{"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","url":"https:\/\/ontariotelescope.com\/products\/zwo-d60-uv-ir-cut-protective-window","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}