident working clean, have it done rather than risk dust on the sensor.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 32 mm × 2 mm anti-reflective window at 1\/4 λ flatness — the only protective window ZWO makes for the ASI1600, ASI294, ASI183, ASI533 and ASI585 bodies. There is no IR-cut version in this diameter, so plan on a UV\/IR-cut filter in your train if you shoot one-shot-colour.\u003c\/p\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":53804465782895,"sku":"D32-2-AR","price":35.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f8fc754efe2799ca917eee21d7350efd_560cc259-2914-4c06-9428-4b4114c23ba7.jpg?v=1784083596"},{"product_id":"zwo-d60-uv-ir-cut-protective-window","title":"ZWO D60 UV IR-Cut Protective Window","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eZWO D60 UV IR-Cut Protective Window\u003c\/strong\u003e is a \u003cstrong\u003e60 mm\u003c\/strong\u003e replacement window for ZWO's large-format cooled cameras. It is \u003cstrong\u003e2 mm\u003c\/strong\u003e thick, figured to \u003cstrong\u003e1\/4 λ flatness\u003c\/strong\u003e, and mounts directly in front of the sensor — sealing the cooled sensor chamber against dust and humidity while blocking ultraviolet and infrared outside the visible band.\u003c\/p\u003e\n\u003cp\u003eThis is the window ZWO fits to its \u003cstrong\u003eone-shot-colour\u003c\/strong\u003e full-frame and APS-C cooled bodies. The monochrome equivalents take the AR window instead, for reasons covered below.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if you own an \u003cstrong\u003eASI6200MC Pro, ASI2400MC Pro, or ASI2600MC Pro\/Duo\u003c\/strong\u003e and need to replace a window that is scratched, fogged, or contaminated beyond cleaning.\u003c\/p\u003e\n\u003cp\u003eOn a cooled camera the window matters more than on an uncooled one: it is the seal that keeps the desiccated sensor chamber dry. A compromised window is not just an optical problem — it is a condensation problem.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e60 mm diameter, 2 mm thick:\u003c\/strong\u003e the D60 form factor, sized for ZWO's APS-C and full-frame cooled bodies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUV IR-cut coating:\u003c\/strong\u003e passes visible light and rejects ultraviolet and infrared — the correct behaviour for a one-shot-colour sensor with no filter in the train\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4 λ flatness across 60 mm:\u003c\/strong\u003e holding that figure over this aperture is why the substrate is 2 mm rather than 1.1 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor-chamber seal:\u003c\/strong\u003e on a TEC-cooled camera this window is the barrier keeping humidity away from a sensor held well below ambient\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoated optical glass\u003c\/strong\u003e, supplied as a bare window\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacing a scratched or contaminated window\u003c\/strong\u003e on an ASI6200MC Pro, ASI2400MC Pro, or ASI2600MC Pro\/Duo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRestoring the sensor-chamber seal\u003c\/strong\u003e on a cooled camera that has begun showing condensation or frosting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-shot-colour deep-sky imaging\u003c\/strong\u003e, where IR-cut at the sensor keeps stars tight and colour honest without consuming a filter slot\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide-field refractor work\u003c\/strong\u003e, where uncorrected infrared focuses at a different point than visible light and bloats stars\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCameras shipped with this window:\u003c\/strong\u003e ASI6200MC Pro, ASI2400MC Pro, and ASI2600MC Pro\/Duo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour bodies take IR-cut, mono bodies take AR.\u003c\/strong\u003e The ASI6200MM Pro and ASI2600MM Pro\/Duo ship with the D60 AR window instead, because a monochrome camera does its filtering in the filter wheel and an IR-cut at the sensor would be redundant. The ASI071MC Pro also takes the AR window\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter is not interchangeable:\u003c\/strong\u003e D60 fits 60 mm bodies only. ASI1600 \/ ASI294 \/ ASI183 \/ ASI533 take the D32; smaller planetary bodies take the D21 or D25\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo installation direction:\u003c\/strong\u003e ZWO confirms the window has no preferred orientation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement procedure:\u003c\/strong\u003e see ZWO's official guide, \u003ca href=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2025\/12\/c36da643469647ac8334179b49aa8b11.pdf\" target=\"_blank\" rel=\"noopener\"\u003eHow to Replace the Camera Protective Window\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical part only\u003c\/strong\u003e — no electronic function, no camera communication\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eImportant Limitations\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is the highest-risk window in the range to replace yourself.\u003c\/strong\u003e These are cooled, desiccated cameras — opening the sensor chamber exposes a large sensor to dust and room humidity, and any moisture sealed inside will condense the moment the TEC runs. Check your desiccant before reassembling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt will defeat infrared imaging.\u003c\/strong\u003e If you shoot IR-pass work, this window blocks exactly the light you want. Use the D60 AR instead\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a threaded filter.\u003c\/strong\u003e It is a bare optical window that only works installed inside the camera body\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a light-pollution or narrowband filter\u003c\/strong\u003e — it cuts UV and IR only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits 60 mm bodies only.\u003c\/strong\u003e Check your camera against the list above before ordering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold as a single window.\u003c\/strong\u003e No tools, gaskets, desiccant, or retaining ring included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich cameras use the D60 UV IR-cut window?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe ASI6200MC Pro, ASI2400MC Pro, and ASI2600MC Pro\/Duo — ZWO's one-shot-colour large-format cooled bodies.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does my ASI2600MM Pro have a different window?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBecause it is monochrome. Mono cameras filter in the filter wheel, so an IR-cut coating at the sensor would be redundant and would block narrowband and infrared work. ZWO fits the D60 AR window to the mono bodies instead.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the AR window and the UV IR-cut window?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe AR window is anti-reflective coated but optically clear and passes UV and IR. This one blocks both. ZWO confirms the AR window does not cut UV.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I still need a UV\/IR-cut filter in my imaging train?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNot for that purpose. With this window fitted the IR-cut happens at the sensor, which frees a slot in your drawer or wheel.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the window have to face a particular direction?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. ZWO confirms there is no specific installation direction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is this window 2 mm thick when the D21 and D25 are 1.1 mm?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHolding 1\/4 λ flatness across a 60 mm aperture takes a thicker substrate than across 21 mm. Thin glass at this diameter would not stay flat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMy cooled camera is frosting up. Is the window the cause?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt can be, if the seal is compromised — but exhausted desiccant is the more common culprit. Check and bake or replace the desiccant first before opening the sensor chamber.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this good for beginners?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. Replacing a window on a large cooled camera is the least forgiving job in this range. If you are not equipped to work clean and manage desiccant, have it done.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 60 mm × 2 mm UV IR-cut window at 1\/4 λ flatness — the factory part for the ASI6200MC Pro, ASI2400MC Pro, and ASI2600MC Pro\/Duo. Colour bodies take this; mono bodies take the D60 AR. Fitting it means opening a cooled, desiccated chamber, so treat the desiccant as part of the job.\u003c\/p\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":53804480790639,"sku":"D60-2-IRCUT","price":62.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/426474105bc9afcb1261044235a281b3-1_fa6aff16-5e86-4ebc-9e24-bd41bfd085a6.jpg?v=1784083651"},{"product_id":"zwo-d60-ar-protective-window","title":"ZWO D60 AR Protective Window","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eZWO D60 AR Protective Window\u003c\/strong\u003e is a \u003cstrong\u003e60 mm\u003c\/strong\u003e replacement window for ZWO's large-format cooled cameras. It is \u003cstrong\u003e2 mm\u003c\/strong\u003e thick, figured to \u003cstrong\u003e1\/4 λ flatness\u003c\/strong\u003e, and carries an \u003cstrong\u003eanti-reflective coating\u003c\/strong\u003e. It mounts directly in front of the sensor and seals the cooled sensor chamber against dust and humidity.\u003c\/p\u003e\n\u003cp\u003eAn AR window is optically clear — it reduces surface reflections but does \u003cstrong\u003enot\u003c\/strong\u003e block ultraviolet or infrared. That is deliberate on these bodies, and the reason is worth understanding before you order.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if you own an \u003cstrong\u003eASI6200MM Pro, ASI2600MM Pro\/Duo, or ASI071MC Pro\u003c\/strong\u003e and need to replace a window that is scratched, fogged, or contaminated beyond cleaning.\u003c\/p\u003e\n\u003cp\u003eIf you run a \u003cstrong\u003emonochrome camera behind a filter wheel\u003c\/strong\u003e, this is the window you want and the one ZWO fits: your filters already control the passband, and an IR-cut coating at the sensor would only get in the way of narrowband and infrared work.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e60 mm diameter, 2 mm thick:\u003c\/strong\u003e the D60 form factor, sized for ZWO's APS-C and full-frame cooled bodies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-reflective coating:\u003c\/strong\u003e reduces reflection losses and internal glare at the window surfaces — worth having on a large sensor where bright-star halos are most visible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptically clear:\u003c\/strong\u003e passes UV and IR straight through, leaving all wavelength control to your filter wheel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4 λ flatness across 60 mm:\u003c\/strong\u003e holding that figure over this aperture is why the substrate is 2 mm rather than 1.1 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor-chamber seal:\u003c\/strong\u003e on a TEC-cooled camera this window is the barrier keeping humidity away from a sensor held well below ambient\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacing a scratched or contaminated window\u003c\/strong\u003e on an ASI6200MM Pro, ASI2600MM Pro\/Duo, or ASI071MC Pro\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLRGB and narrowband monochrome imaging\u003c\/strong\u003e, where the filter wheel does the filtering and the window should stay neutral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhotometry and scientific imaging\u003c\/strong\u003e, where you want no unnecessary coating shaping the passband\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInfrared imaging\u003c\/strong\u003e, which an IR-cut window would defeat outright\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRestoring the sensor-chamber seal\u003c\/strong\u003e on a cooled camera showing condensation or frosting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCameras shipped with this window:\u003c\/strong\u003e ASI6200MM Pro, ASI2600MM Pro\/Duo, and ASI071MC Pro\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMono bodies take AR, colour bodies take IR-cut\u003c\/strong\u003e — with one exception. The ASI071MC Pro is a one-shot-colour camera that ZWO nonetheless fits with the AR window, so do not infer your window type from mono-versus-colour alone. Check the list\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWant IR-cut instead?\u003c\/strong\u003e Fit the D60 UV IR-Cut window — same diameter and thickness, different coating. That is the factory part on the ASI6200MC Pro, ASI2400MC Pro, and ASI2600MC Pro\/Duo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter is not interchangeable:\u003c\/strong\u003e D60 fits 60 mm bodies only. ASI1600 \/ ASI294 \/ ASI183 \/ ASI533 take the D32; smaller planetary bodies take the D21 or D25\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo installation direction:\u003c\/strong\u003e ZWO confirms the window has no preferred orientation, so the coating works either way round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement procedure:\u003c\/strong\u003e see ZWO's official guide, \u003ca href=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2025\/12\/c36da643469647ac8334179b49aa8b11.pdf\" target=\"_blank\" rel=\"noopener\"\u003eHow to Replace the Camera Protective Window\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical part only\u003c\/strong\u003e — no electronic function, no camera communication\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eImportant Limitations\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis window does not cut UV or IR.\u003c\/strong\u003e ZWO states that plainly. On the ASI071MC Pro — a colour camera — that means you need a UV\/IR-cut filter in your imaging train, or infrared will focus at a different point than visible light and bloat your stars\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is the highest-risk window in the range to replace yourself.\u003c\/strong\u003e These are cooled, desiccated cameras — opening the sensor chamber exposes a large sensor to dust and room humidity, and any moisture sealed inside will condense the moment the TEC runs. Check your desiccant before reassembling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a threaded filter.\u003c\/strong\u003e It is a bare optical window that only works installed inside the camera body\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits 60 mm bodies only.\u003c\/strong\u003e Check your camera against the list above before ordering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold as a single window.\u003c\/strong\u003e No tools, gaskets, desiccant, or retaining ring included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich cameras use the D60 AR window?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe ASI6200MM Pro, ASI2600MM Pro\/Duo, and ASI071MC Pro.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does a monochrome camera use an AR window instead of IR-cut?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBecause a mono camera filters in the filter wheel. An IR-cut coating at the sensor would be redundant for LRGB work and would block narrowband and infrared imaging outright. Leaving the window neutral keeps every option open.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMy ASI071MC Pro is a colour camera — why does it have the AR window?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is the exception in the D60 range. ZWO fits it with the AR window, so if you image with it and want IR-cut behaviour, carry a UV\/IR-cut filter in your train.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the AR window and the UV IR-cut window?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe AR window is anti-reflective coated but optically clear and passes UV and IR. The UV IR-cut window blocks both. ZWO confirms the AR window does not cut UV.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the window have to face a particular direction?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. ZWO confirms there is no specific installation direction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is this window 2 mm thick when the D21 and D25 are 1.1 mm?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHolding 1\/4 λ flatness across a 60 mm aperture takes a thicker substrate than across 21 mm. Thin glass at this diameter would not stay flat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMy cooled camera is frosting up. Is the window the cause?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt can be, if the seal is compromised — but exhausted desiccant is the more common culprit. Check and bake or replace the desiccant before opening the sensor chamber.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this good for beginners?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. Replacing a window on a large cooled camera is the least forgiving job in this range. If you are not equipped to work clean and manage desiccant, have it done.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 60 mm × 2 mm anti-reflective window at 1\/4 λ flatness — the factory part for the ASI6200MM Pro, ASI2600MM Pro\/Duo, and ASI071MC Pro. It stays optically neutral so your filter wheel does the filtering. It does not cut UV or IR, which matters if you run the colour ASI071MC Pro.\u003c\/p\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":53804505301103,"sku":"D60-2-AR","price":49.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f8fc754efe2799ca917eee21d7350efd_f95065e3-4f07-47e6-b6c5-1ae4b917224b.jpg?v=1784083701"},{"product_id":"zwo-m54-m48-21-adapter","title":"ZWO M54-M48-21 Adapter","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eZWO M54-M48-21 Adapter\u003c\/strong\u003e is a \u003cstrong\u003e21 mm\u003c\/strong\u003e extender carrying an \u003cstrong\u003eM54 male thread\u003c\/strong\u003e on one end and an \u003cstrong\u003eM48 female thread\u003c\/strong\u003e on the other. Machined from black anodized aluminium, it converts the M54 rear thread found on ZWO's larger cooled cameras to the M48 (2\") filter standard while contributing a known, fixed 21 mm to your imaging train.\u003c\/p\u003e\n\u003cp\u003eIts purpose is arithmetic. Most ZWO cooled cameras are built around a \u003cstrong\u003e55 mm backfocus\u003c\/strong\u003e target, and this adapter exists to fill a 21 mm gap in that sum exactly.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if you run a \u003cstrong\u003eZWO cooled camera with an M54 rear thread\u003c\/strong\u003e and need to reach 55 mm backfocus without stacking a pile of thin spacers, each with its own tolerance.\u003c\/p\u003e\n\u003cp\u003eIt is also useful if you want a \u003cstrong\u003e2\" nosepiece\u003c\/strong\u003e on an M54-threaded camera — the M48 female end accepts a 2\" filter directly, and the barrel drops into a 2\" focuser.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e21 mm optical length:\u003c\/strong\u003e a known, fixed contribution to the backfocus sum — not an adjustable part\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM54 × 0.75 male thread:\u003c\/strong\u003e mates to the M54 rear thread on ZWO's larger cooled bodies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM48 × 0.75 female thread:\u003c\/strong\u003e the 2\" filter standard — threads a 2\" filter straight in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoubles as a 2\" nosepiece:\u003c\/strong\u003e the M48 end is a 2\" barrel, so it drops into a standard 2\" focuser\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack anodized aluminium:\u003c\/strong\u003e the internal finish suppresses reflections inside the light path\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical only\u003c\/strong\u003e — no optics, no glass, no electrical connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHitting 55 mm backfocus\u003c\/strong\u003e on an M54-threaded ZWO cooled camera where 21 mm is the gap you need to fill\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreading a 2\" filter directly to the camera\u003c\/strong\u003e when you are not running a filter wheel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUsing an M54 camera as a 2\" nosepiece assembly\u003c\/strong\u003e in a standard focuser\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacing a spacer stack\u003c\/strong\u003e with one machined part, removing the accumulated tolerance of several thin rings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera side:\u003c\/strong\u003e M54 × 0.75 male — fits ZWO cooled cameras with an M54 rear thread. Confirm your camera's rear thread before ordering; ZWO also uses M42 and M68 across the range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter side:\u003c\/strong\u003e M48 × 0.75 female, the 2\" filter thread\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackfocus is a sum, not a single number.\u003c\/strong\u003e Your camera's own sensor-to-flange distance, plus this 21 mm, plus any filter wheel, OAG, or filter thickness, must total what your flattener or reducer specifies — usually 55 mm. Work the whole chain out before ordering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilters add optical path.\u003c\/strong\u003e A filter in the train shifts focus by roughly one third of its glass thickness. Account for it rather than discovering it at the corners\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot adjustable.\u003c\/strong\u003e If you need a different length, ZWO makes M54 extenders in other sizes — including 16.5 mm and 21 mm M54-to-M54 versions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical adapter only\u003c\/strong\u003e — no electronic communication with the camera\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eImportant Limitations\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is a spacer, not a corrector.\u003c\/strong\u003e It does not flatten a field, reduce a focal ratio, or fix star shapes. If your corners are poor, spacing is only one of the possible causes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrong length means bad corners.\u003c\/strong\u003e Backfocus tolerance on a fast flattener is typically a millimetre or so. Being 21 mm out because you guessed the chain will show as elongated or misshapen corner stars\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixed 21 mm.\u003c\/strong\u003e It cannot be shortened, and shimming it longer defeats the point of a machined part\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM54 male only.\u003c\/strong\u003e It will not thread to an M42 or M68 camera without a further adapter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo filter, no optics, and no camera included.\u003c\/strong\u003e This is a bare aluminium adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is this adapter actually for?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eReaching 55 mm backfocus on an M54-threaded ZWO cooled camera. It contributes a fixed, known 21 mm so the chain adds up, and converts M54 to the M48 2\" filter thread on the way.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I thread a 2\" filter into it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The M48 × 0.75 female end is the 2\" filter standard.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it as a 2\" nosepiece?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes — the M48 end is a 2\" barrel, so it drops into a standard 2\" focuser. That makes it a practical way to put an M54 camera into a visual-style focuser.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich cameras does this fit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eZWO cooled cameras with an M54 rear thread. Check your specific model first — ZWO uses M42, M54, and M68 across the line, and the wrong one simply will not thread.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I work out whether I need 21 mm?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAdd your camera's sensor-to-flange backfocus, this adapter's 21 mm, and anything else in the chain — filter wheel, OAG, filter glass. The total needs to match what your flattener or reducer calls for. If the sum is not 55 mm, this is not the right length.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the filter I put in it change my spacing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. Glass in a converging beam shifts focus by roughly a third of its thickness. Include it in the sum.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this good for beginners?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe part is simple to fit — it threads on. The hard bit is the arithmetic, not the assembly. If you are unsure of your chain, work the numbers out before ordering rather than buying spacers and hoping.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMy corner stars are still bad after fitting this. Why?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSpacing is one cause of poor corners; sensor tilt and an optic that does not cover your sensor are the others. If your total backfocus is right and the corners are still wrong, look at tilt next.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 21 mm M54 male to M48 female adapter in black anodized aluminium — the part that closes a 21 mm gap in a 55 mm backfocus chain and gives you a 2\" filter thread and nosepiece at the same time. Work out your full chain before ordering; the length is fixed and the tolerance is tight.\u003c\/p\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":53804616613999,"sku":"M54-M48-21","price":32.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/62bf1edb36141f114521ec4bb4175579_2023-10.jpg?v=1784084346"},{"product_id":"zwo-m54m-m48f-adapter","title":"ZWO M54M-M48F Adapter","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eZWO M54M-M48F Adapter\u003c\/strong\u003e converts an \u003cstrong\u003eM54 male thread\u003c\/strong\u003e to an \u003cstrong\u003eM48 female thread\u003c\/strong\u003e — the 2\" filter standard — and does so with \u003cstrong\u003eeffectively no added optical length\u003c\/strong\u003e. The M48 thread is cut on the inside and the M54 on the outside, so the two threads occupy the same space rather than sitting end to end.\u003c\/p\u003e\n\u003cp\u003eThat is the entire point of this part. Where a normal adapter costs you millimetres you then have to subtract elsewhere, this one changes the thread standard while leaving your backfocus sum essentially untouched.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if your \u003cstrong\u003ebackfocus is already correct\u003c\/strong\u003e and you simply need an M54 thread to become an M48 thread — with nothing added to the chain.\u003c\/p\u003e\n\u003cp\u003eIt is also the right part if you want to \u003cstrong\u003ethread a 2\" filter onto an M54 camera or filter drawer\u003c\/strong\u003e without disturbing spacing you have already dialled in.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero effective optical length:\u003c\/strong\u003e the threads are nested rather than stacked, so it adds no meaningful distance to the imaging train\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM54 male on the outside, M48 female on the inside:\u003c\/strong\u003e a thread-standard conversion in a single ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccepts 2\" filters directly\u003c\/strong\u003e via the M48 × 0.75 female thread\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachined aluminium ring\u003c\/strong\u003e, low profile by design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical only\u003c\/strong\u003e — no optics, no glass, no electrical connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConverting M54 to M48\u003c\/strong\u003e when your backfocus sum is already correct and has no room to give\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreading a 2\" filter\u003c\/strong\u003e onto an M54-threaded camera, drawer, or accessory\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnecting M54 accessories to M48 components\u003c\/strong\u003e across an existing imaging train\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRescuing a chain that is already at its limit\u003c\/strong\u003e, where any added length would push you past your flattener's spacing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread interface:\u003c\/strong\u003e M54 × 0.75 male on the outside, M48 × 0.75 female on the inside\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm your camera's rear thread first.\u003c\/strong\u003e ZWO uses M42, M54, and M68 across the range — this part is M54 only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeed length as well as conversion?\u003c\/strong\u003e The M54-M48-21 gives the same thread change plus a fixed 21 mm, which is often what a 55 mm backfocus chain actually needs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilters still add optical path.\u003c\/strong\u003e The adapter adds nothing, but a filter threaded into it shifts focus by roughly one third of its glass thickness. Account for that separately\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical adapter only\u003c\/strong\u003e — no electronic communication with the camera\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eImportant Limitations\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt adds no length — which is a limitation as much as a feature.\u003c\/strong\u003e If your chain is short of 55 mm, this part will not help you get there. You need a spacer or a longer adapter instead\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is not a corrector.\u003c\/strong\u003e It does not flatten a field, reduce focal ratio, or improve star shapes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM54 male only.\u003c\/strong\u003e It will not thread to an M42 or M68 camera without a further adapter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo filter, no optics, and no camera included.\u003c\/strong\u003e This is a bare aluminium ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow profile means little to grip.\u003c\/strong\u003e Tighten by hand and do not force it — aluminium threads will gall if cross-threaded\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow much length does this add to my imaging train?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEffectively none. The M48 female thread is cut inside the M54 male thread, so the conversion happens in the same space rather than adding a section. That is what distinguishes it from every other M54-to-M48 part.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between this and the M54-M48-21?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSame thread conversion, different length. This one adds nothing; the M54-M48-21 adds a fixed 21 mm. Which you want depends entirely on whether your backfocus sum needs filling or is already correct.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I thread a 2\" filter into it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The M48 × 0.75 female thread is the 2\" filter standard.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich cameras does this fit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAnything with an M54 male-compatible thread — ZWO's M54-threaded cooled cameras, filter drawers, and accessories. Check your model, since ZWO also uses M42 and M68.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMy backfocus is 21 mm short. Is this the part I need?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo — the opposite. This adds nothing. You want the M54-M48-21, which contributes exactly that.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it affect image quality?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNot on its own. It has no glass. It only matters in that it lets you keep a spacing figure you have already got right.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this good for beginners?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is simple to fit. The judgement is knowing whether you need a zero-length conversion or a spacer — work out your full chain first.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: an M54 male to M48 female adapter that changes the thread standard and adds effectively nothing to your optical train. Buy it when your backfocus is already right and you just need M54 to become M48. If you are short on length, buy the M54-M48-21 instead.\u003c\/p\u003e","brand":"ZWO Optical","offers":[{"title":"Default Title","offer_id":53804623724655,"sku":"M54-M48","price":16.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/fd107bec4a5eaaed6441a46280dcc929_86d5975d-97a5-45ee-9eb4-881507359bcd.jpg?v=1784084321"}],"url":"https:\/\/ontariotelescope.com\/collections\/zwo-accessories.oembed","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}