{"title":"ZWO","description":"\u003cdiv\u003e\n  \u003cp\u003e\n    Whether your focus is deep-sky imaging or planetary capture, ZWO (Suzhou ZhenWang Optoelectronics) has redefined modern astrophotography. At David Astro, we are a trusted Canadian authorized dealer for ZWO equipment, recognized for hands-on expertise, technical support, and an extensive in-stock inventory. With fast shipping across Canada, the USA, and worldwide, we make it easy to get the right gear quickly, so you can focus on imaging rather than waiting for equipment.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    We carry the full lineup of ZWO cameras, mounts, focusers, and accessories, and our team actively uses this equipment under Canadian skies. Our goal is to help you configure and operate your system efficiently, reducing setup complexity and maximizing imaging performance.\n  \u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c!-- more --\u003e\n\n\u003cdiv\u003e\n  \u003ch2\u003eThe ZWO Ecosystem: Integrated Imaging\u003c\/h2\u003e\n  \u003cp\u003e\n    ZWO’s strength lies in its ecosystem approach. Cameras, mounts, focusers, filter wheels, rotators, and software are designed to operate as a single, cohesive system, controlled via the ASIAIR smart controller. That means fewer driver conflicts, simpler cable management, and an automation workflow that runs from your phone or tablet — without a dedicated laptop at the mount.\n  \u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eASIAIR Series (Plus, Mini):\u003c\/strong\u003e Centralized control for automation and imaging management.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eASI Cameras:\u003c\/strong\u003e High-performance cooled and uncooled CMOS sensors for deep-sky, planetary, lunar, and solar imaging.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEAF (Electronic Automatic Focuser):\u003c\/strong\u003e Maintains precise focus throughout extended sessions.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEFW (Electronic Filter Wheel):\u003c\/strong\u003e Enables automated filter switching for LRGB and narrowband imaging.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eZWO AM Series Mounts (AM3N, AM5N, AM7):\u003c\/strong\u003e Compact, high-torque harmonic drive mounts for stable tracking.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCAA (Camera Angle Adjuster):\u003c\/strong\u003e Rotate precisely for framing, composition, and off-axis guiding optimization.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n  \u003ch2\u003eWhy Choose David Astro for ZWO?\u003c\/h2\u003e\n  \u003cp\u003e\n    Buying ZWO equipment is an investment in both hardware and workflow. David Astro is more than a retailer; we provide expert guidance, technical support, and reliable service. As a trusted Canadian source for ZWO, we offer:\n  \u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAuthorized Retailer:\u003c\/strong\u003e Full manufacturer warranty and verified authenticity on all ZWO products.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIn-stock Inventory:\u003c\/strong\u003e Large selection of cameras, mounts, and accessories ready for immediate shipment from Canada.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eExpert Guidance:\u003c\/strong\u003e Specialized support for building your complete imaging train, including sensor selection and back-focus calculations.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRepair \u0026amp; Service:\u003c\/strong\u003e In-house support and diagnostics for ZWO equipment, reducing downtime and simplifying after-sales support.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFast Shipping:\u003c\/strong\u003e Reliable delivery across Canada, the USA, and worldwide with no hidden import fees for Canadian customers.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eFrom component selection to system calibration or image processing, we support every stage of your astrophotography workflow.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n  \u003ch2\u003eZWO Canada — Frequently Asked Questions\u003c\/h2\u003e\n  \u003cdl\u003e\n    \u003cdt\u003e\u003cstrong\u003eIs the warranty the same as buying from the manufacturer?\u003c\/strong\u003e\u003c\/dt\u003e\n    \u003cdd\u003eYes, you receive the full ZWO manufacturer warranty. By purchasing through David Astro, your warranty and any necessary repairs are handled domestically in Canada, eliminating the need for international shipping and customs paperwork.\u003c\/dd\u003e\n\n    \u003cdt\u003e\u003cstrong\u003eAre all items shipped from within Canada?\u003c\/strong\u003e\u003c\/dt\u003e\n    \u003cdd\u003eYes. All items marked as in stock are held in our Canadian inventory. This ensures that Canadian buyers do not face surprise duties or brokerage fees upon delivery.\u003c\/dd\u003e\n\n    \u003cdt\u003e\u003cstrong\u003eCan you help with system compatibility?\u003c\/strong\u003e\u003c\/dt\u003e\n    \u003cdd\u003eYes. We regularly help customers calculate back-focus distances and select the correct adapters to ensure their ZWO imaging train works perfectly with their specific telescope and reducer.\u003c\/dd\u003e\n  \u003c\/dl\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n  \u003ch2\u003eReady to build your ZWO system?\u003c\/h2\u003e\n  \u003cp\u003eIn-stock inventory, Canadian warranty, and expert support. Ships from Canada. Contact us for guidance!\u003c\/p\u003e\n\u003c\/div\u003e","products":[{"product_id":"zwo-helical-focuser-1-25","title":"ZWO Helical Focuser - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e1.25\" non-rotating helical focuser\u003c\/li\u003e\n\u003cli\u003e6mm of precise focus travel\u003c\/li\u003e\n\u003cli\u003e0.1mm adjustment accuracy\u003c\/li\u003e\n\u003cli\u003eM42 female threads for direct OAG attachment\u003c\/li\u003e\n\u003cli\u003eMaintains guide camera orientation during focus\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO 1.25\" Non-Rotating Helical Focuser\u003c\/h2\u003e\n\u003cp\u003eThe ZWO 1.25\" Non-Rotating Helical Focuser provides critical focus adjustment for guide cameras, offering 6mm of travel with a repeatable precision of 0.1mm. Its non-rotating design is essential for autoguiding, maintaining perfect guide star orientation while the compact 48.5mm minimum height ensures it fits into tight imaging trains without issue.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eZero Rotation Guiding with 0.1mm Precision\u003c\/h3\u003e\n\u003cp\u003eStandard helical focusers rotate the attached camera during adjustment, forcing you to re-select your guide star. This ZWO focuser eliminates that problem entirely. The internal 1.25\" barrel moves linearly, ensuring your guide camera's sensor remains perfectly stationary so you can dial in focus with 0.1mm accuracy without losing your field of view or calibration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e6mm of Travel \u0026amp; M42 Threads for ZWO OAGs\u003c\/h3\u003e\n\u003cp\u003eEngineered specifically for ZWO's ecosystem, this focuser features M42 female threads that attach directly to the male threads on a ZWO Off-Axis Guider (OAG). The 6mm of focus travel is ample for achieving a sharp focus with popular mini guide cameras. With a minimum height of just 48.5mm, it adds minimal length to the optical path, helping you meet the back focus requirements of your primary imaging camera and flattener.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e1.25\" Single-Speed Reliability\u003c\/h3\u003e\n\u003cp\u003eThe ZWO Helical Focuser is a single-speed unit designed for reliability and ease of use. For autoguiding, focus is a set-and-forget adjustment, not a continuous action. This simple, robust mechanical design provides a stable platform for your guide camera, free from the complexity or potential flexure of more intricate focusers, ensuring your guiding remains sharp and consistent throughout the night.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of the ZWO 1.25\" Helical Focuser being non-rotating?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhen you focus a guide camera with a standard rotating helical focuser, the camera itself twists. This rotation changes the field of view, forcing you to find and re-select your guide star. The \u003cstrong\u003enon-rotating design\u003c\/strong\u003e of the ZWO focuser moves the camera straight in and out, so your guide star never leaves its position on the sensor during focusing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach the ZWO Helical Focuser to my ZWO OAG?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe focuser has \u003cstrong\u003eM42x0.75 female threads\u003c\/strong\u003e on the telescope side. This allows it to screw directly onto the corresponding male threads of the guide port on a ZWO OAG, creating a secure, threaded connection with no chance of tilt.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 6mm focus travel on the ZWO Helical Focuser enough for most guide cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, for its intended purpose with an OAG or a separate guide scope, \u003cstrong\u003e6mm of travel\u003c\/strong\u003e is typically sufficient to bring common guide cameras, like the ZWO ASI120MM Mini or ASI290MM Mini, to a sharp focus. It provides enough range to compensate for minor differences in optical setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ZWO 1.25\" Helical Focuser for a visual eyepiece in my finderscope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. If your finderscope accepts 1.25\" accessories and has an M42-threaded output, this focuser is an excellent upgrade. It allows you to use standard 1.25\" eyepieces and achieve a much finer focus than the simple sliding or rotating focusers found on most stock finderscopes, effectively turning it into a small guide scope or rich-field refractor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the adjustment accuracy of the ZWO 1.25\" Helical Focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe minimum adjustment accuracy is \u003cstrong\u003e0.1mm\u003c\/strong\u003e. This level of precision allows you to make very fine corrections to achieve the tightest possible stars from your guide camera, which translates directly to better tracking and sharper final images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this a dual-speed focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this is a \u003cstrong\u003eSingle Speed Focuser\u003c\/strong\u003e. It is designed for the specific task of precisely setting the focus for a guide camera, which is typically done once at the start of an imaging session. The single-speed mechanism is robust, compact, and perfectly suited for this application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-HF125\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Design\u003c\/td\u003e\n\u003ctd\u003eNon-Rotating Helical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeed\u003c\/td\u003e\n\u003ctd\u003eSingle Speed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Side Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Thread\u003c\/td\u003e\n\u003ctd\u003eM42x0.75 Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocus Travel\u003c\/td\u003e\n\u003ctd\u003e6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Height\u003c\/td\u003e\n\u003ctd\u003e48.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustment Accuracy\u003c\/td\u003e\n\u003ctd\u003e0.1mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO 1.25” Non-Rotating Helical Focuser\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967383531805,"sku":"ZWO-HF1-25","price":83.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-1-25-inch-Helical-Focuser-1__02923.1596910044.1280.1280.jpg?v=1684341747"},{"product_id":"zwo-t-mount-adapter-1-25","title":"ZWO T-Mount Adapter - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n    \u003cli\u003eConnects T-threaded cameras to 1.25\" focusers\u003c\/li\u003e\n    \u003cli\u003eStandard M42x0.75 male T-threads\u003c\/li\u003e\n    \u003cli\u003eInternally threaded for 1.25\" astronomy filters\u003c\/li\u003e\n    \u003cli\u003eDurable black anodized aluminum construction\u003c\/li\u003e\n    \u003cli\u003eEnables prime-focus astrophotography\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n    \u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n    \u003cli\u003eFAQ\u003c\/li\u003e\n    \u003cli\u003eSpecifications\u003c\/li\u003e\n    \u003cli\u003eIn the Box\u003c\/li\u003e\n    \u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n    \u003cli class=\"active\"\u003e\n        \u003cdiv\u003e\n            \u003cdiv class=\"DAV-bg-light\"\u003e\n                \u003cdiv class=\"DAV-section-center\"\u003e\n                    \u003ch2\u003eZWO 1.25\" T-Mount Adapter\u003c\/h2\u003e\n                    \u003cp\u003eThe ZWO 1.25\" T-Mount Adapter is the essential link for prime-focus astrophotography, allowing you to connect any camera with standard M42x0.75 T-threads directly to a telescope's 1.25\" focuser or eyepiece holder. Machined from black anodized aluminum, this adapter provides a secure, light-tight connection, turning your telescope into a powerful telephoto lens for your astronomy camera or DSLR (with appropriate T-Ring). Its internal M28.5x0.6 threads also allow you to mount standard 1.25\" filters, perfect for adding light pollution, UV\/IR cut, or narrowband filters to your imaging train without needing a separate filter wheel.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"DAV-bg-light\"\u003e\n                \u003cdiv class=\"DAV-section\"\u003e\n                    \u003ch3\u003ePrime-Focus Imaging with M42 Threads\u003c\/h3\u003e\n                    \u003cp\u003eThis adapter is the most direct way to achieve prime-focus imaging. By connecting your camera's T-threads (M42x0.75) to the telescope's 1.25\" focuser, you place the camera sensor at the telescope's focal plane. This configuration maximizes image brightness and field of view, making it ideal for capturing everything from the Moon and planets to faint deep-sky objects.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"DAV-bg-light\"\u003e\n                \u003cdiv class=\"DAV-section\"\u003e\n                    \u003ch3\u003eIntegrated 1.25\" Filter Cell\u003c\/h3\u003e\n                    \u003cp\u003eA key feature of the ZWO 1.25\" T-Mount is its internal threading, designed to accept any standard 1.25\" astronomy filter. This lets you easily thread in a light pollution filter for urban imaging or a UV\/IR cut filter to sharpen planetary details with a color camera. This integration simplifies your imaging setup, keeping the optical path short and rigid.\u003c\/p\u003e\n                    \u003cul\u003e\n                        \u003cli\u003e\n\u003cstrong\u003eSecure Connection:\u003c\/strong\u003e Precision-machined from a single piece of aluminum for a flex-free fit between your camera and telescope.\u003c\/li\u003e\n                        \u003cli\u003e\n\u003cstrong\u003eStandard Threads:\u003c\/strong\u003e Features a male M42x0.75 T-thread for universal compatibility with ZWO cameras, other astronomy cameras, and DSLR T-Rings.\u003c\/li\u003e\n                        \u003cli\u003e\n\u003cstrong\u003eMatte Black Finish:\u003c\/strong\u003e The interior is blackened to absorb stray light and prevent reflections, ensuring maximum contrast in your images.\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cdiv class=\"DAV-accordion\"\u003e\n            \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat cameras can I use with the ZWO 1.25\" T-Mount Adapter?\u003c\/h3\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"DAV-accordion-A\"\u003e\n            \u003cp\u003eYou can use any camera that has a female T-thread (M42x0.75). This includes all ZWO astronomy cameras, as well as DSLRs and mirrorless cameras when they are fitted with a brand-specific T-Ring.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"DAV-accordion\"\u003e\n            \u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach a filter to the ZWO T-Mount Adapter?\u003c\/h3\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"DAV-accordion-A\"\u003e\n            \u003cp\u003eThe 1.25\" nosepiece barrel is internally threaded with standard M28.5x0.6 filter threads. Simply screw your 1.25\" filter directly into the barrel of the adapter before inserting it into the telescope's focuser.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"DAV-accordion\"\u003e\n            \u003ch3 class=\"DAV-accordion-Q\"\u003eIs this adapter suitable for visual use with an eyepiece?\u003c\/h3\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"DAV-accordion-A\"\u003e\n            \u003cp\u003eNo, this adapter is designed specifically for astrophotography. It connects a camera to a telescope and does not have a holder for an eyepiece. For visual use, you would insert an eyepiece directly into the focuser.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"DAV-accordion\"\u003e\n            \u003ch3 class=\"DAV-accordion-Q\"\u003eWill I be able to reach focus with the ZWO 1.25\" T-Mount Adapter on my Newtonian reflector?\u003c\/h3\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"DAV-accordion-A\"\u003e\n            \u003cp\u003eMany Newtonian reflectors have limited back-focus. While this adapter is very short, you may still need a Barlow lens placed before the adapter to extend the focal point and reach focus with your camera. Refractors and Schmidt-Cassegrain telescopes typically have sufficient focus travel.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"DAV-accordion\"\u003e\n            \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between a T-Mount and a C-Mount?\u003c\/h3\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"DAV-accordion-A\"\u003e\n            \u003cp\u003eA T-Mount uses M42x0.75 threads and has a flange distance of 55mm (when used with a DSLR T-Ring). A C-Mount is smaller (1\"x32 TPI thread) with a 17.526mm flange distance. This ZWO adapter is a T-Mount adapter and is not compatible with C-Mount cameras without an additional adapter.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"DAV-accordion\"\u003e\n            \u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the ZWO T-Mount Adapter add any magnification?\u003c\/h3\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"DAV-accordion-A\"\u003e\n            \u003cp\u003eNo, this adapter does not contain any optics and does not change the magnification. It serves only as a physical connection, allowing your camera to use the native focal length of your telescope.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003ctable class=\"DAV-specifications\"\u003e\n            \u003ctbody\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eSKU\u003c\/td\u003e\n                    \u003ctd\u003eZWO-T-MOUNT\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eAdapter Type\u003c\/td\u003e\n                    \u003ctd\u003eT-Mount to 1.25\" Nosepiece\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eTelescope Connection\u003c\/td\u003e\n                    \u003ctd\u003e1.25\" Barrel\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eCamera Connection\u003c\/td\u003e\n                    \u003ctd\u003eMale T \/ T2 Thread (M42x0.75)\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eFilter Compatibility\u003c\/td\u003e\n                    \u003ctd\u003eInternal 1.25\" Filter Threads (M28.5x0.6)\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eMaterial\u003c\/td\u003e\n                    \u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n                \u003c\/tr\u003e\n            \u003c\/tbody\u003e\n        \u003c\/table\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cul class=\"DAV-grid\"\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003eZWO 1.25\" T-Mount Adapter\u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003eDust Caps\u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n        \u003c\/ul\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Warranty\u003c\/a\u003e\n    \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967383597341,"sku":"ZWO-T-Mount","price":25.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-1-25-inch-T-Mount-Adapter.jpg?v=1742409219"},{"product_id":"zwo-1-3-2-1mm-150-lens","title":"ZWO 2.1mm 150° All-Sky Lens - For 1\/3\" Sensors","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e2.1mm Focal Length\u003c\/li\u003e\n\u003cli\u003e150° Field of View\u003c\/li\u003e\n\u003cli\u003eOptimized for 1\/3\" Format Sensors\u003c\/li\u003e\n\u003cli\u003eFunctions as an All-Sky Camera Lens\u003c\/li\u003e\n\u003cli\u003eStandard CS-Mount Thread\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO 2.1mm 150° All-Sky Lens - For 1\/3\" Sensors\u003c\/h2\u003e\n\u003cp\u003eThe ZWO 2.1mm CS-mount lens transforms your planetary camera into a dedicated all-sky monitoring tool, capturing a vast 150° field of view in a single frame. This lens is specifically designed for ZWO cameras equipped with a 1\/3\" sensor, such as the ASI120 or ASI224MC, providing edge-to-edge coverage for meteor detection and weather surveillance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCapture a 150° Horizon-to-Horizon View\u003c\/h3\u003e\n\u003cp\u003eWith a short 2.1mm focal length, this lens achieves an extremely wide 150° field of view. This allows you to capture the majority of the night sky at once, making it the ideal choice for recording meteor showers, tracking satellite passes, or monitoring cloud cover throughout the night without a tracking mount. The sky becomes a dynamic canvas rather than a static target.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOptimized for 1\/3\" ZWO Guide \u0026amp; Planetary Cameras\u003c\/h3\u003e\n\u003cp\u003eThis lens is engineered to perfectly match the image circle of 1\/3\" format sensors. This ensures the entire sensor is illuminated without significant vignetting or wasted field, a common issue when pairing lenses with mismatched sensors. It is a direct-fit solution for popular models like the ZWO ASI120MM-S, ASI120MC-S, and ASI224MC, turning them into powerful scientific and surveillance instruments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCS-Mount Standard and Adapter Requirements\u003c\/h3\u003e\n\u003cp\u003eThe lens uses a standard CS-mount thread for direct connection to compatible camera bodies. Note that a C\/CS mount adapter is not included with this lens. To achieve proper focus, you will need the CS-mount adapter that was originally supplied with your ZWO camera, or purchase one separately if you are using a C-mount native camera.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Fit:\u003c\/strong\u003e Screws directly into the CS-mount threads found on many ZWO cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdapter Needed:\u003c\/strong\u003e Requires a C-to-CS adapter ring if your camera body has native C-mount threads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocus Mechanism:\u003c\/strong\u003e Manual focus and aperture control allow you to set and lock the lens for consistent nightly operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of events can I capture with the ZWO 2.1mm 150° lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ultra-wide 150° field of view is ideal for capturing large-scale celestial phenomena. You can record entire meteor showers like the Perseids or Geminids, track the paths of bright fireballs, monitor for transient events like aurora, or simply create time-lapses of the Milky Way rising and setting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich ZWO cameras work best with this 2.1mm lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis lens is designed for cameras with a \u003cstrong\u003e1\/3\" sensor\u003c\/strong\u003e. The most common and recommended pairings are the ZWO ASI120 series (both monochrome and color) and the ASI224MC. Using it on a larger sensor will result in heavy vignetting and an incomplete image circle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I focus the ZWO 2.1mm all-sky lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFocus is achieved manually by turning the lens barrel. For astronomical use, it's best to focus at night on a bright star. Once sharp focus is achieved across the field, you can use the locking screw on the lens to fix its position for long-term, unattended operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a tracking mount to use the ZWO 2.1mm lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, a tracking mount is not necessary. In fact, this lens is designed for static use on a fixed tripod. The 150° field of view is so wide that stars will take hours to drift across the frame, which is perfect for creating all-sky time-lapses and monitoring the sky from a fixed position.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill I need any filters with the ZWO 2.1mm lens for meteor observation?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor most all-sky applications like meteor showers (e.g., the Orionids), you do not need any filters. You want to capture as much light as possible. If you are in a light-polluted area, a simple IR-cut filter might help improve contrast slightly, especially with a color camera like the ASI224MC, but it is not a requirement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat adapter do I need to connect the ZWO 2.1mm lens to my camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis is a CS-mount lens. It will screw directly into a camera that has female CS-mount threads. If your camera has C-mount threads, you will need a \u003cstrong\u003eC-to-CS adapter ring\u003c\/strong\u003e (typically 5mm thick). Most ZWO cameras that this lens is designed for, like the ASI120, come with the necessary adapters, but the lens itself does not include one.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-LENS-2.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e2.1mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField of View\u003c\/td\u003e\n\u003ctd\u003e150°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesigned Sensor Size\u003c\/td\u003e\n\u003ctd\u003e1\/3\" Format\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Type\u003c\/td\u003e\n\u003ctd\u003eCS-Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e150º CS Lens for ASI 1\/3\" Sensors\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967384219933,"sku":"ZWO-LENS-2.1","price":31.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-1-3-inch-2-1mm-150-degree-lens-1__84146.1596910045.1280.1280.jpg?v=1684341533"},{"product_id":"zwo-t2-adapter-11mm","title":"ZWO T2 Female to Female Adapter - 11mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdds exactly 11 mm of spacing to your imaging train\u003c\/li\u003e\n\u003cli\u003eFemale M42x0.75 T2 threads on both sides\u003c\/li\u003e\n\u003cli\u003eConnects two male T-threaded components\u003c\/li\u003e\n\u003cli\u003eBlack anodized aluminum construction minimizes reflections\u003c\/li\u003e\n\u003cli\u003eOriginal replacement part for ZWO ASI1600 series cameras\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO T2 Female to Female Adapter - 11mm\u003c\/h2\u003e\n\u003cp\u003eThe ZWO T2 to T2 11mm Extender provides a precise 11mm of optical path length, connecting two male-threaded components with its standard female M42x0.75 T-threads. This black anodized adapter is the original equipment spacer included with all ZWO ASI1600 series cameras, making it the definitive replacement part for achieving correct back focus with that camera system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAchieve Critical 11mm Spacing\u003c\/h3\u003e\n\u003cp\u003eThis adapter adds exactly 11mm of distance, a critical value for achieving the standard 55mm back focus when using specific ZWO cameras, filter wheels, and off-axis guiders. Its female-to-female design allows you to securely join accessories that both terminate in male T-threads, such as a camera nosepiece and a filter drawer, maintaining perfect optical alignment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDurable M42x0.75 Construction\u003c\/h3\u003e\n\u003cp\u003eMachined from a single piece of black anodized aluminum, the ZWO T2-T2-11 extender is both lightweight and rigid, preventing flexure in the imaging train. The interior surfaces are blackened to absorb stray light and improve contrast by preventing internal reflections from reaching the sensor.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard T-Threads:\u003c\/strong\u003e Features M42x0.75 female threads for universal compatibility with the vast majority of astronomy accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASI1600 Replacement:\u003c\/strong\u003e Serves as a direct, factory-spec replacement for the 11mm spacer originally included with ASI1600 cameras, ensuring you can restore your original imaging configuration perfectly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary use for the ZWO T2-T2-11 11mm extender?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO T2-T2-11 is used to add a precise \u003cstrong\u003e11mm\u003c\/strong\u003e of spacing in an M42x0.75 threaded imaging train. It's most commonly used to help achieve the standard 55mm back focus required by many field flatteners and coma correctors, especially with ZWO cameras like the ASI1600 series.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this the same 11mm spacer that comes with the ZWO ASI1600MM Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is the identical 11mm female-to-female T2 spacer that is included as a stock component with all cameras in the ASI1600 series. It is the official replacement part from ZWO.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I use the ZWO 11mm extender to reach 55mm of back focus with an ASI1600 and a 20mm filter wheel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe standard configuration to achieve 55mm of back focus with an ASI1600 camera and a 20mm thick ZWO filter wheel often uses this extender. The optical path is calculated as follows:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eASI1600 Camera Sensor to Flange: \u003cstrong\u003e6.5mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eZWO EFW (Electronic Filter Wheel): \u003cstrong\u003e20mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eThis T2-T2 Extender: \u003cstrong\u003e11mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eZWO 16.5mm T2 Extender: \u003cstrong\u003e16.5mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis combination totals \u003cstrong\u003e54mm\u003c\/strong\u003e, which is typically within the tolerance for most correctors. A 1mm fine-tuning spacer can be added if needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAre the threads on this ZWO adapter male or female?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO T2-T2-11 extender has \u003cstrong\u003efemale M42x0.75 T-threads on both sides\u003c\/strong\u003e. This allows it to connect two accessories that both have male T-threads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this ZWO 11mm adapter cause vignetting?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter has a clear aperture consistent with the M42 (T2) standard. It is designed to work without vignetting on sensors up to the Four Thirds format, such as the one used in the ASI1600 camera series. It may cause vignetting on full-frame (36mm x 24mm) sensors, which typically require wider M48 or M54 threads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat material is the ZWO T2-T2-11 adapter made of?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis extender is machined from lightweight, durable aluminum and has a black anodized finish to minimize weight and prevent unwanted reflections within your optical train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-T2-T2-11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPN\u003c\/td\u003e\n\u003ctd\u003eZWO T2-T2-11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75 (T2) Female, Both Sides\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e11 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO T2 to T2 11mm Extender\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967384383773,"sku":"ZWO-T2-T2-11","price":25.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-11mm-T2-Adapter-1__18970.1596910045.1280.1280.jpg?v=1684341750"},{"product_id":"zwo-12v-5a-ac-dc-adapter","title":"ZWO 12V 5A AC to DC Power Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e 100-240V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e 12V DC at 5A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector:\u003c\/strong\u003e 5.5mm x 2.1mm Center-Positive\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Cooled Cameras, ASIAIR, AM Mounts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO 12V 5A AC to DC Power Adapter\u003c\/h2\u003e\n\u003cp\u003eThe ZWO 12V 5A AC to DC Power Adapter is the official, manufacturer-recommended solution for a critical astrophotography challenge: unstable or insufficient power. This unit is engineered to provide the consistent 12V voltage and ample 5A current required by ZWO's high-performance thermoelectric cooling systems, ASIAIR controllers, and harmonic drive mounts. It eliminates the dropped frames, connection errors, and inconsistent cooling caused by underpowered or generic supplies, ensuring your equipment performs to its full potential.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eEngineered for 5A High-Current Demand\u003c\/h3\u003e\n\u003cp\u003eA cooled CMOS camera's biggest power draw comes from its thermoelectric cooler (TEC), and ZWO's AM series mounts require stable current for precise tracking. The ZWO 12V 5A adapter delivers a full 60W of power, ensuring the TEC can reach and maintain its target temperature without starving the sensor, and that mount motors can execute slews without stalling. This stable supply is the foundation for low-noise imaging and accurate tracking, preventing thermal fluctuations and motor errors that can ruin a night's work.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUniversal 100-240V Input for Global Use\u003c\/h3\u003e\n\u003cp\u003eFor astronomers who travel to dark-sky sites, the adapter's 100-240V AC input provides essential flexibility. It automatically adjusts to the local line voltage, whether you're at a star party in the US or imaging from a backyard in Europe. This removes the need for a separate, heavy step-down voltage converter, simplifying your travel kit while delivering the same stable 12V DC power to your gear worldwide (a passive plug adapter may be required).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe ZWO Standard 5.5x2.1mm Connector\u003c\/h3\u003e\n\u003cp\u003eZWO has standardized its power inputs around the 5.5mm x 2.1mm center-positive barrel connector, and this adapter is built with that exact plug. This guarantees a secure, electrically sound connection to your ZWO ASI cooled camera, ASIAIR, or AM mount. The design eliminates the guesswork and potential damage associated with using a generic adapter with the wrong polarity or a loose-fitting plug, preventing accidental disconnection in the dark—a small detail that can save an entire imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the ZWO 12V 5A adapter necessary for cooled cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe thermoelectric cooler (TEC) in ZWO cooled cameras requires a stable, high-current power source to maintain a consistent sensor temperature. A standard USB connection cannot supply this power. The 12V 5A adapter ensures the cooler operates effectively, which is essential for reducing thermal noise and producing high-quality, low-noise images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this ZWO adapter with the ASIAIR Plus or ASIAIR Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is the recommended power supply for both the ASIAIR Plus and ASIAIR Pro. It provides the necessary 5A of current to reliably power the ASIAIR unit itself, along with connected ZWO cameras, electronic focusers, and other accessories through its DC output ports.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this ZWO power adapter compatible with the AM3 or AM5 mounts?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The ZWO AM3 and AM5 harmonic drive mounts require a stable 12V power supply capable of handling the current demands of slewing and tracking. This 5A adapter provides ample power for reliable, error-free mount performance under any load.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the ZWO 12V 5A adapter's 100-240V input range?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe wide input voltage range means you can use the adapter in different countries without a voltage converter. It automatically adapts to the local power grid, whether it's 120V in North America or 230V in Europe. You would only need a simple, passive plug adapter to fit the physical wall socket.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the ZWO 5.5x2.1mm connector important?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis specific connector size and its center-positive polarity are the standard for ZWO products. Using the official adapter ensures a perfect physical and electrical fit, preventing accidental disconnections in the dark and protecting your sensitive electronics from damage caused by incorrect polarity or unstable connections from generic adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use a third-party 12V adapter with my ZWO gear?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile other adapters might seem to work, using a non-approved power supply can lead to unstable performance and may void your equipment's warranty. The official ZWO 12V 5A adapter is tested and guaranteed to deliver the clean, stable power required for consistent cooling, tracking, and data transfer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-DC12V5A-US\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e100-240V AC, 50-60Hz, 1.7A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e12V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Power\u003c\/td\u003e\n\u003ctd\u003e60W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Connector\u003c\/td\u003e\n\u003ctd\u003e5.5mm x 2.1mm, Center-Positive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Cord Length\u003c\/td\u003e\n\u003ctd\u003eApproximately 6 ft (1.8m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Cord Length\u003c\/td\u003e\n\u003ctd\u003eApproximately 43 in (1.1m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlug Standard\u003c\/td\u003e\n\u003ctd\u003eAmerican Standard (Type A\/B)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eZWO Cooled Cameras, ASIAIR Plus, ASIAIR Pro, AM3\/AM5 Mounts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO 12V 5A AC to DC Power Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAmerican Standard AC Power Cable\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967385530653,"sku":"ZWO-AC-DC12V5A","price":41.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO-Power-Supply-Cable.jpg?v=1697676690"},{"product_id":"zwo-m48-m48-adapter-16-5mm","title":"ZWO M48 Extension - 16.5mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdds exactly 16.5 mm of spacing to an M48 imaging train\u003c\/li\u003e\n\u003cli\u003eM48x0.75 male and female threads\u003c\/li\u003e\n\u003cli\u003eWide 48 mm aperture prevents vignetting with full-frame sensors\u003c\/li\u003e\n\u003cli\u003eMachined from black anodized aluminum for rigidity and stray light control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO M48 Male to M48 Female Extender - 16.5 mm\u003c\/h2\u003e\n\u003cp\u003eThe ZWO M48 Male to M48 Female Extender adds a precise 16.5 mm of length to your imaging train, solving a critical back focus requirement for many common astrophotography setups. This M48 threaded spacer is the specific component needed to achieve the standard 55 mm back focus distance when combining a ZWO camera with a ZWO filter wheel and off-axis guider.\n\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAchieving the Standard 55 mm Back Focus\u003c\/h3\u003e\n\u003cp\u003eMost field flatteners and reducers require a rigid 55 mm distance from their flange to the camera sensor for optimal edge-of-field star correction. ZWO cameras typically have 17.5 mm of back focus, and their electronic filter wheels add 20 mm. This leaves a 16.5 mm gap that this extender is machined to fill perfectly, eliminating the need to stack multiple adapters and the potential for optical tilt.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eM48 Threads for Unvignetted, Full-Frame Imaging\u003c\/h3\u003e\n\u003cp\u003eThis extender uses M48x0.75 threads on both the male and female sides, maintaining a wide, unvignetted light path from your corrector to your sensor. Unlike narrower T2 (M42) threads, the 48 mm clear aperture is essential for illuminating the corners of full-frame sensors without dimming or clipping the starfield. The single-piece, black anodized aluminum body ensures rigidity and absorbs stray light.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy do I need this specific 16.5 mm ZWO M48 extension?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis \u003cstrong\u003e16.5 mm\u003c\/strong\u003e length is required to achieve the standard \u003cstrong\u003e55 mm\u003c\/strong\u003e back focus when using specific ZWO components together. A typical ZWO camera (17.5 mm) plus a ZWO 2\" EFW (20 mm) plus this 16.5 mm spacer equals exactly 55 mm. It replaces the 21 mm M48-M42 adapter that often comes with ZWO cameras when a filter wheel is in the imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I use the ZWO M48 16.5mm extension with a ZWO filter wheel and OAG?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe correct order from the telescope is: Flattener\/Reducer → ZWO OAG-L → ZWO 2\" EFW → \u003cstrong\u003eZWO 16.5mm M48 Extension\u003c\/strong\u003e → ZWO Camera. This combination maintains the required 55 mm spacing for sharp stars across the field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are M48 threads and why are they important for this ZWO extension?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eM48 threads\u003c\/strong\u003e (also known as \"wide T-threads\" or 2-inch filter threads) have a diameter of 48 mm with a 0.75 mm pitch. They provide a larger clear aperture than older T2 (M42) threads, which is critical for preventing vignetting (darkened corners) on cameras with large sensors, such as full-frame or APS-C formats.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ZWO M48 16.5mm extension threaded for filters?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this is a spacer extension, not a filter cell. It is not designed to have filters threaded directly into it. Filters should be placed in a dedicated filter wheel, filter drawer, or threaded onto the nosepiece of your camera or the front of your reducer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this ZWO 16.5mm spacer compatible with non-ZWO equipment?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. As long as your other components use standard M48x0.75 male and female threads, this extender will connect perfectly. It is a universal part for any imaging train that requires precisely 16.5 mm of M48 spacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the total length added by this ZWO M48 extension?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe extender provides exactly \u003cstrong\u003e16.5 mm\u003c\/strong\u003e of optical path length. The length of the male threads is not counted, as they seat inside the female connector of the next component in your train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-M48-EXT16.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type (Side A)\u003c\/td\u003e\n\u003ctd\u003eM48x0.75 Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type (Side B)\u003c\/td\u003e\n\u003ctd\u003eM48x0.75 Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e16.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO 16.5 mm M48 Male to M48 Female Spacer Extension\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967385596189,"sku":"ZWO-M48-EXT16.5","price":32.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO-M4816.5mm-Extension-1.jpg?v=1697733326"},{"product_id":"zwo-2-5mm-170-lens","title":"ZWO 2.5mm 170° All-Sky Lens - For 1\/2\" Sensors","description":"\u003cul class=\"DAV-feature-list\"\u003e\n  \u003cli\u003e2.5mm Focal Length\u003c\/li\u003e\n  \u003cli\u003e170° All-Sky Field of View\u003c\/li\u003e\n  \u003cli\u003eDesigned for 1\/2\" Format Sensors\u003c\/li\u003e\n  \u003cli\u003eCS-Mount Thread\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n  \u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n  \u003cli\u003eFAQ\u003c\/li\u003e\n  \u003cli\u003eSpecifications\u003c\/li\u003e\n  \u003cli\u003eIn the Box\u003c\/li\u003e\n  \u003cli\u003eDownloads\u003c\/li\u003e\n  \u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n  \u003cli class=\"active\"\u003e\n    \u003cdiv\u003e\n      \u003cdiv class=\"DAV-bg-light\"\u003e\n        \u003cdiv class=\"DAV-section-center\"\u003e\n          \u003ch2\u003eZWO 2.5mm 170° All-Sky Lens - For 1\/2\" Sensors\u003c\/h2\u003e\n          \u003cp\u003eThe ZWO 2.5mm 170° All-Sky CS Lens transforms your astronomy camera into a horizon-to-horizon sentinel, capturing a massive 170-degree field of view in a single frame. This 2.5mm focal length lens is engineered specifically for cameras with a 1\/2\" sensor, such as the ZWO ASI178 and ASI185 series, to monitor meteor showers, track atmospheric phenomena, or conduct sky surveillance.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"DAV-bg-light\"\u003e\n        \u003cdiv class=\"DAV-section\"\u003e\n          \u003ch3\u003eAchieve a 170° All-Sky Perspective\u003c\/h3\u003e\n          \u003cp\u003eThe primary function of this 2.5mm lens is to deliver an immense 170° field of view. This expansive coverage allows you to capture the entire visible sky dome at once, making it the ideal tool for time-lapses of the Milky Way's transit, recording meteor showers like the Perseids or Geminids, or monitoring for transient events like fireballs and satellite flares.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"DAV-bg-light\"\u003e\n        \u003cdiv class=\"DAV-section\"\u003e\n          \u003ch3\u003eOptimized for 1\/2\" Format Sensors\u003c\/h3\u003e\n          \u003cp\u003eThis lens is designed to match the imaging circle of 1\/2\" format sensors. When paired with cameras like the ZWO ASI178MM, ASI178MC, or ASI185MC, it produces a complete, circular all-sky image with minimal vignetting at the sensor's edges. This ensures that the data you collect from horizon to horizon is usable and consistent.\u003c\/p\u003e\n          \u003cul\u003e\n            \u003cli\u003e\n              \u003cstrong\u003eDirect Compatibility:\u003c\/strong\u003e Threads directly onto the CS-mount of compatible ZWO cameras.\n            \u003c\/li\u003e\n            \u003cli\u003e\n              \u003cstrong\u003eSensor Match:\u003c\/strong\u003e The 2.5mm focal length is calculated to project the full 170° field onto the smaller sensor format, preventing wasted field of view or excessive black borders.\n            \u003c\/li\u003e\n          \u003c\/ul\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"DAV-bg-light\"\u003e\n        \u003cdiv class=\"DAV-section\"\u003e\n          \u003ch3\u003eCS-Mount Connection and Considerations\u003c\/h3\u003e\n          \u003cp\u003eThe lens features a standard CS-mount thread for direct attachment to many planetary and guide cameras. However, it's critical to note that if your camera has a C-mount thread, a C-to-CS mount adapter is required to achieve focus. This adapter is not included and must be sourced separately. This is a crucial distinction, as a C-mount camera without the adapter will not reach focus with this lens.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat cameras are compatible with the ZWO 2.5mm All-Sky Lens?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eThis 2.5mm lens is specifically designed for cameras with a \u003cstrong\u003e1\/2\" sensor format\u003c\/strong\u003e and a CS-mount. It is an excellent match for models like the ZWO ASI178MM, ASI178MC, and ASI185MC. It will also work with the ASI120 series.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need any adapters to use the ZWO 2.5mm lens?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eIt depends on your camera's mount. The lens has a \u003cstrong\u003eCS-mount thread\u003c\/strong\u003e. If your camera (like the ASI178) has a native CS-mount, it will attach directly. If your camera uses a C-mount, you will need a C-to-CS mount adapter ring to achieve focus. This adapter is not included.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ZWO 2.5mm lens good for capturing the Geminids meteor shower?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eYes, absolutely. Its 170° field of view makes it perfect for meteor showers. You can point the camera straight up and capture meteors appearing anywhere in the sky without having to aim, making it an ideal setup for automated meteor detection with software like SharpCap or FireCapture.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 2.5mm lens work with a larger sensor, like an APS-C camera?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eNo, this lens is not recommended for sensors larger than 1\/2\". The image circle it projects is too small for larger sensors and will result in severe vignetting, showing only a small illuminated circle in the center of a large black frame.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use filters with the ZWO 170° All-Sky Lens?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eThis lens does not have a standard filter thread on the front or rear element. It is designed for wide-field, unfiltered imaging of the night sky. Attempting to place a filter in the optical path would require a custom solution.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I focus the ZWO 2.5mm lens?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eThe lens has a manual focus ring. You will need to adjust it by hand to achieve sharp stars. It's best to perform this at night, viewing a live feed from the camera on a laptop screen and adjusting the focus until stars appear as tight points of light.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003ctable class=\"DAV-specifications\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eSKU\u003c\/td\u003e\n          \u003ctd\u003eZWO-LENS-2.5\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eFocal Length\u003c\/td\u003e\n          \u003ctd\u003e2.5mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eField of View\u003c\/td\u003e\n          \u003ctd\u003e170°\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMount\u003c\/td\u003e\n          \u003ctd\u003eCS-Mount\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eRecommended Sensor Format\u003c\/td\u003e\n          \u003ctd\u003e1\/2\"\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eWarranty\u003c\/td\u003e\n          \u003ctd\u003e2 Years\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cul class=\"DAV-grid\"\u003e\n      \u003cli class=\"DAV-grid-item\"\u003e\n        \u003cdiv\u003e\n          \u003cp class=\"DAV-item-title\"\u003e170º 2.5mm CS Lens\u003c\/p\u003e\n          \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cul class=\"DAV-grid\"\u003e\n      \u003cli class=\"DAV-grid-item\"\u003e\n        \u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\n          \u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\n            \u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\n          \u003c\/svg\u003e\n          \u003cdiv\u003e\n            \u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/a\u003e\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967385956637,"sku":"ZWO-LENS-2-5","price":31.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-2-5mm-170-degree-lens-1__46794.1596910046.1280.1280.jpg?v=1684341752"},{"product_id":"zwo-ch4-methane-filter-20nm-1-25","title":"ZWO CH4 Methane Filter - 20nm 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eReveals high-altitude detail on Jupiter and Saturn\u003c\/li\u003e\n\u003cli\u003e20nm bandpass centered on the methane absorption line\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" (31.75mm) threaded cell\u003c\/li\u003e\n\u003cli\u003eReduces effects of atmospheric seeing\u003c\/li\u003e\n\u003cli\u003e2-Year ZWO Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO 20nm CH4 Methane Band Filter - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe ZWO CH4 Methane Filter isolates a specific 20nm bandpass deep in the near-infrared spectrum, targeting the strong methane absorption lines in the atmospheres of gas giants. Housed in a standard 1.25\" (31.75mm) threaded cell, this filter is purpose-built to reveal high-altitude clouds and storm systems on Jupiter and Saturn that are completely invisible in visible light.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIsolating Planetary Detail with a 20nm Bandpass\u003c\/h3\u003e\n\u003cp\u003eThe 20nm FWHM (Full Width at Half Maximum) is precisely tuned to the methane (CH4) absorption band. When you image Jupiter, regions rich in methane absorb this wavelength of light and appear dark, while high-altitude features like the Great Red Spot or bright equatorial zones reflect this light strongly, creating dramatic contrast. This allows you to resolve atmospheric stratification and storm structures that are otherwise lost against the planet's brighter, lower-level cloud decks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSeeing-Resistant Imaging with a 1.25\" Filter\u003c\/h3\u003e\n\u003cp\u003eBecause this filter operates in the near-infrared, it leverages a key principle of atmospheric optics: longer wavelengths of light are less susceptible to distortion from air turbulence (\"seeing\"). On nights of average or poor seeing, the ZWO CH4 filter can deliver a steadier, sharper image than a standard luminance or color filter. This stability is critical for capturing fine planetary detail, making this 1.25\" filter an essential tool for dedicated planetary imagers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCompatibility and Use with Monochrome Cameras\u003c\/h3\u003e\n\u003cp\u003eThis is a specialized filter designed for monochrome cameras that have good sensitivity in the near-infrared. While it can be used with some IR-sensitive color cameras, the best results are achieved with a mono sensor where you can optimize exposure for this specific wavelength. The standard 1.25\" threaded cell ensures it fits any standard filter wheel, filter drawer, or 1.25\" nosepiece, making it a seamless addition to your existing imaging train.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Threads:\u003c\/strong\u003e The 1.25\" cell is threaded to screw directly into standard astronomical accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMono Sensor Optimized:\u003c\/strong\u003e Achieves maximum contrast and detail when paired with a sensitive monochrome planetary camera.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtective Case:\u003c\/strong\u003e Includes a durable plastic case to keep the filter safe and clean when not in use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the ZWO CH4 filter change my images of Jupiter's Great Red Spot?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Great Red Spot (GRS) is a high-altitude storm. With the \u003cstrong\u003eZWO CH4 filter\u003c\/strong\u003e, the GRS will appear exceptionally bright against the surrounding, darker methane-rich atmospheric belts. This dramatically increases its contrast and visibility, allowing you to capture its structure even when it appears washed out in visible-light images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat camera do I need to use the ZWO 20nm CH4 filter with my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need an imaging camera with good sensitivity in the near-infrared (around 890nm, where methane absorbs). \u003cstrong\u003eMonochrome planetary cameras\u003c\/strong\u003e are the ideal choice as they typically have higher IR sensitivity than one-shot color cameras. Standard DSLRs are generally not sensitive enough at this wavelength without modification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ZWO CH4 filter for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this filter is designed for imaging only. The human eye is not sensitive to the near-infrared wavelengths that the ZWO CH4 filter transmits, so you would not be able to see anything through it visually.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ZWO CH4 filter help with bad seeing conditions?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe filter passes light in the near-infrared part of the spectrum. These longer wavelengths are less distorted by turbulence in Earth's atmosphere (\"seeing\") compared to shorter, visible-light wavelengths. The result is a more stable image at the sensor, which often translates to sharper final images on nights with unsteady air.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 1.25\" ZWO CH4 filter fit my existing filter wheel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The ZWO CH4 filter is housed in a standard \u003cstrong\u003e1.25\" (31.75mm) threaded cell\u003c\/strong\u003e. It will screw into any filter wheel, filter drawer, or accessory designed to accept standard 1.25\" astronomical filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ZWO CH4 filter useful for planets other than Jupiter and Saturn?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile it is most effective on Jupiter and Saturn due to their prominent methane atmospheres, it can also be used to study the atmospheres of Uranus and Neptune. However, these ice giants are much dimmer and smaller, requiring larger telescopes and longer exposures to achieve good results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-CH4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eCH4 (Methane) Band\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass (FWHM)\u003c\/td\u003e\n\u003ctd\u003e20nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e31.75mm (1.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eThreaded Round Cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended Use\u003c\/td\u003e\n\u003ctd\u003ePlanetary Imaging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO CH4 20nm Methane Filter in 1.25\" Cell\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ePlastic Filter Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload ZWO Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967386022173,"sku":"ZWO-CH4","price":139.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-20nm-CH4-Methane-Filter-1-25-inch-1__16094.1596910046.1280.1280.jpg?v=1684341754"},{"product_id":"zwo-m42-m42-adapter-21mm","title":"ZWO M42 Extension - 21mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdds exactly 21mm of spacing to an M42 optical train\u003c\/li\u003e\n\u003cli\u003eM42x0.75 female threads on one side, male threads on the other\u003c\/li\u003e\n\u003cli\u003eMachined aluminum with a black anodized finish\u003c\/li\u003e\n\u003cli\u003eSolves critical back focus requirements for cameras and correctors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO 21mm M42 to M42 Extension\u003c\/h2\u003e\n\u003cp\u003eThe ZWO 21mm M42 to M42 Extension adds a fixed 21mm of length to any optical train using standard M42x0.75 T-threads. This spacer is a fundamental component for achieving the precise back focus required by field flatteners, coma correctors, and ZWO's own line of cooled cameras which standardize on a 55mm back focus distance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAchieving 55mm Back Focus with a 21mm Spacer\u003c\/h3\u003e\n\u003cp\u003eCorrect spacing is not optional in astrophotography; it's the difference between sharp stars edge-to-edge and distorted, comatic images. This 21mm extension is a key part of the standard ZWO 55mm back focus solution. When combined with a 16.5mm spacer and the 17.5mm sensor-to-flange distance of many ZWO cameras, this 21mm piece completes the required 55mm path, ensuring your corrector performs exactly as designed.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Machining:\u003c\/strong\u003e Machined from black anodized aluminum to maintain optical alignment and eliminate internal reflections that can reduce contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard M42 T-Threads:\u003c\/strong\u003e Features male M42x0.75 threads on one side and female M42x0.75 threads on the other, making it a universal fit for most astronomy cameras, filter wheels, and off-axis guiders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixed, Non-Flexing Length:\u003c\/strong\u003e Unlike variable extenders, this fixed 21mm tube provides a rigid, repeatable connection that prevents tilt in the imaging train.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the ZWO 21mm M42 Extension used for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO 21mm M42 Extension is used to add a precise 21mm of distance in an astrophotography imaging train. Its primary purpose is to help achieve the specific back focus distance required by optical correctors like field flatteners or coma correctors, most of which require a 55mm distance from the corrector's flange to the camera sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I use the ZWO 21mm extension to reach 55mm of back focus with my ZWO camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eMany ZWO cameras have a 17.5mm back focus distance from the front flange to the sensor. To achieve the standard 55mm, you need to add 37.5mm of spacers. This is typically done by combining this \u003cstrong\u003e21mm extension\u003c\/strong\u003e with a 16.5mm extension (55 - 17.5 = 37.5; 21 + 16.5 = 37.5). The exact combination depends on your specific camera and other accessories like filter wheels or off-axis guiders.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAre the threads on the ZWO 21mm M42 Extension the same as T2 threads?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The terms M42, T-thread, and T2-thread all refer to the same metric thread standard: M42x0.75. This 21mm extension is compatible with any accessory that uses this common standard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I stack multiple ZWO 21mm extensions?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile you can physically thread multiple extensions together, it is generally not recommended. Stacking many spacers can introduce potential tilt and flex into your imaging train. It is always better to use a single extension of the correct length if one is available.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 21mm extension fit between my ZWO EFW filter wheel and ASI1600MM Pro camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The ZWO EFW and ASI1600MM Pro both use M42 T-threads. This 21mm extension can be placed between them or elsewhere in the M42 train to achieve the necessary spacing for your specific corrector and telescope configuration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the ZWO 21mm M42 extension made of?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe extension is machined from aluminum and features a black anodized finish. This construction ensures it is lightweight, rigid, and has a non-reflective internal surface to maintain image contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-T2-EXT-21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPN\u003c\/td\u003e\n\u003ctd\u003eZWO T2-EXT-21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Side A\u003c\/td\u003e\n\u003ctd\u003eM42 (T or T2) Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Side B\u003c\/td\u003e\n\u003ctd\u003eM42 (T or T2) Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e21 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e21mm M42 to M42 Extension\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967386579229,"sku":"ZWO-T2-EXT-21","price":25.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO-M42-M42Adapter-21mm-1.jpg?v=1697662917"},{"product_id":"zwo-78mm-holder-ring","title":"ZWO 78mm Holder Ring","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eSecurely mounts ZWO cooled cameras with a 78mm diameter body\u003c\/li\u003e\n\u003cli\u003eCNC-machined for a precise and stable fit\u003c\/li\u003e\n\u003cli\u003eFeatures top and bottom 1\/4\"-20 threads for versatile mounting\u003c\/li\u003e\n\u003cli\u003eSingle M6 locking screw for easy and secure camera installation\u003c\/li\u003e\n\u003cli\u003eLightweight design adds minimal weight to your imaging setup\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO 78mm Holder Ring for Cooled Cameras\u003c\/h2\u003e\n\u003cp\u003eThe ZWO 78mm Holder Ring provides a robust and reliable mounting solution for your 78mm diameter ZWO ASI cooled astronomy camera. This essential accessory ensures your camera is held securely, minimizing flexure and maintaining perfect alignment in your imaging train. Its precision CNC-machined construction guarantees a perfect fit, offering peace of mind that your valuable camera is protected and stable throughout long imaging sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePrecision Machined for a 78mm Secure Fit\u003c\/h3\u003e\n\u003cp\u003eEngineered specifically for ZWO's popular line of cooled cameras, this 78mm holder ring provides a snug and secure fit. The ring is opened by loosening a single, captive M6 screw, allowing you to easily place your camera inside. Once tightened, the ring clamps down firmly on the camera body, creating a stable connection that is critical for sharp, high-resolution astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eVersatile Mounting with 1\/4\"-20 Threads\u003c\/h3\u003e\n\u003cp\u003eIntegration with your existing equipment is straightforward. The ZWO 78mm Holder Ring features standard 1\/4\"-20 female threads on both the top and bottom surfaces. This dual-mount design allows you to attach the ring directly to a tripod, a dovetail bar, or to stack other accessories like a guide scope on top, providing maximum flexibility in how you configure your deep-sky imaging rig.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBottom 1\/4\"-20 Thread:\u003c\/strong\u003e Allows for direct attachment to tripods and universal dovetail plates for secure mounting to your telescope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTop 1\/4\"-20 Thread:\u003c\/strong\u003e Perfect for piggybacking guide scopes or other accessories directly onto the camera assembly, keeping your setup compact and balanced.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBroad Camera Compatibility for ZWO Imagers\u003c\/h3\u003e\n\u003cp\u003eThis holder ring is the standard mounting solution for a wide range of ZWO's most popular cooled cameras. If you own one of the cameras listed below, this 78mm ring is the correct accessory for secure mounting. Please note that it is not compatible with larger body cameras like the ASI071MC Pro or ASI2600 series, which require a larger ring.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible With:\u003c\/strong\u003e ASI1600 Pro, ASI183 Pro, ASI294 Pro, ASI533 Pro, ASI178 Cooled, ASI174 Cooled, and ASI385MC Cooled cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncompatible With:\u003c\/strong\u003e ASI094, ASI128, ASI071 Pro, and ASI2600 cameras (these require the 86mm or 90mm holder ring).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install my ZWO camera in the 78mm holder ring?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstallation is simple. Locate the M6 screw on the side of the ring and loosen it until the ring can be opened. Gently place your 78mm ZWO cooled camera inside the ring, ensuring it is seated correctly. Then, tighten the M6 screw until the camera is held firmly in place. Do not overtighten.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do the 1\/4\"-20 threads on the ZWO 78mm Holder Ring let me do?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 1\/4\"-20 threads are a standard size for photographic and astronomical equipment. The thread on the bottom allows you to attach the ring to a tripod or a dovetail bar on your telescope mount. The thread on top allows you to mount accessories like a small guide scope or a WiFi adapter directly above the camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this ZWO 78mm Holder Ring fit my ASI294 Pro camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the ZWO 78mm Holder Ring is the correct size for the ASI294 Pro, as well as other 78mm body cameras like the ASI1600 Pro, ASI183 Pro, and ASI533 Pro. It provides a secure and stable mounting platform for these models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ZWO 78mm Holder Ring compatible with non-ZWO cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis ring is specifically designed for ZWO cameras with a 78mm body diameter. While it might physically fit another brand's camera with the exact same diameter, proper fit and secure clamping are only guaranteed for the ZWO models listed in the compatibility section.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this ring to mount my ASI1600 Pro and a lens to a tripod?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. This is a very common use case. By attaching this ring to your ASI1600 Pro, you can then mount the entire assembly to a standard photo tripod using the bottom 1\/4\"-20 thread, creating a stable wide-field imaging platform without a telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMy camera is an ASI071MC Pro. Which ring do I need?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ASI071MC Pro has a larger body and is not compatible with this 78mm ring. You will need to purchase the larger ZWO 86mm Holder Ring for a proper fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Diameter\u003c\/td\u003e\n\u003ctd\u003e78 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eCNC Machined Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Locking Mechanism\u003c\/td\u003e\n\u003ctd\u003eM6 Screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Threads\u003c\/td\u003e\n\u003ctd\u003e1\/4\"-20 Female (Top and Bottom)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Camera Series\u003c\/td\u003e\n\u003ctd\u003eZWO ASI1600, ASI183, ASI294, ASI533, ASI178, ASI174, ASI385 (Cooled\/Pro versions)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO 78mm Holder Ring\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967387267357,"sku":"ZWO-RINGD78","price":69.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-78mm-Holder-Ring-1__88485.1596910047.1280.1280.jpg?v=1684341757"},{"product_id":"zwo-90mm-holder-ring","title":"ZWO 90mm Holder Ring","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eEngineered for a precise 90 mm camera body diameter\u003c\/li\u003e\n\u003cli\u003eOfficial fit for ZWO ASI2600 and ASI6200 Pro Cooled Cameras\u003c\/li\u003e\n\u003cli\u003eFeatures a single, oversized M6 locking thumbscrew for fast, secure clamping\u003c\/li\u003e\n\u003cli\u003eProvides a stable mounting base for tripods and dovetail plates\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO 90 mm Holder Ring for ASI Pro Cooled Cameras\u003c\/h2\u003e\n\u003cp\u003eThe ZWO 90 mm Holder Ring provides a precise, secure mounting solution for ZWO cameras with a 90 mm body diameter, including the popular ASI2600 and ASI6200 Pro series. Operation relies on a single, oversized M6 thumbscrew, allowing you to quickly lock down your camera's position without needing tools in the dark.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSecure 90 mm Fit for ASI2600 \u0026amp; ASI6200 Cameras\u003c\/h3\u003e\n\u003cp\u003eThis holder ring is purpose-built for the 90 mm diameter of ZWO's larger-format cooled cameras like the ASI2600 and ASI6200. The exact-fit design ensures a firm, no-slip grip around the camera body, delivering a more stable imaging platform than a single tripod-screw connection and reducing the risk of flexure or rotation during a long imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eRapid M6 Thumbscrew Locking\u003c\/h3\u003e\n\u003cp\u003eField setup is simplified with a single, large M6 thumbscrew that controls the clamping mechanism. This design choice means you can mount or reposition your camera quickly and confidently, even while wearing gloves. There are no small Allen keys to drop or lose in the dark; just a simple, robust locking point.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eChoosing the Right ZWO Ring: 90 mm vs. 78 mm vs. 86 mm\u003c\/h3\u003e\n\u003cp\u003eSelecting the correct holder ring is critical for a secure fit. ZWO produces several sizes for its camera lineup, and they are not interchangeable. This 90 mm model is specifically for their latest generation of large-sensor cameras; check your camera model against the list below before purchasing.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e90 mm Holder Ring (This Model):\u003c\/strong\u003e Correct for the ZWO ASI2600 and ASI6200 series cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e86 mm Holder Ring:\u003c\/strong\u003e Required for larger body cameras such as the ASI094, ASI128, and ASI071 Pro.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e78 mm Holder Ring:\u003c\/strong\u003e Fits the mid-size ZWO cooled cameras, including the ASI1600, ASI183, and ASI294 Pro.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich cameras are compatible with the ZWO 90 mm Holder Ring?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis ring is designed exclusively for ZWO cameras with a \u003cstrong\u003e90 mm body diameter\u003c\/strong\u003e. This includes the ZWO ASI2600MM Pro, ASI2600MC Pro, ASI6200MM Pro, and ASI6200MC Pro.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the ZWO 90 mm Holder Ring fit my ASI1600MM Pro camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The ASI1600 Pro has a smaller body diameter and requires the \u003cstrong\u003eZWO D78 Holder Ring\u003c\/strong\u003e for a proper fit. Using the 90 mm ring would result in a loose, insecure connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach the ZWO 90 mm Holder Ring to a dovetail bar?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe base of the holder ring typically has one or more standard 1\/4\"-20 threaded holes. You can use a 1\/4\"-20 screw to bolt the ring directly to a Vixen or Losmandy style dovetail bar, which then slides into your telescope mount's saddle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ZWO 90 mm Holder Ring to mount my ASI6200MC Pro and a camera lens for wide-field astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an ideal application. By attaching the 90 mm ring to a tripod or a small dovetail bar on a star tracker, you create a very stable platform for wide-field imaging with camera lenses. It supports the weight of the camera body directly, reducing strain on the lens mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eFor my ASI2600MM Pro, is this 90 mm ring more stable than just using the camera's built-in 1\/4\"-20 hole?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. A single screw can act as a pivot point, allowing the camera to rotate slightly if bumped or as cables pull on it. The ZWO 90 mm Holder Ring clamps around the entire camera body, preventing any rotation and providing a much wider, more stable connection to your mount for improved tracking and stability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat tools are required to use the ZWO 90 mm Holder Ring?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo tools are needed to secure the camera inside the ring itself. The large M6 thumbscrew is designed to be tightened by hand. You will only need a screwdriver or Allen key to attach the base of the ring to your dovetail plate or tripod.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-RINGD-90\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eZWO - 2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO 90 mm ASI Cooled Camera Holder Ring\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Manufacturer Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967388053789,"sku":"ZWO-RINGD90","price":83.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-90-mm-Holder-Ring-1__56768.1596910047.1280.1280.jpg?v=1684341540"},{"product_id":"zwo-anti-dew-heater-strip","title":"ZWO Anti-Dew Heater Strip","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eMaintains a clear sensor window on ZWO ASI cooled cameras\u003c\/li\u003e\n\u003cli\u003eConsumes a minimal 4.2 watts of power\u003c\/li\u003e\n\u003cli\u003eUltra-thin 0.2 mm to 0.3 mm profile for a non-intrusive fit\u003c\/li\u003e\n\u003cli\u003eIntegrates directly with camera cooler power via included Y-cord\u003c\/li\u003e\n\u003cli\u003eBacked by a 2-year ZWO warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO Anti-Dew Heater Strip for Cooled ASI Cameras\u003c\/h2\u003e\n\u003cp\u003eThe ZWO Anti-Dew Heater Strip prevents moisture from condensing on your ASI cooled camera's AR sensor window by drawing a consistent 4.2 watts to keep the glass just above the dew point. Its ultra-thin 0.2 mm to 0.3 mm profile installs with a simple adhesive backing, providing essential protection from dew without adding bulk to your imaging train. This heater strip integrates seamlessly with your existing setup, using an included Y-power cord to run in-line with your camera's cooler power supply, and is supported by a 2-year warranty.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eEfficient 4.2W Dew Prevention\u003c\/h3\u003e\n\u003cp\u003eDesigned for field use where power is at a premium, this heater strip provides just enough warmth to combat dew with a minimal power draw of 4.2 watts. It operates on a 12V DC input at 0.35A, allowing it to share power with your camera's cooling system without overloading portable power supplies. This low consumption is the key trade-off, offering protection against common dew formation without the high power draw of larger, multi-element heater systems designed for main objectives.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUltra-Thin 0.2 mm Profile and Simple Installation\u003c\/h3\u003e\n\u003cp\u003eThe heater strip itself is only 0.2 mm to 0.3 mm thick, ensuring it fits cleanly around the sensor window without interfering with filter wheels or other close-tolerance accessories. Installation is straightforward: the adhesive backing secures the strip directly to the camera body around the window. The flexible design conforms to the camera's housing for maximum surface contact and efficient heat transfer.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdhesive Backing:\u003c\/strong\u003e Allows for a secure, semi-permanent installation directly on the camera body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Circuit:\u003c\/strong\u003e Conforms to the circular housing around the camera's sensor window.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Profile:\u003c\/strong\u003e Avoids mechanical conflicts with other accessories in the imaging train.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSeamless Power Integration with the Included Y-Cord\u003c\/h3\u003e\n\u003cp\u003eZWO simplifies power management by including a Y-power cord with the heater strip. This splitter allows the heater and the camera's TEC cooler to run from the same 12V power port, eliminating the need for a separate power supply or extra cables running from your power hub. Simply plug your main power cord into one leg of the \"Y\" and connect the other two ends to the camera cooler and the heater strip for a clean, integrated power solution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install the ZWO Anti-Dew Heater Strip?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstallation is simple. First, clean the surface of your camera around the AR sensor window. Then, peel the protective layer off the heater's adhesive backing and carefully press the strip into place around the window. Use the included zip ties to secure the power cable neatly against the camera body, preventing snags.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat power supply is needed for the ZWO Anti-Dew Heater?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO Anti-Dew Heater requires a \u003cstrong\u003e12V DC power source capable of supplying at least 0.35A\u003c\/strong\u003e. Because it includes a Y-power cord, it's designed to run in parallel with your camera's cooler. Ensure your total power supply can handle the combined load of the cooler and the 4.2W heater strip, especially when powering through a device like an ASIAIR.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this ZWO heater strip work on a non-ZWO camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis strip is specifically designed for the form factor of \u003cstrong\u003eZWO ASI Cooled Cameras\u003c\/strong\u003e. While it may physically fit other cameras, proper performance and fit are only guaranteed on the intended ZWO models. Using it on other brands may result in an improper fit and inefficient heating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Y-power cord for the ZWO heater work?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Y-power cord is a power splitter. It has one female input and two male outputs. You connect your main 12V power cable (from your power supply or ASIAIR) to the female input. You then connect one male output to your camera's cooling power port and the other male output to the dew heater strip's plug.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ZWO Anti-Dew Heater Strip on my 50mm guide scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this heater is not designed for that purpose. It is a small, low-power strip intended to warm the tiny AR window on a cooled camera sensor. It does not have the size or power output required to keep a 50mm objective lens on a guide scope clear of dew.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ZWO Anti-Dew Heater always on?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, whenever it is connected to a 12V power source, the heater strip will be active and drawing its rated 4.2 watts. There is no built-in thermostat or controller; it provides continuous, gentle heating to stay ahead of dew formation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-ANTI-DEW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eZWO ASI Cooled Cameras\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e4.2 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003e12V @ 0.35A DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e0.2 mm - 0.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO Anti-Dew Heating Strip\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eY Power Cord\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZip Ties\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967389397277,"sku":"ZWO-Anti-dew","price":27.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-Anti-dew-heater-strip-1__15717.1642537601.1280.1280.jpg?v=1684341760"},{"product_id":"zwo-asi120mm-mini-mono","title":"ZWO ASI120MM Mini Mono Guide Camera","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e1.2 Megapixel monochrome CMOS sensor (1280 x 960)\u003c\/li\u003e\n\u003cli\u003e3.75µm pixel size for precise guiding and planetary detail\u003c\/li\u003e\n\u003cli\u003ePeak Quantum Efficiency of 80% for high sensitivity\u003c\/li\u003e\n\u003cli\u003eLightweight 0.2 lb, 1.25\" eyepiece form factor\u003c\/li\u003e\n\u003cli\u003eIntegrated ST-4 and USB 2.0 ports\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO ASI120MM Mini Monochrome Astronomy Camera\u003c\/h2\u003e\n\u003cp\u003eThe ZWO ASI120MM Mini combines a sensitive 1.2 MP monochrome sensor with 3.75µm pixels, making it a definitive choice for autoguiding and entry-level planetary imaging. Its peak Quantum Efficiency of 80% and low 4.0e read noise ensure faint guide stars are reliably detected in short exposures. Capturing data through its 12-bit ADC at up to 35 FPS, the ASI120MM Mini delivers smooth, high-contrast video of the Moon and planets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eReliable Guiding with 80% Peak QE\u003c\/h3\u003e\n\u003cp\u003eA guide camera's primary job is to detect stars, and the ASI120MM Mini's monochrome sensor does this with high efficiency. With a peak QE of 80%, the ON Semiconductor AR0130CS sensor gathers a high percentage of incoming photons, allowing you to use shorter guide exposures and track fainter stars. Combined with a low 4.0e read noise, the camera produces a clean signal-to-noise ratio, preventing your guiding software from losing the star and ruining a long-exposure sub.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePlanetary and Lunar Imaging at up to 224 FPS\u003c\/h3\u003e\n\u003cp\u003eWhile designed for guiding, the ASI120MM Mini is a capable planetary imager. The 1280 x 960 sensor is an excellent match for capturing the full disk of Jupiter or Saturn with most long focal length telescopes. For higher-magnification work, you can use a smaller region of interest (ROI) to dramatically increase the frame rate—capturing at 118 FPS at 640x480 resolution allows you to freeze moments of steady seeing, a technique known as \"lucky imaging.\" The camera's USB 2.0 interface provides ample speed for this purpose, simplifying cable management and power requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eASI120MM Mini vs. ASI120MM-S: A Focus on Guiding\u003c\/h3\u003e\n\u003cp\u003eThe ASI120MM-S has a speed advantage for planetary work due to its USB 3.0 interface. The ASI120MM Mini, however, is purpose-built for guiding with a superior physical design.\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm Factor:\u003c\/strong\u003e The Mini's 36 mm diameter, 1.25\" eyepiece-style body slides directly into any off-axis guider (OAG) or guide scope. The square body of the -S model can cause clearance issues with some focusers and filter wheels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e At only 0.2 lb, the Mini adds negligible weight to the imaging train, making it easier to balance your mount and putting less strain on the focuser.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocus Position:\u003c\/strong\u003e The Mini is designed to reach focus at the same position as a typical 1.25\" eyepiece, simplifying setup. Its 8.5mm native back focus and long body provide a greater focus travel range, making it easier to achieve simultaneous focus with your main imaging camera when used in an OAG.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIntegrated ST-4 Port and USB 2.0 Power\u003c\/h3\u003e\n\u003cp\u003eThe ASI120MM Mini simplifies your setup by drawing all power directly from the USB 2.0 port, eliminating the need for a separate DC power supply. The built-in ST-4 port allows for a direct, reliable connection to your equatorial mount's autoguider input. ZWO includes all necessary cables—a 2-meter USB cable for reaching your control computer, a shorter 0.5-meter cable for connecting to an ASIAIR, and an ST-4 cable—so you can start guiding right out of the box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of the ZWO ASI120MM Mini's monochrome sensor for guiding?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA monochrome sensor is significantly more sensitive to light than a color sensor because it does not have a color filter array blocking photons. This allows the \u003cstrong\u003eASI120MM Mini\u003c\/strong\u003e to detect fainter stars with shorter exposures, resulting in more precise and reliable autoguiding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ASI120MM Mini perform for imaging Jupiter with an 8\" f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ASI120MM Mini is an excellent match for this setup. An 8\" SCT at f\/10 has a focal length of around 2000mm, which frames Jupiter well on the camera's 1.2 MP sensor. The 3.75µm pixels are well-suited for planetary imaging. For optimal resolution, you would typically use a 2x Barlow lens to bring the final focal ratio closer to f\/20, which better samples the detail resolved by the telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ZWO ASI120MM Mini for deep-sky imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the ASI120MM Mini is an \u003cstrong\u003euncooled\u003c\/strong\u003e camera and is not recommended for long-exposure deep-sky astrophotography. The sensor's thermal noise would overwhelm faint details in exposures longer than a few seconds. It is designed specifically for high-frame-rate planetary\/lunar imaging and autoguiding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does the ZWO ASI120MM Mini use USB 2.0 instead of USB 3.0?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ASI120MM Mini uses USB 2.0 as it provides more than enough bandwidth for its primary function as a guide camera, which uses short exposures (1-5 seconds). This choice allows for a more compact, lightweight, and power-efficient design focused on the guiding use case. While USB 3.0 offers higher speeds for planetary imaging, USB 2.0 is still capable of high frame rates using smaller regions of interest.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do I need to use the ASI120MM Mini with an Off-Axis Guider (OAG)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe camera's 1.25\" nosepiece slides directly into the prism port of most OAGs. Its slim, 36mm diameter body prevents interference with the main imaging camera's light path. You simply slide the camera in or out of the OAG port to achieve focus on a guide star, then lock it in place.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I attach a lens to the ZWO ASI120MM Mini for wide-field views?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The camera includes an \u003cstrong\u003eM28.5-CS adapter\u003c\/strong\u003e, which allows you to attach standard CS-mount lenses. This turns the ASI120MM Mini into a capable electronic finder or a wide-field camera for capturing meteor showers or constellation portraits.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor\u003c\/td\u003e\n\u003ctd\u003e1\/3\" ON Semiconductor AR0130CS CMOS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e1280 x 960 (1.2 MP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePixel Size\u003c\/td\u003e\n\u003ctd\u003e3.75µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Diagonal\u003c\/td\u003e\n\u003ctd\u003e6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantum Efficiency (Peak)\u003c\/td\u003e\n\u003ctd\u003e80%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Well Capacity\u003c\/td\u003e\n\u003ctd\u003e13,000e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRead Noise\u003c\/td\u003e\n\u003ctd\u003e4.0e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDynamic Range\u003c\/td\u003e\n\u003ctd\u003e82\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eADC\u003c\/td\u003e\n\u003ctd\u003e12-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShutter Type\u003c\/td\u003e\n\u003ctd\u003eElectronic Rolling Shutter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Frame Rate (Full)\u003c\/td\u003e\n\u003ctd\u003e35 FPS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Frame Rate (ROI)\u003c\/td\u003e\n\u003ctd\u003e118 FPS at 640x480, 224 FPS at 320x240\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExposure Range\u003c\/td\u003e\n\u003ctd\u003e64µs - 1000s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Type\u003c\/td\u003e\n\u003ctd\u003eMonochrome, Uncooled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e8.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtective Window\u003c\/td\u003e\n\u003ctd\u003eAR Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Interface\u003c\/td\u003e\n\u003ctd\u003eUSB 2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuide Port\u003c\/td\u003e\n\u003ctd\u003eST-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" Nosepiece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e36mm Diameter x 61mm Length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.2 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-5°C to 45°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOS Compatibility\u003c\/td\u003e\n\u003ctd\u003eMac, Windows, Linux\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eASI120MM Mini Camera Body\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Cover\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2m USB 2.0 Cable\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e0.5m USB 2.0 Cable\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eST-4 Guide Cable\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Extender\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM28.5-CS Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuick Start Guide\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967394771229,"sku":"ZWO-ASI120MINI","price":209.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO-ASI120mini-Side.jpg?v=1699564023"},{"product_id":"zwo-asi174mm-mini-mono","title":"ZWO ASI174MM Mini Mono Guide Camera","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eLarge 1\/1.2\" Sony CMOS Sensor\u003c\/li\u003e\n\u003cli\u003e2.4 MP Resolution (1936 x 1216)\u003c\/li\u003e\n\u003cli\u003e5.86µm Pixel Size\u003c\/li\u003e\n\u003cli\u003e77% Peak Quantum Efficiency\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" Body with ST-4 and USB 2.0 Ports\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO ASI174MM Mini Monochrome Astronomy Camera\u003c\/h2\u003e\n\u003cp\u003eThe ZWO ASI174MM Mini Mono Guide Camera pairs a large 1\/1.2\" Sony CMOS sensor with sensitive 5.86µm pixels to deliver an exceptionally wide field of view for autoguiding. With a resolution of 1936 x 1216, a peak QE of 77%, and low 3.5e read noise, this camera reliably detects faint guide stars even in sparse star fields. The ASI174MM Mini's 13.4mm sensor diagonal makes it the definitive choice for off-axis guiding with long focal length telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 1\/1.2\" Sensor for Dependable Off-Axis Guiding\u003c\/h3\u003e\n\u003cp\u003eThe primary advantage of the ASI174MM Mini is its expansive 11.34mm x 7.13mm sensor. This provides a significantly larger field of view compared to typical 1\/3\" guide cameras, dramatically increasing the probability of finding a suitable guide star within the pick-off prism of an Off-Axis Guider (OAG). For imagers using Schmidt-Cassegrains or Ritchey-Chrétiens, this larger sensor area is not a luxury—it is the most critical factor for reliable, frustration-free autoguiding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e5.86µm Pixels for Stable Tracking in Average Seeing\u003c\/h3\u003e\n\u003cp\u003eWhile many cameras pursue smaller pixels for high-resolution planetary imaging, the ASI174MM Mini's larger 5.86µm pixels are optimized for guiding stability. Larger pixels are less susceptible to the rapid, small-scale movements caused by atmospheric turbulence (\"seeing\"), preventing the autoguider from overcorrecting. This results in smoother tracking and rounder stars in your final image, as the camera guides on the star's centroid rather than chasing atmospheric shimmer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eASI174MM Mini vs. ASI120MM-S: A Guiding Comparison\u003c\/h3\u003e\n\u003cp\u003eFor those deciding on a dedicated guide camera, the choice often comes down to the ASI174MM Mini and the popular ASI120MM-S.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASI120MM-S Advantage:\u003c\/strong\u003e The ASI120MM-S is a proven, highly capable guide camera that is more affordable, making it an excellent starting point for guiding with shorter focal length refractors and guide scopes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASI174MM Mini Advantage:\u003c\/strong\u003e The ASI174MM Mini's 1\/1.2\" sensor physically dwarfs the 1\/3\" sensor in the ASI120MM-S. This translates directly to a wider field and a much higher chance of finding guide stars with an OAG on instruments over 1000mm in focal length. Its larger 5.86µm pixels also provide more stable guiding under typical seeing conditions compared to the 3.75µm pixels of the ASI120MM-S.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eConnectivity and Design: USB 2.0 \u0026amp; ST-4 Port\u003c\/h3\u003e\n\u003cp\u003eThe ASI174MM Mini is housed in a compact 36mm x 61mm body that fits any standard 1.25\" focuser or OAG. It features a dedicated ST-4 autoguiding port for direct connection to your mount and a USB 2.0 port for data transfer and power. While USB 2.0 offers a lower frame rate of 18.4 FPS at full resolution compared to USB 3.0, this is more than sufficient for the 1-5 second exposures typical in autoguiding, ensuring reliable operation without the need for a more complex interface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy choose the ASI174MM Mini over a cheaper guide camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe key reason is the \u003cstrong\u003elarge 1\/1.2\" sensor\u003c\/strong\u003e. If you use an Off-Axis Guider (OAG), especially with a long focal length telescope like an SCT or RC, finding a suitable guide star can be difficult. The ASI174MM Mini's massive field of view makes finding a star significantly easier than with smaller-chip cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ASI174MM Mini's USB 2.0 interface a disadvantage?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNot for its primary purpose of autoguiding. Guiding exposures are typically 1-5 seconds long, meaning a high frame rate is unnecessary. The camera can still capture frames at \u003cstrong\u003e18.4 FPS\u003c\/strong\u003e at full resolution, which is more than enough for guiding and sufficient for basic planetary imaging. The USB 2.0 interface is reliable and requires less power and bandwidth.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ASI174MM Mini perform with an OAG on an 8\" f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis is the exact scenario where the ASI174MM Mini excels. An 8\" SCT has a focal length of around 2000mm, resulting in a very narrow field of view at the OAG's pick-off prism. The camera's large \u003cstrong\u003e13.4mm diagonal sensor\u003c\/strong\u003e maximizes the available area, giving you the best possible chance to locate a guide star without having to rotate the OAG or change your target framing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ASI174MM Mini to image Jupiter or Saturn?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it can function as a capable planetary camera. Its \u003cstrong\u003e5.86µm pixels\u003c\/strong\u003e and high sensitivity are well-suited for capturing details on bright planets. While it doesn't have the high frame rates of a dedicated USB 3.0 planetary camera, it can certainly produce high-quality images of the Moon, Jupiter, and Saturn.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the \"Electronic Rolling Shutter\" mean for guiding?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn electronic rolling shutter exposes the sensor line by line, rather than all at once. For short-exposure planetary imaging of rapidly rotating planets, this can sometimes cause subtle artifacts. However, for autoguiding with typical exposure times of 1 second or longer, it has absolutely no negative effect on performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the ZWO ASI174MM Mini require a separate power supply?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The camera is powered entirely through the \u003cstrong\u003eUSB 2.0 cable\u003c\/strong\u003e connected to your computer or an ASIAIR unit. The ST-4 port is used for sending guide pulse corrections to the mount and does not provide power.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor\u003c\/td\u003e\n\u003ctd\u003e1\/1.2\" Sony CMOS (Monochrome)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePixel Array\u003c\/td\u003e\n\u003ctd\u003e1936 x 1216 (2.4 MP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePixel Size\u003c\/td\u003e\n\u003ctd\u003e5.86 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Dimensions\u003c\/td\u003e\n\u003ctd\u003e11.34 mm x 7.13 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Diagonal\u003c\/td\u003e\n\u003ctd\u003e13.4 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Quantum Efficiency (QE)\u003c\/td\u003e\n\u003ctd\u003e77% @ 520 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReadout Noise\u003c\/td\u003e\n\u003ctd\u003e3.5e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBit Depth\u003c\/td\u003e\n\u003ctd\u003e12-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Frame Rate\u003c\/td\u003e\n\u003ctd\u003e18.4 FPS at 1936 x 1216\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShutter Type\u003c\/td\u003e\n\u003ctd\u003eElectronic Rolling Shutter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExposure Range\u003c\/td\u003e\n\u003ctd\u003e32 µs to 300 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComputer Interface\u003c\/td\u003e\n\u003ctd\u003eUSB 2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuide Port\u003c\/td\u003e\n\u003ctd\u003eST-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" Nosepiece, C-Threads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Window\u003c\/td\u003e\n\u003ctd\u003eAR Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-Camera Storage\u003c\/td\u003e\n\u003ctd\u003e192K byte user-accessible space\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e36 mm x 61 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.3 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-5°C to 45°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUncooled\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eROI Support\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO ASI174 Mini CMOS Camera\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUser Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967396245789,"sku":"ZWO-ASI174MINI","price":559.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO-ASI174mini-Side.jpg?v=1699565020"},{"product_id":"zwo-asi174mm-mono","title":"ZWO ASI174MM Mono","description":"\u003cul class=\"DAV-feature-list\"\u003e\n    \u003cli\u003e\n        IMX174 Sensor\n    \u003c\/li\u003e\n    \u003cli\u003e\n        Pixel Size of 5.86 microns\n    \u003c\/li\u003e\n    \u003cli\u003e\n        QE of 77%\n    \u003c\/li\u003e\n    \u003cli\u003e    \n        USB 3.0\n    \u003c\/li\u003e\n    \u003cli\u003e\n        164 FPS\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n    \u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n    \u003cli\u003eSpecifications\u003c\/li\u003e\n    \u003cli\u003eDiagrams \u0026amp; Ressources\u003c\/li\u003e\n    \u003cli\u003eIn the Box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n    \u003cli class=\"active\"\u003e\n        \u003cdiv\u003e\n            \u003c!-- Title image text --\u003e\n            \u003cdiv class=\"DAV-bg-light\"\u003e\n                \u003c!-- Main Image --\u003e\n                \u003cdiv class=\"DAV-section-center\"\u003e\n                    \u003ch2\u003eZWO ASI174MM - Overview\u003c\/h2\u003e\n                    \u003cp\u003e\n                        The ZWO ASI174MM is a popular choice among astrophotographers, designed around the Sony Exmor IMX174 2.35MP sensor with advanced Pregius global shutter technology. Whether capturing solar, lunar, planetary, or deep-sky objects, this camera offers exceptional performance and reliability.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003c!-- Features Grid --\u003e\n            \u003cdiv class=\"DAV-feature-grid\"\u003e\n                \u003cdiv class=\"DAV-feature-box\"\u003e\n                    \u003ch3\u003e\n                        Sony IMX174 CMOS Sensor\n                    \u003c\/h3\u003e\n                    \u003cp\u003e\n                        Features a 1\/1.2” monochrome sensor with 1936 x 1216 resolution and large 5.86µm pixels for enhanced light sensitivity and detail.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n\n                \u003cdiv class=\"DAV-feature-box\"\u003e\n                    \u003ch3\u003e\n                        Pregius Global Shutter\n                    \u003c\/h3\u003e\n                    \u003cp\u003e\n                        Ensures distortion-free imaging by scanning all pixels simultaneously, making it perfect for solar and lunar imaging under challenging conditions like wind or atmospheric turbulence.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n\n                \u003cdiv class=\"DAV-feature-box\"\u003e\n                    \u003ch3\u003e\n                        Sony Exmor Technology\n                    \u003c\/h3\u003e\n                    \u003cp\u003e\n                        Offers high-speed processing, low noise, and energy efficiency through column-parallel A\/D conversion.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n\n                \u003cdiv class=\"DAV-feature-box\"\u003e\n                    \u003ch3\u003e\n                        Region of Interest (ROI) Mode\n                    \u003c\/h3\u003e\n                    \u003cp\u003e\n                        Enables higher frame rates by capturing up to 16 customizable areas within the effective pixel array.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n\n                \u003cdiv class=\"DAV-feature-box\"\u003e\n                    \u003ch3\u003e\n                        High-Speed Imaging\n                    \u003c\/h3\u003e\n                    \u003cp\u003e\n                        Achieves up to 164.5 fps at 10-bit ADC and 128.2 fps at 12-bit ADC for sharp, detailed images.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n\n                \u003cdiv class=\"DAV-feature-box\"\u003e\n                    \u003ch3\u003e\n                        High Quantum Efficiency (QE)\n                    \u003c\/h3\u003e\n                    \u003cp\u003e\n                        Peak QE value estimated at 77%, providing an excellent signal-to-noise ratio for outstanding image quality.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n\n                \u003cdiv class=\"DAV-feature-box\"\u003e\n                    \u003ch3\u003e\n                        USB 3.0 \u0026amp; ST4 Ports\n                    \u003c\/h3\u003e\n                    \u003cp\u003e\n                        USB 3.0 Port: Provides 5Gb bandwidth for fast data transfer, enabling smooth operation even at maximum frame rates and resolution.\n                    \u003c\/p\u003e\n                    \u003cp\u003e\n                        ST4 Port: Connects directly to your mount’s autoguide port for precise guiding during long exposure astrophotography.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n\n                \u003cdiv class=\"DAV-feature-box\"\u003e\n                    \u003ch3\u003e\n                        Back Focus Flexibility \n                    \u003c\/h3\u003e\n                    \u003cp\u003e\n                        Remove the T2 11mm ring to achieve a compact back focus of just 6.5mm.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003cdiv class=\"DAV-section-container\"\u003e\n                \u003cdiv class=\"DAV-section-text\"\u003e\n                    \u003ch3\u003e\n                        Setup Instructions\n                    \u003c\/h3\u003e\n                    \u003col\u003e\n                        \u003cli\u003e\n                            Connect the Camera: Use the USB 3.0 interface for high-speed, stable data transmission.\n                        \u003c\/li\u003e\n                        \u003cli\u003e\n                            Integrate with Mount: Utilize the ST4 port for seamless autoguiding during your imaging sessions.\n                        \u003c\/li\u003e\n                        \u003cli\u003e\n                            Optimize Imaging: Experiment with Region of Interest (ROI) mode to capture faster frame rates for specific celestial targets.\n                        \u003c\/li\u003e\n                        \u003cli\u003e\n                            Adjust Back Focus: For precise setups, remove the T2 ring to accommodate shorter optical paths.\n                        \u003c\/li\u003e\n                    \u003c\/ol\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003cdiv class=\"DAV-section-container\"\u003e\n                \u003cdiv class=\"DAV-section-text\"\u003e\n                    \u003ch3\u003e\n                        Other information\n                    \u003c\/h3\u003e\n                    \u003cp\u003e\n                        The ZWO ASI174MM stands out due to its advanced global shutter design, eliminating focal plane distortions often seen in moving targets or unstable conditions. This makes it ideal for solar and lunar imaging, where fine details are crucial.                    \n                    \u003c\/p\u003e\n                    \u003cp\u003e\n                        With its high-speed imaging capability, ROI mode, and exceptional quantum efficiency, the ASI174MM ensures clear, sharp captures of faint deep-sky objects and bright planetary surfaces alike. The Pregius global shutter technology and Exmor architecture work together to reduce noise, enhance speed, and minimize power consumption, making this camera a favorite among serious astrophotographers.\n                    \u003c\/p\u003e\n                    \u003cp\u003e\n                        For those seeking high performance, versatility, and precision, the ZWO ASI174MM delivers a seamless astrophotography experience with professional-grade results.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/li\u003e\n\n\n    \u003cli\u003e\n        \u003ctable class=\"DAV-specifications\"\u003e\n            \u003ctbody\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        Sensor\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        CMOS IMX174\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        Read Noise\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        3.5e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        Sensor Size\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        1\/1.2\" (11.3x7.1mm)\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        Full Well\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        32Ke\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        Resolution\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        1936x1216\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        QE\n                    \u003c\/td\u003e   \n                    \u003ctd\u003e\n                        77%\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        ADC\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        12bit\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        USB\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        3.0\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        Pixel Size\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        5.86um\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        FPS\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        164\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n            \u003c\/tbody\u003e\n        \u003c\/table\u003e\n    \u003c\/li\u003e\n\n    \u003cli\u003e\n        \u003ch2\u003eAstrophotography Performance\u003c\/h2\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASI174MM_-_Performance.webp?v=1738097521\" alt=\"ASI174MM - Performance\"\u003e \n        \u003ch2\u003eMechanical Diagram\u003c\/h2\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASI174MM_-_Mechanical_Diagram.webp?v=1738097521\" alt=\"ASI174MM - Mechanical Diagram\"\u003e \n        \u003ch2\u003eHigh QE\u003c\/h2\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASI174MM_-_High_QE.webp?v=1738097521\" alt=\"\"\u003e\n        \u003ch2\u003eUSB\u003c\/h2\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASI174MM_-_USB.webp?v=1738097521\" alt=\"ASI174MM - USB\"\u003e \n        \u003ch2\u003eBack Focus\u003c\/h2\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASI174MM_-_Back_Focus.webp?v=1738097520\" alt=\"ASI174MM - Back Focus\"\u003e \n        \u003ch2\u003eReference Images\u003c\/h2\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASI174MM_-_Ref_1.webp?v=1738097520\" alt=\"ASI174MM - Ref 1\"\u003e \n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASI174MM_-_Ref_2.webp?v=1738097521\" alt=\"ASI174MM - Ref 2\"\u003e \n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASI174MM_-_Ref_3.webp?v=1738097520\" alt=\"ASI174MM - Ref 3\"\u003e \n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASI174MM_-_Ref_4.webp?v=1738097521\" alt=\"ASI174MM - Ref 4\"\u003e \n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASI174MM_-_Ref_5.webp?v=1738097521\" alt=\"ASI174MM - Ref 5\"\u003e \n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASI174MM_-_Ref_6.webp?v=1738097521\" alt=\"ASI174MM - Ref 6\"\u003e\n    \u003c\/li\u003e\n\n    \u003cli\u003e\n        \u003cul class=\"DAV-grid\"\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASI174MM_-_Camera_Body.png?v=1738097521\" alt=\"ASI174MM - In The Box\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003e\n                        Camera Body\n                    \u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASI174MM_-_ST4.png?v=1738097521\" alt=\"ASI174MM - In The Box\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003e\n                        ST4 Cable\n                    \u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASI174MM_-_USB3.0.png?v=1738097521\" alt=\"ASI174MM - In The Box\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003e\n                        USB 3.0 Cable (2m)\n                    \u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASI174MM_-_Nosepiece.png?v=1738097521\" alt=\"ASI174MM - In The Box\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003e\n                        1.25\" Nosepiece\n                    \u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASI174MM_-_Cover.png?v=1738097520\" alt=\"ASI174MM - In The Box\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003e\n                        1.25\" Cover\n                    \u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASI174MM_-_Quick_Guide.png?v=1738097521\" alt=\"ASI174MM - In The Box\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003e\n                        Quick Guide\n                    \u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003c!-- Add more items as needed --\u003e\n        \u003c\/ul\u003e\n    \u003c\/li\u003e\n\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967398768925,"sku":"ZWO-ASI174MM","price":699.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-ASI174MM-Mono-1__46344.1596910049.1280.1280.jpg?v=1684341549"},{"product_id":"zwo-asi183mc-color","title":"ZWO ASI183MC Color","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e20.2 Megapixel 1\" Sony IMX183 BSI CMOS Sensor\u003c\/li\u003e\n\u003cli\u003e2.4µm pixels for high-resolution planetary and solar system imaging\u003c\/li\u003e\n\u003cli\u003e19 FPS at full 5496 x 3672 resolution\u003c\/li\u003e\n\u003cli\u003e1.6e low read noise and 84% peak QE\u003c\/li\u003e\n\u003cli\u003eUSB 3.0 and ST-4 guide port connectivity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO ASI183MC USB3.0 Color Astronomy Camera\u003c\/h2\u003e\n\u003cp\u003eThe ZWO ASI183MC combines a high-resolution 20.2 MP sensor with small 2.4µm pixels, making it a formidable tool for capturing fine detail on the Moon and planets. Its 1-inch back-illuminated Sony sensor achieves a peak Quantum Efficiency of 84% with only 1.6e of read noise, preserving faint signals in your raw data. At full 5496 x 3672 resolution, the camera streams at 19 FPS over its USB 3.0 interface, fast enough for lucky imaging techniques that freeze atmospheric turbulence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e20.2 MP Resolution from a 1-inch BSI Sensor\u003c\/h3\u003e\n\u003cp\u003eThe core of the ASI183MC is its Sony IMX183 back-illuminated CMOS sensor, which offers a massive 5496 x 3672 pixel array in a 1-inch format. This combination of high resolution and a large sensor diagonal of 15.86 mm lets you frame the entire lunar disc with a short refractor or capture intricate detail within Jupiter's cloud bands with a long focal-length SCT. The back-illuminated structure places wiring behind the photodiode, maximizing photon collection to reach a peak QE of 84%.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eHigh-Speed Imaging at 19 FPS\u003c\/h3\u003e\n\u003cp\u003eTo overcome atmospheric seeing, planetary imagers rely on capturing thousands of frames in a short time, and the ASI183MC is built for this task. It delivers 19 FPS at its full 20.2 MP resolution and can be pushed to 80.10 FPS at a 1920x1080 Region of Interest (ROI). This speed, enabled by the USB 3.0 interface, is critical for capturing those fleeting moments of perfect seeing that reveal the sharpest details on planetary surfaces.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Resolution:\u003c\/strong\u003e 5496×3672 at 19 FPS (12-bit) for maximum detail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlanetary ROI:\u003c\/strong\u003e 1280×720 at 103.23 FPS (12-bit) for ultra-fast capture of smaller targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep Sky ROI:\u003c\/strong\u003e 3840×2160 (4K) at 36.12 FPS (12-bit) for capturing smaller nebulae or globular clusters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eTrade-offs of the Uncooled 2.4µm Pixel Design\u003c\/h3\u003e\n\u003cp\u003eThe ASI183MC is an uncooled camera, which makes it compact, lightweight at just 0.26 lbs, and simple to power in the field. This design is ideal for short-exposure solar, lunar, and planetary imaging where thermal noise is negligible. However, for multi-minute exposures of faint deep-sky objects, the lack of cooling will result in higher thermal noise compared to a dedicated cooled camera. The small 2.4µm pixels deliver exceptional resolution but require stable seeing and precise focusing to fully exploit their potential, and they pair best with telescopes operating at shorter focal ratios to avoid oversampling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eASI183MC vs. ASI183MM: Color Simplicity vs. Monochrome Sensitivity\u003c\/h3\u003e\n\u003cp\u003eThe primary difference between the ASI183MC and its monochrome sibling, the ASI183MM, is the sensor's Bayer matrix. The ASI183MM offers higher ultimate sensitivity and resolution because it lacks the color filter array, allowing every pixel to capture all incoming light. This makes it the superior choice for advanced imagers using filter wheels for LRGB or narrowband imaging. The ASI183MC, however, provides the significant advantage of one-shot color capture. You get a full-color image in a single exposure, drastically simplifying the acquisition and processing workflow, which is a major benefit for planetary imaging sessions where conditions can change rapidly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ASI183MC perform on Jupiter with an 8\" f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor planetary imaging, the optimal focal ratio is typically 5 to 7 times the camera's pixel size. With the ASI183MC's 2.4µm pixels, you should aim for a focal ratio between f\/12 and f\/17. On an 8\" f\/10 SCT, you would use a 1.5x or 2x Barlow lens to achieve this ideal image scale, allowing you to resolve fine details in Jupiter's cloud bands under good seeing conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ZWO ASI183MC for imaging the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the ASI183MC is sensitive enough to capture bright deep-sky objects like the Orion Nebula (M42) using a series of short exposures (e.g., 30-60 seconds) that can be stacked later. However, as an uncooled camera, it will exhibit more thermal noise on long exposures than a cooled model, which may limit its ability to capture the faintest outer nebulosity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"back-illuminated\" (BSI) mean for the ASI183MC?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA \u003cstrong\u003eBack-Illuminated Sensor (BSI)\u003c\/strong\u003e places the metal wiring layer below the light-sensitive photodiodes, rather than above them. This design prevents the wiring from blocking incoming photons, significantly increasing the sensor's light-gathering efficiency. For the ASI183MC, this contributes to its high peak Quantum Efficiency of 84%.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need an IR Cut filter with the ZWO ASI183MC?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Like most color CMOS cameras, the ASI183MC's sensor is sensitive to infrared (IR) light that the human eye cannot see. To achieve accurate colors and prevent star bloat, it is essential to use an IR Cut or Luminance filter that blocks this unwanted wavelength. This filter is typically threaded onto the camera's 1.25\" nosepiece.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the ASI183MC be used as a guide camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the ASI183MC has a standard \u003cstrong\u003eST-4 guide port\u003c\/strong\u003e and high sensitivity, making it technically capable of guiding, its 20.2 MP resolution is generally overkill for this purpose. Guiding requires finding and tracking a single star, and the large files generated by the ASI183MC would slow down the process unnecessarily. A dedicated guide camera with a smaller sensor is a more efficient choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the back focus of the ZWO ASI183MC?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe native back focus for the ZWO ASI183MC is \u003cstrong\u003e6.5 mm\u003c\/strong\u003e from the front of the M42 female threads to the sensor. This short distance is common for uncooled planetary cameras and is important to know if you plan to use it with accessories like filter drawers or off-axis guiders in a deep-sky setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor\u003c\/td\u003e\n\u003ctd\u003e1\" Sony IMX183 BSI CMOS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e5496 x 3672 (20.2 MP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePixel Size\u003c\/td\u003e\n\u003ctd\u003e2.4 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Dimensions\u003c\/td\u003e\n\u003ctd\u003e13.19 mm x 8.81 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Diagonal\u003c\/td\u003e\n\u003ctd\u003e15.86 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Quantum Efficiency\u003c\/td\u003e\n\u003ctd\u003e84%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Well Capacity\u003c\/td\u003e\n\u003ctd\u003e15,000e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRead Noise\u003c\/td\u003e\n\u003ctd\u003e1.6e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShutter Type\u003c\/td\u003e\n\u003ctd\u003eElectronic Rolling Shutter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Frame Rate (12-bit)\u003c\/td\u003e\n\u003ctd\u003e19 FPS at 5496x3672\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBit Depth\u003c\/td\u003e\n\u003ctd\u003e12-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExposure Range\u003c\/td\u003e\n\u003ctd\u003e32 µs to 2000 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Type\u003c\/td\u003e\n\u003ctd\u003eColor, Uncooled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eUSB 3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuide Port\u003c\/td\u003e\n\u003ctd\u003eST-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e6.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003e1.25\", 2\", M42x0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e62 mm x 36 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.26 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-5°C to 45°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOS Compatibility\u003c\/td\u003e\n\u003ctd\u003eMac, Windows, Linux\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO ASI183MC CMOS Camera User Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967400309021,"sku":"ZWO-ASI183MC","price":709.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-ASI183MC-Color-1__45315.1596910050.1280.1280.jpg?v=1684341551"},{"product_id":"zwo-asi183mc-pro-color","title":"ZWO ASI183MC Pro Color","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e20.2 Megapixel 1\" Sony IMX183 BSI CMOS Sensor\u003c\/li\u003e\n\u003cli\u003e2.4µm pixels for high-resolution imaging with short focal length telescopes\u003c\/li\u003e\n\u003cli\u003eTwo-stage TEC cooling reduces sensor noise for long exposures\u003c\/li\u003e\n\u003cli\u003e256MB DDR3 buffer for stable, high-speed data transfer\u003c\/li\u003e\n\u003cli\u003ePeak Quantum Efficiency of 84% captures faint signal efficiently\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO ASI183MC Pro Cooled Color Astronomy Camera\u003c\/h2\u003e\n\u003cp\u003eThe ZWO ASI183MC Pro combines a high-resolution 20.2 MP Sony IMX183 sensor with small 2.4µm pixels, making it a definitive choice for capturing fine detail in nebulae and galaxies with short-focal-length refractors. Its back-illuminated sensor architecture achieves a peak Quantum Efficiency of 84% with readout noise as low as 1.6e, ensuring faint structures are recorded with a high signal-to-noise ratio. A 256MB DDR3 memory buffer ensures stable data transfer at up to 19 fps at full resolution, eliminating dropped frames during critical acquisition sequences.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eHigh-Resolution Imaging with 2.4µm Pixels\u003c\/h3\u003e\n\u003cp\u003eThe ASI183MC Pro's core strength is its 5496 x 3672 pixel array, which delivers an immense field for framing large targets or cropping into smaller regions without sacrificing detail. The 2.4µm pixel size is an excellent match for wide-field refractors and astrographs under 500mm focal length, achieving high-resolution sampling without excessive barlows or focal extenders. This combination allows you to resolve intricate details in targets like the wispy filaments of the Cygnus Loop (NGC 6960) or the dust lanes in Bode's Galaxy (M81).\u003c\/p\u003e\n\u003cp\u003eThe small pixel size is a trade-off; it demands accurate guiding and good seeing conditions to realize its full potential. When those conditions are met, the level of detail resolved by the ASI183MC Pro rivals that of cameras with much larger, more expensive sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e84% QE from a 1\" Back-Illuminated Sensor\u003c\/h3\u003e\n\u003cp\u003eThis camera uses a back-illuminated (BSI) Sony CMOS sensor, which moves the sensor's wiring layer behind the photodiodes instead of in front of them. This design removes obstructions from the light path, dramatically increasing sensitivity and leading to a peak Quantum Efficiency of 84%. You capture a higher percentage of incoming photons, which translates to shorter total integration times to achieve a clean, noise-free image of faint deep-sky objects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eTwo-Stage Cooling and 256MB DDR3 Buffer\u003c\/h3\u003e\n\u003cp\u003eFor long-exposure astrophotography, controlling thermal noise is critical. The ASI183MC Pro uses a two-stage thermoelectric cooler (TEC) that requires a 12V at 3A power source to actively reduce the sensor temperature, significantly lowering dark current noise. This regulated cooling, combined with the integrated anti-dew heater, ensures consistent, low-noise performance across imaging sessions in a wide range of humidity and temperatures from -5°C to 45°C.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStable Data Transfer:\u003c\/strong\u003e The onboard 256MB DDR3 buffer acts as a high-speed cache, preventing data loss and frame dropping that can occur when a computer's resources are strained. This is especially important for planetary \"lucky imaging\" at high frame rates or when running on less powerful field computers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Amp Glow:\u003c\/strong\u003e The buffer and associated firmware work together to minimize amplifier glow, a common artifact in long exposures, resulting in cleaner raw frames that are easier to process.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eASI183MC Pro vs. ASI533MC Pro: A Comparison\u003c\/h3\u003e\n\u003cp\u003eWhen choosing a 1-inch format color camera, the ASI533MC Pro is a frequent alternative. The best choice depends entirely on your telescope and primary imaging goals.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eZWO ASI533MC Pro Advantage:\u003c\/strong\u003e The ASI533MC Pro has larger 3.76µm pixels and a higher full well capacity of 50,000e. This makes it more sensitive and forgiving of guiding errors, and its 14-bit ADC provides greater dynamic range. Its square sensor is also beneficial for framing many deep-sky objects and simplifies creating mosaics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZWO ASI183MC Pro Advantage:\u003c\/strong\u003e The ASI183MC Pro's primary advantage is its 20.2 MP resolution. Its smaller 2.4µm pixels provide much better image sampling on short focal length instruments, resolving finer detail without needing a Barlow lens. If you own a wide-field refractor and prioritize resolution, the ASI183MC Pro is the superior technical match.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of telescope is the ZWO ASI183MC Pro best for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO ASI183MC Pro excels when paired with \u003cstrong\u003eshort focal length refractors and astrographs\u003c\/strong\u003e (typically 250mm to 500mm). Its small 2.4µm pixels achieve a high-resolution image scale with these instruments, making it ideal for capturing wide-field views of large nebulae with fine detail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ASI183MC Pro perform on Jupiter with an 8\" f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor planetary imaging, the ideal focal ratio is 5 to 7 times the camera's pixel size. For the ASI183MC Pro's 2.4µm pixels, this means an optimal focal ratio is between f\/12 and f\/16.8. On an 8\" f\/10 SCT, you would get excellent results by adding a \u003cstrong\u003e1.5x Barlow lens\u003c\/strong\u003e to bring your system to f\/15, which is right in that sweet spot for resolving fine detail in Jupiter's cloud bands under good seeing conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I image the full Andromeda Galaxy (M31) with the ASI183MC Pro and a 400mm telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the Andromeda Galaxy is too large to fit in a single frame. The ASI183MC Pro sensor is 13.2mm wide. On a 400mm telescope, this yields a horizontal field of view of about 1.89 degrees. Since M31 spans about 3 degrees, you would need to create a \u003cstrong\u003e2-panel mosaic\u003c\/strong\u003e to capture the entire galaxy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the 256MB DDR3 buffer do in the ASI183MC Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 256MB DDR3 buffer is an internal memory cache that ensures reliable data transfer from the camera to your computer. It prevents dropped frames during high-speed planetary imaging and stabilizes data flow over slower USB 2.0 connections. This buffer also helps to significantly reduce amplifier glow artifacts during long deep-sky exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eShould I get the color ASI183MC Pro or the monochrome ASI183MM Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eChoose the \u003cstrong\u003eASI183MC Pro (Color)\u003c\/strong\u003e for simplicity and ease of use, as you can capture full-color images in a single session. Choose the \u003cstrong\u003eASI183MM Pro (Monochrome)\u003c\/strong\u003e if your priority is maximum detail and scientific-grade imaging. The mono version offers higher resolution and the flexibility to shoot with narrowband filters (like H-alpha and OIII), but requires the additional complexity and cost of a filter wheel and filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat power supply do I need for the ASI183MC Pro's cooler?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe camera's two-stage TEC cooler requires an external power source to function. You will need a DC power supply that can provide \u003cstrong\u003e12V at a minimum of 3A\u003c\/strong\u003e. The camera body itself is powered via the USB 3.0 connection, but the cooler will not turn on without this separate 12V supply.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor\u003c\/td\u003e\n\u003ctd\u003e1\" Sony IMX183 BSI CMOS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e5496 x 3672 (20.2 MP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePixel Size\u003c\/td\u003e\n\u003ctd\u003e2.4µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Dimensions\u003c\/td\u003e\n\u003ctd\u003e13.2mm x 8.8mm (15.86mm diagonal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantum Efficiency (Peak)\u003c\/td\u003e\n\u003ctd\u003e84%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Well Capacity\u003c\/td\u003e\n\u003ctd\u003e15,000e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReadout Noise\u003c\/td\u003e\n\u003ctd\u003e1.6e - 3.0e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBit Depth\u003c\/td\u003e\n\u003ctd\u003e12-Bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Frame Rate\u003c\/td\u003e\n\u003ctd\u003e19 fps at 5496x3672\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShutter Type\u003c\/td\u003e\n\u003ctd\u003eElectronic Rolling Shutter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling System\u003c\/td\u003e\n\u003ctd\u003eTwo-Stage TEC, Cooled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnti-Dew Heater\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Buffer\u003c\/td\u003e\n\u003ctd\u003e256MB DDR3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExposure Range\u003c\/td\u003e\n\u003ctd\u003e32µs to 2000s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e6.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Interface\u003c\/td\u003e\n\u003ctd\u003eUSB 3.0 \/ USB 2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuide Port\u003c\/td\u003e\n\u003ctd\u003eST-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003eM42x0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption (Cooler)\u003c\/td\u003e\n\u003ctd\u003e12V at 3A Max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption (Camera)\u003c\/td\u003e\n\u003ctd\u003e650mA at 5V (via USB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-5°C to 45°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e78mm Diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.9 lb.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOS Compatibility\u003c\/td\u003e\n\u003ctd\u003eWindows, Mac, Linux\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO ASI183 CMOS Camera User Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967401849117,"sku":"ZWO-ASI183MC-P","price":1129.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-ASI183MC-Pro-Color-1__28552.1596910050.1280.1280.jpg?v=1684341774"},{"product_id":"zwo-asi183mm-mono","title":"ZWO ASI183MM Mono","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e20.2 Megapixel (5496 x 3672) 1\" Monochrome CMOS Sensor\u003c\/li\u003e\n\u003cli\u003e2.4µm Pixel Size for High-Resolution Sampling\u003c\/li\u003e\n\u003cli\u003e84% Peak Quantum Efficiency (BSI Sensor)\u003c\/li\u003e\n\u003cli\u003e1.6e Low Readout Noise\u003c\/li\u003e\n\u003cli\u003e19 FPS at Full 20.2 MP Resolution\u003c\/li\u003e\n\u003cli\u003eUSB 3.0 and ST-4 Guiding Ports\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO ASI183MM USB3.0 Monochrome Astronomy Camera\u003c\/h2\u003e\n\u003cp\u003eThe ZWO ASI183MM Mono combines a high-resolution 20.2 MP (5496 x 3672) Sony 1\" CMOS sensor with small 2.4µm pixels, making it ideal for detailed imaging with short-focal-length instruments. Its back-illuminated design achieves a peak Quantum Efficiency of 84% and maintains low 1.6e read noise, capturing faint signals with high fidelity. At full resolution, the camera delivers 19 frames per second over its USB 3.0 interface, providing the speed needed for high-resolution lunar, solar, and planetary imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eHigh-Resolution Sampling with 2.4µm Pixels\u003c\/h3\u003e\n\u003cp\u003eThe ASI183MM's 2.4µm pixels are perfectly suited for modern, short focal length refractors and imaging Newtonians. This combination allows you to achieve high-resolution image sampling without needing a Barlow lens, capturing fine details in nebulae and galaxies. The massive 20.2 MP resolution gives you the flexibility to frame large targets or crop aggressively on smaller objects without sacrificing image quality.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e84% Peak QE from a Back-Illuminated Sensor\u003c\/h3\u003e\n\u003cp\u003eThe Sony IMX183 sensor is a back-illuminated (BSI) design, which places the sensor's wiring behind the photodiodes. This architecture maximizes light collection, pushing the peak Quantum Efficiency to 84% and enabling over 60% sensitivity in the critical Hydrogen-alpha line. As an uncooled camera, the ASI183MM excels at shorter exposures for lucky imaging and narrowband work, though thermal noise will become a factor on multi-minute exposures of faint deep-sky objects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eASI183MM vs. ASI183MC: The Monochrome Advantage at 20.2 MP\u003c\/h3\u003e\n\u003cp\u003eWhile its color counterpart, the ASI183MC, simplifies imaging with one-shot-color convenience, the ASI183MM Mono holds a distinct advantage in sensitivity and resolution. The monochrome sensor captures every incoming photon, contributing to its higher 84% peak QE. Without a Bayer color filter array, the ASI183MM resolves finer detail and is the clear choice for advanced LRGB and narrowband imaging with separate filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e19 FPS at Full Resolution for Lucky Imaging\u003c\/h3\u003e\n\u003cp\u003eWhile capable of deep-sky work, the ASI183MM is also a high-speed planetary and solar system imager. It can capture full-resolution 20.2 MP frames at 19 fps, fast enough to freeze moments of steady seeing. By defining a smaller Region of Interest (ROI), you can increase speeds dramatically, reaching 80.10 fps at 1920x1080 or 117.30 fps at 1280x720 to capture thousands of frames on Jupiter or Saturn in minutes.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Frame (5496x3672):\u003c\/strong\u003e 19 fps at 12-bit ADC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4K UHD (3840x2160):\u003c\/strong\u003e 36.12 fps at 12-bit ADC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull HD (1920x1080):\u003c\/strong\u003e 70.48 fps at 12-bit ADC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eConnectivity and Mechanicals with 6.5mm Back Focus\u003c\/h3\u003e\n\u003cp\u003eThe ASI183MM features a robust and standardized connection scheme for direct integration into your existing imaging train. The lightweight 0.26 lb. body minimizes focuser strain and balance issues.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelescope Interface:\u003c\/strong\u003e Standard M42x0.75 female threads provide a secure connection to most focusers, filter wheels, and off-axis guiders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack Focus:\u003c\/strong\u003e A native back focus of 6.5mm makes it easy to place within optical trains that have tight spacing requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eData and Guiding:\u003c\/strong\u003e A USB 3.0 port ensures reliable, high-speed data transfer, while a dedicated ST-4 port allows the camera to be used for autoguiding.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ZWO ASI183MM good for both planetary and deep-sky imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the ASI183MM is a highly versatile camera. Its high frame rate of \u003cstrong\u003e19 fps at 20.2 MP\u003c\/strong\u003e makes it excellent for \"lucky imaging\" of the Moon, Sun, and planets. Its high sensitivity (\u003cstrong\u003e84% QE\u003c\/strong\u003e) and low read noise (\u003cstrong\u003e1.6e\u003c\/strong\u003e) also make it very capable for capturing deep-sky objects, especially with narrowband filters, though its uncooled design is best suited for shorter exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ASI183MM's 2.4µm pixel size work with a short focal length refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe small \u003cstrong\u003e2.4µm pixels\u003c\/strong\u003e are an excellent match for short focal length instruments (e.g., 250mm-500mm). This combination achieves a high-resolution image scale, allowing you to capture fine detail without needing a Barlow or Powermate. It effectively turns a wide-field refractor into a high-resolution deep-sky imaging system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAs an uncooled camera, what are the limitations of the ASI183MM for long-exposure imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary limitation is thermal noise. Without active cooling, the sensor's temperature will rise during long exposures (typically over 60-90 seconds), which increases noise in the final image. The ASI183MM is therefore best used for capturing many shorter exposures rather than single, very long ones. Using dark frame subtraction is essential to manage this thermal signal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy should I choose the ASI183MM mono over the ASI183MC color version?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eChoose the ASI183MM mono if your goal is maximum detail and sensitivity. It has a higher peak \u003cstrong\u003eQE of 84%\u003c\/strong\u003e and resolves finer detail because it lacks a color filter array. This makes it the superior choice for LRGB imaging from dark skies or for narrowband imaging of emission nebulae (like the Horsehead Nebula, B33) from light-polluted locations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the ZWO ASI183MM be used as a guide camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While its large \u003cstrong\u003e1\" sensor\u003c\/strong\u003e is overkill for many guide scopes, its high sensitivity and built-in \u003cstrong\u003eST-4 guide port\u003c\/strong\u003e make it a very capable autoguider. It can be particularly useful when guiding with an off-axis guider (OAG) on a longer focal length telescope, where the large sensor area makes it easier to find a suitable guide star.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do I need to connect the ASI183MM to my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe camera body has standard female \u003cstrong\u003eM42x0.75 \"T-threads\"\u003c\/strong\u003e. It typically ships with a 1.25\" nosepiece (not listed in the provided manifest) that allows it to slide into any standard 1.25\" focuser. You can also thread it directly to accessories like filter wheels or off-axis guiders that use the M42 standard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor\u003c\/td\u003e\n\u003ctd\u003e1\" Sony IMX183 BSI CMOS (Monochrome)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e5496 x 3672 (20.2 MP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePixel Size\u003c\/td\u003e\n\u003ctd\u003e2.4 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Dimensions\u003c\/td\u003e\n\u003ctd\u003e13.2 mm x 8.8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Diagonal\u003c\/td\u003e\n\u003ctd\u003e15.9 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Quantum Efficiency (QE)\u003c\/td\u003e\n\u003ctd\u003e84%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Well Capacity\u003c\/td\u003e\n\u003ctd\u003e15,000e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReadout Noise\u003c\/td\u003e\n\u003ctd\u003e1.6e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBit Depth\u003c\/td\u003e\n\u003ctd\u003e12-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Frame Rate\u003c\/td\u003e\n\u003ctd\u003e19 fps at 5496x3672\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShutter Type\u003c\/td\u003e\n\u003ctd\u003eElectronic Rolling Shutter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Exposure\u003c\/td\u003e\n\u003ctd\u003e32 µs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Exposure\u003c\/td\u003e\n\u003ctd\u003e2000 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e6.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Interface\u003c\/td\u003e\n\u003ctd\u003eUSB 3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuide Port\u003c\/td\u003e\n\u003ctd\u003eST-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003eM42x0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Window\u003c\/td\u003e\n\u003ctd\u003eAR Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling\u003c\/td\u003e\n\u003ctd\u003eUncooled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e62 mm x 36 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.26 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported OS\u003c\/td\u003e\n\u003ctd\u003eMac, Windows, Linux\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking Temperature\u003c\/td\u003e\n\u003ctd\u003e-5°C to 45°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C to 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking Relative Humidity\u003c\/td\u003e\n\u003ctd\u003e20% to 80%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO ASI183 CMOS Camera User Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967402701085,"sku":"ZWO-ASI183MM","price":989.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-ASI183MM-Mono-1__27735.1596910050.1280.1280.jpg?v=1684341776"},{"product_id":"zwo-asi183mm-pro-mono","title":"ZWO ASI183MM Pro Mono","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e20.2 Megapixel 1\" Sony BSI CMOS Sensor\u003c\/li\u003e\n\u003cli\u003e2.4µm Pixel Size for High-Resolution Imaging\u003c\/li\u003e\n\u003cli\u003eTwo-Stage TEC Cooling Reduces Thermal Noise\u003c\/li\u003e\n\u003cli\u003e84% Peak Quantum Efficiency\u003c\/li\u003e\n\u003cli\u003e1.6e Minimum Readout Noise\u003c\/li\u003e\n\u003cli\u003e256MB DDR3 Onboard Image Buffer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO ASI183MM Pro USB3.0 Cooled Monochrome Camera\u003c\/h2\u003e\n\u003cp\u003eThe ZWO ASI183MM Pro Mono combines a high-resolution 20.2 MP Sony IMX183 sensor with deep-cooling and a stable 256MB DDR3 buffer for serious deep-sky imaging. Its small 2.4µm pixels are engineered to resolve fine details in nebulae and galaxies when paired with short-focal-length refractors and imaging astrographs. A peak Quantum Efficiency of 84% and exceptionally low 1.6e read noise allow you to capture faint signal even in short exposures. The two-stage TEC cooler and internal buffer work together to deliver clean, low-noise frames at up to 19 fps at full resolution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e20.2 MP Resolution from a 1\" BSI Sensor\u003c\/h3\u003e\n\u003cp\u003eThe core of the ASI183MM Pro is its 5496 x 3672 pixel back-illuminated CMOS sensor. The 2.4µm pixel size creates an ideal pairing with wide-field refractors, allowing you to sample the sky at a high resolution without needing extreme focal lengths. The primary trade-off with such small pixels is their sensitivity to seeing conditions; they perform best under steady skies and demand precise focus to leverage their full resolving power.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSignal Capture at 84% Peak QE and 1.6e Read Noise\u003c\/h3\u003e\n\u003cp\u003eThis camera's back-illuminated sensor architecture achieves a peak Quantum Efficiency of 84%, capturing a high percentage of incoming photons. When combined with a minimum read noise of just 1.6 electrons, the camera maintains a high signal-to-noise ratio, critical for pulling faint details out of the sky background. The 15ke full well capacity provides enough dynamic range to capture bright star cores without saturation while still recording faint, surrounding nebulosity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eASI183MM Pro vs. ASI1600MM Pro: A Pixel-Level Comparison\u003c\/h3\u003e\n\u003cp\u003eWhen choosing a monochrome camera, the ASI183MM Pro is often compared to the venerable ASI1600MM Pro. The decision hinges on your telescope and imaging goals.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASI1600MM Pro Advantage:\u003c\/strong\u003e The ASI1600MM Pro uses larger 3.8µm pixels. This makes it more forgiving of average seeing conditions and a better match for longer focal length telescopes, where the 183's small pixels would be severely oversampled.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASI183MM Pro Advantage:\u003c\/strong\u003e With its 20.2 MP resolution and 2.4µm pixels, the ASI183MM Pro resolves significantly more detail at shorter focal lengths. Its 84% peak QE also represents a substantial sensitivity increase over the ASI1600's ~60% QE, allowing for deeper images in the same amount of time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eTEC Cooling and 256MB DDR3 Buffer\u003c\/h3\u003e\n\u003cp\u003eTwo-stage TEC cooling is essential for long-exposure astrophotography, as it dramatically reduces thermal noise that can build up on the sensor. The ASI183MM Pro's cooler can lower the sensor temperature to more than 35°C below ambient. To ensure error-free data transfer, especially at high frame rates over USB 3.0, the camera includes a 256MB DDR3 memory buffer. This buffer prevents dropped frames and minimizes amp glow, resulting in cleaner and more reliable raw data.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eConnectivity via USB 3.0 and M42 Threads\u003c\/h3\u003e\n\u003cp\u003eThe ASI183MM Pro connects to a computer via a high-speed USB 3.0 port, which provides the 5Gbps bandwidth necessary for its 19 fps full-resolution frame rate. The camera body features standard M42x0.75 female threads for connection to filter wheels and telescopes, with a native back focus of 6.5mm from the front plate. Power for the two-stage cooler requires an external 12V @ 3A DC power supply (sold separately).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ASI183MM Pro's 2.4µm pixel size affect telescope choice?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe small 2.4µm pixels are ideal for short focal length instruments (300mm - 700mm), where they provide excellent image resolution and detail. On long focal length telescopes like a large SCT, these pixels can lead to oversampling, where the image resolution is limited by atmospheric seeing rather than the optics. This results in bloated stars and no additional detail, making it a less-than-ideal match for telescopes over ~1200mm focal length under typical seeing conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ASI183MM Pro a good match for an 80mm f\/6 refractor imaging the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an excellent pairing. An 80mm f\/6 refractor has a focal length of 480mm, which, when paired with the ASI183MM Pro's 2.4µm pixels, yields an image scale of about 1.0 arcseconds per pixel. This is a great resolution for capturing fine dust lanes in the Andromeda Galaxy (M31). However, the 1\" sensor size means you will need to create a mosaic to capture the entire galaxy, as its apparent size in the sky is very large.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ASI183MM Pro for imaging Jupiter with an 8\" f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile primarily a deep-sky camera, the ASI183MM Pro can be used for planetary imaging thanks to its high frame rate capabilities in ROI mode. For an f\/10 SCT, you would be imaging at f\/10, which is slightly undersampled for the camera's 2.4µm pixels. For optimal planetary imaging, which requires a focal ratio between f\/12 and f\/17 for this camera, you would want to add a 1.5x Barlow lens to bring your SCT to f\/15, which would be an ideal match for capturing fine detail in Jupiter's cloud bands under good seeing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the 256MB DDR3 buffer in the ASI183MM Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e256MB DDR3 buffer\u003c\/strong\u003e acts as a temporary storage for image data before it is transferred to your computer. This prevents data loss from USB transmission errors, which can cause dropped frames. It also significantly reduces \"amp glow,\" an artifact common in some CMOS sensors during long exposures, by allowing for more stable data handling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need an external power supply for the ASI183MM Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While the camera itself can be powered by the USB 3.0 connection for basic operation, the \u003cstrong\u003etwo-stage TEC cooler requires an external 12V @ 3A power supply\u003c\/strong\u003e to function. Without this external power, you will not be able to cool the sensor for low-noise, long-exposure imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ASI183MM Pro still a good choice compared to newer ZWO cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ASI183MM Pro remains highly relevant for a specific application: high-resolution, wide-field imaging with short refractors. Newer sensors may offer higher QE or larger formats, but the 2.4µm pixels of the ASI183MM Pro provide a unique combination of resolution and sensitivity that is hard to match for imagers who want to extract the maximum detail from wide celestial targets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-ASI183MM-P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Series\u003c\/td\u003e\n\u003ctd\u003eZWO ASI183\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor\u003c\/td\u003e\n\u003ctd\u003e1\" Sony IMX183 BSI CMOS (13.2mm x 8.8mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e5496 x 3672 (20.2 MP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePixel Size\u003c\/td\u003e\n\u003ctd\u003e2.4 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\/Mono\u003c\/td\u003e\n\u003ctd\u003eMonochrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling\u003c\/td\u003e\n\u003ctd\u003eCooled, Two-Stage TEC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnti-Dew Heater\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Buffer\u003c\/td\u003e\n\u003ctd\u003e256MB DDR3 Memory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Quantum Efficiency (QE)\u003c\/td\u003e\n\u003ctd\u003e84%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBit Depth\u003c\/td\u003e\n\u003ctd\u003e12-Bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Well Capacity\u003c\/td\u003e\n\u003ctd\u003e15ke\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReadout Noise\u003c\/td\u003e\n\u003ctd\u003e1.6e - 3.0e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Frame Rate (12-bit)\u003c\/td\u003e\n\u003ctd\u003e19 fps @ 5496 x 3672\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShutter Type\u003c\/td\u003e\n\u003ctd\u003eElectronic Rolling Shutter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExposure Range\u003c\/td\u003e\n\u003ctd\u003e32 µs to 2000 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRegion of Interest (ROI)\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComputer Interface\u003c\/td\u003e\n\u003ctd\u003eUSB 3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Interface\u003c\/td\u003e\n\u003ctd\u003eM42x0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e6.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Window\u003c\/td\u003e\n\u003ctd\u003eAR Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption (Cooler)\u003c\/td\u003e\n\u003ctd\u003e12V @ 3A Max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption (Camera)\u003c\/td\u003e\n\u003ctd\u003e650mA @ 5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e78mm Diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.9 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-5°C to 45°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C to 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd\u003e20% to 80%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOS Compatibility\u003c\/td\u003e\n\u003ctd\u003eMac, Windows \u0026amp; Linux\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO ASI183 CMOS Camera User Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967405879581,"sku":"ZWO-ASI183MM-P","price":1409.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-ASI183MM-Pro-Mono-1__03857.1596910050.1280.1280.jpg?v=1684341552"},{"product_id":"zwo-asi294mc-color","title":"ZWO ASI294MC Color","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e11.7 Megapixel 4\/3\" Sony IMX294 Color CMOS Sensor\u003c\/li\u003e\n\u003cli\u003e4.63µm Pixels and 63,700e Full Well Capacity\u003c\/li\u003e\n\u003cli\u003e19 FPS at Full 4144 x 2822 Resolution\u003c\/li\u003e\n\u003cli\u003eUltra-Low 1.2e Read Noise\u003c\/li\u003e\n\u003cli\u003eUSB 3.0 and ST-4 Guiding Ports\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO ASI294MC USB 3.0 Color Astronomy Camera\u003c\/h2\u003e\n\u003cp\u003eThe ZWO ASI294MC combines the 11.7 MP Sony IMX294 sensor with high-speed USB 3.0 electronics, capturing full-resolution 4144 x 2822 frames at up to 19 FPS. Its 4.63µm pixels are ideal for sampling planetary detail on a wide range of telescopes, while the back-illuminated sensor's deep 63,700e full well and exceptionally low 1.2e read noise extract subtle color variations on Jupiter's cloud bands and Saturn's rings. This uncooled camera delivers its full 14-bit ADC data stream over a 5Gbps USB 3.0 interface, making it a dedicated tool for high-framerate solar system imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSony 4\/3\" BSI Sensor with 63,700e- Full Well\u003c\/h3\u003e\n\u003cp\u003eAt the core of the ASI294MC is a large 4\/3\" Sony CMOS sensor with a 21.63mm diagonal, providing a generous field of view for framing the entire lunar disc or large solar prominences. The back-illuminated (BSI) architecture maximizes sensitivity by placing the sensor's wiring layer behind the photodiodes. This design, combined with a massive 63,700e- full well capacity and 1.2e read noise, yields a high dynamic range essential for capturing bright planetary limbs and faint atmospheric details in the same exposure without clipping highlights.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e19 FPS Capture for High-Resolution Planetary Imaging\u003c\/h3\u003e\n\u003cp\u003eThe ASI294MC is engineered for lucky imaging, a technique that freezes moments of steady atmospheric seeing. It streams full 11.7 MP frames at 19 FPS over its USB 3.0 port, allowing you to capture thousands of frames in a short period. This high-speed capture is critical for imaging targets like Jupiter, which rotates quickly, and ensures you have enough data to stack only the sharpest frames for a final, detail-rich image.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB 3.0 Interface:\u003c\/strong\u003e A 5Gbps bandwidth ensures the camera can operate at its maximum frame rate of 19 FPS without dropping frames.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eST-4 Guide Port:\u003c\/strong\u003e While primarily an imaging camera, the onboard ST-4 port allows it to double as a high-sensitivity guide camera for a secondary imaging rig.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectronic Rolling Shutter:\u003c\/strong\u003e Captures data sequentially across the sensor, which is ideal for astronomical targets that do not have rapid, inconsistent motion.\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe Uncooled Advantage: Simplicity and Portability\u003c\/h3\u003e\n\u003cp\u003eAs an uncooled camera, the ASI294MC has a significant advantage in weight, power simplicity, and cost. Weighing only 0.25 lbs and requiring no external 12V power supply for cooling, it runs entirely off the USB 3.0 port. This makes it an ideal grab-and-go planetary camera that minimizes cable clutter and power management at the telescope, getting you imaging faster. The trade-off is higher thermal noise on exposures longer than a few seconds, which firmly establishes its role as a specialist for short-exposure planetary, lunar, and solar work rather than long-exposure deep-sky imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eASI294MC vs. the Cooled ASI294MC Pro\u003c\/h3\u003e\n\u003cp\u003eThe primary distinction between this camera and its sibling, the ASI294MC Pro, is thermoelectric cooling. The Pro version is built for long-exposure deep-sky astrophotography, while this uncooled model is optimized for high-speed planetary work.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASI294MC Pro Advantage:\u003c\/strong\u003e Regulated two-stage cooling dramatically reduces thermal noise, making it possible to take clean multi-minute exposures of faint nebulae and galaxies. It also includes a 256MB DDR3 buffer to prevent amp glow and ensure stable data transfer.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASI294MC (Uncooled) Advantage:\u003c\/strong\u003e Significantly lower cost and complexity. It is lighter (0.25 lbs), draws less power, and requires no separate 12V DC input, making it a more portable and straightforward solution for capturing planets, the Moon, and the Sun (with a proper solar filter).\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ZWO ASI294MC perform on Jupiter with an 8\" f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis is an excellent pairing. For planetary imaging, the optimal focal ratio is typically 5 to 7 times the camera's pixel size. With the ASI294MC's 4.63µm pixels, your target focal ratio is between f\/23 and f\/32. On an f\/10 SCT, you would use a \u003cstrong\u003e2.5x or 3x Barlow lens\u003c\/strong\u003e to achieve this magnification, which will give you a well-resolved image of Jupiter's cloud bands and Great Red Spot under good seeing conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ASI294MC for deep-sky objects like the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, but with a specific technique. As an \u003cstrong\u003euncooled camera\u003c\/strong\u003e, the ASI294MC is susceptible to thermal noise on long exposures. However, its high sensitivity and low read noise make it excellent for Electronically-Assisted Astronomy (EAA) or \"live stacking.\" By taking many short exposures (e.g., 5-15 seconds) and stacking them in real-time, you can view bright deep-sky objects like the Orion Nebula (M42) or the Hercules Cluster (M13) without needing active cooling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does an \"uncooled\" camera mean for my imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn uncooled camera like the ASI294MC does not have a thermoelectric cooling (TEC) system. This means the sensor's temperature will fluctuate with the ambient air temperature, generating thermal noise (a random electronic signal) during longer exposures. This makes it ideal for \u003cstrong\u003eshort-exposure \"lucky imaging\"\u003c\/strong\u003e of bright solar system objects where exposure times are fractions of a second, but less suitable for traditional long-exposure deep-sky astrophotography where exposures can last several minutes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat software do I need to use the ASI294MC?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO ASI294MC is compatible with a wide range of free and paid software on Windows, Mac, and Linux. For planetary imaging, popular choices include \u003cstrong\u003eFireCapture\u003c\/strong\u003e and \u003cstrong\u003eSharpCap\u003c\/strong\u003e for capturing video data. For post-processing and stacking the resulting video files, imagers commonly use \u003cstrong\u003eAutoStakkert!\u003c\/strong\u003e, \u003cstrong\u003eRegiStax\u003c\/strong\u003e, and WinJUPOS.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the ASI294MC require an external power supply?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The ZWO ASI294MC is powered entirely through the included \u003cstrong\u003eUSB 3.0 cable\u003c\/strong\u003e. It does not have a port for an external 12V power supply, which simplifies its setup and makes it more portable compared to cooled cameras that require a separate power source for the TEC cooler.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"Back-Illuminated Sensor (BSI)\" mean?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA Back-Illuminated Sensor (BSI) has its metal wiring layer moved behind the light-sensitive photodiode area. In traditional front-illuminated sensors, this wiring can obstruct some of the incoming light. By moving it out of the way, a BSI sensor achieves higher quantum efficiency (QE), meaning it converts a higher percentage of photons into a usable electronic signal. This results in cleaner, more sensitive images, especially in low-light conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor\u003c\/td\u003e\n\u003ctd\u003e4\/3\" Sony IMX294 Color CMOS (BSI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e4144 x 2822 (11.7 MP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePixel Size\u003c\/td\u003e\n\u003ctd\u003e4.63 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Dimensions\u003c\/td\u003e\n\u003ctd\u003e19.1 mm x 13.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Diagonal\u003c\/td\u003e\n\u003ctd\u003e21.63 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Frame Rate\u003c\/td\u003e\n\u003ctd\u003e19 FPS at 4144 x 2822\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Well Capacity\u003c\/td\u003e\n\u003ctd\u003e63,700e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRead Noise\u003c\/td\u003e\n\u003ctd\u003e1.2e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNative Bit Depth\u003c\/td\u003e\n\u003ctd\u003e14-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShutter Type\u003c\/td\u003e\n\u003ctd\u003eElectronic Rolling Shutter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExposure Range\u003c\/td\u003e\n\u003ctd\u003e32 µs to 2000 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eROI Support\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e17.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Series\u003c\/td\u003e\n\u003ctd\u003eZWO ASI294\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling\u003c\/td\u003e\n\u003ctd\u003eUncooled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuide Port\u003c\/td\u003e\n\u003ctd\u003eST-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComputer Interface\u003c\/td\u003e\n\u003ctd\u003eUSB 3.0 \/ USB 2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003e1.25\", 2\", M42x0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Window\u003c\/td\u003e\n\u003ctd\u003eAR Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-Camera Memory\u003c\/td\u003e\n\u003ctd\u003e192K byte user-accessible space\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking Temperature\u003c\/td\u003e\n\u003ctd\u003e-5°C to 45°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C to 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking Humidity\u003c\/td\u003e\n\u003ctd\u003e20% to 80%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e62 mm x 36 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.25 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOS Compatibility\u003c\/td\u003e\n\u003ctd\u003eMac, Windows, Linux\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO ASI294MC Camera Body\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Nosepiece\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2m USB 3.0 Cable\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2m ST-4 Autoguider Cable\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eT2 to 1.25\" Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e11 mm T2 Spacer\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2\" Dust Cap\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Dust Cap\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuick Guide\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967420657949,"sku":"ZWO-ASI294MC","price":989.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-ASI294MC-Color-1__82127.1596910052.1280.1280.jpg?v=1684341668"},{"product_id":"zwo-asi294mc-pro-color","title":"ZWO ASI294MC Pro Color","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e11.7 Megapixel 4\/3\" Sony IMX294 Color CMOS Sensor\u003c\/li\u003e\n\u003cli\u003e4.63µm Pixel Size\u003c\/li\u003e\n\u003cli\u003eMassive 63.7ke- Full Well Capacity\u003c\/li\u003e\n\u003cli\u003eExtremely Low 1.2e- Minimum Read Noise\u003c\/li\u003e\n\u003cli\u003eTwo-Stage TEC Cooling with Anti-Dew Heater\u003c\/li\u003e\n\u003cli\u003e256MB DDR3 Onboard Image Buffer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO ASI294MC Pro Color Cooled Astronomy Camera\u003c\/h2\u003e\n\u003cp\u003eThe ZWO ASI294MC Pro combines a high-resolution 11.7 MP Sony back-illuminated sensor with large 4.63µm pixels on a 4\/3\" format chip. Its massive 63.7ke- full well capacity and exceptionally low 1.2e- read noise capture extreme dynamic range in a single exposure, from faint nebulosity to bright stellar cores. The integrated 256MB DDR3 buffer ensures stable, drop-free data transfer over USB 3.0 at a full resolution frame rate of 16 fps with its 14-bit ADC.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSony 4\/3\" Sensor: 63.7ke- Full Well and 1.2e- Read Noise\u003c\/h3\u003e\n\u003cp\u003eThe heart of the ASI294MC Pro is its 23.2mm diagonal Sony IMX294 sensor, a proven performer for deep-sky imaging. The back-illuminated (BSI) architecture maximizes photon collection, while the large 4.63µm pixels are well-suited to a wide range of refractors and reflectors. Its greatest asset is the 63.7ke- full well depth, which allows you to take longer sub-exposures on targets with bright stars, like the Orion Nebula (M42) or the Hercules Cluster (M13), without saturating the stars and losing color information.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eTwo-Stage Cooling and 256MB DDR3 Buffer\u003c\/h3\u003e\n\u003cp\u003eDeep-sky astrophotography requires long exposures, where thermal noise from the sensor can degrade image quality. The ASI294MC Pro's two-stage TEC cooling system dramatically lowers sensor temperature, resulting in clean, low-noise images. A built-in anti-dew heater on the protective window prevents moisture from forming during humid nights. For data stability, the 256MB DDR3 memory buffer acts as a high-speed cache, preventing dropped frames that can occur with slower computers or heavy USB traffic, a critical feature when capturing hundreds of exposures for a final image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eASI294MC Pro vs. ASI533MC Pro: 4\/3\" vs. 1\" Sensor\u003c\/h3\u003e\n\u003cp\u003eWhile the ASI533MC Pro offers the benefit of zero amp glow, the ASI294MC Pro provides a significantly larger imaging canvas. The choice depends on your primary targets and telescope.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor Format:\u003c\/strong\u003e The ASI294MC Pro uses a 4\/3\" rectangular sensor (4144 x 2822 pixels), giving you a wider field of view for framing large targets like the Andromeda Galaxy (M31). The ASI533MC Pro uses a smaller, 1-inch square sensor, which simplifies mosaic planning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResolution and Pixel Size:\u003c\/strong\u003e At 11.7 MP and 4.63µm pixels, the ASI294MC Pro samples the sky differently than the 9 MP, 3.76µm-pixel ASI533MC Pro. The larger pixels of the 294MC are often a better match for longer focal length telescopes, preventing oversampling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Well Depth:\u003c\/strong\u003e The ASI294MC Pro's deep 63.7ke- well is a distinct advantage over the ASI533MC Pro's ~50ke- capacity, allowing for greater dynamic range in star fields.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eM42 Threads, 6.5mm Back Focus, and USB Hub\u003c\/h3\u003e\n\u003cp\u003eThe camera body features a standard female M42x0.75 thread for direct connection to your telescope's focuser or accessories. With a native back focus of only 6.5mm, you can easily integrate filter wheels, filter drawers, and off-axis guiders into your imaging train. The included T2-M48 16.5mm and 21mm extenders help you achieve the standard 55mm back focus distance out of the box. A built-in USB 3.0 port provides high-speed image download, while two additional USB 2.0 ports act as a powered hub, letting you connect your guide camera and electronic focuser directly to the ASI294MC Pro to simplify cable management.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of the ZWO ASI294MC Pro's 4\/3\" sensor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is its large, rectangular field of view. With a 23.2mm diagonal, the 4\/3\" sensor is ideal for capturing expansive deep-sky objects like the North American Nebula (NGC 7000) or the Veil Nebula complex without needing to create a mosaic. This format is a significant step up from smaller 1-inch or 1\/1.8-inch class sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ASI294MC Pro perform on the Andromeda Galaxy (M31) with an 80mm refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn 80mm refractor with a focal length between 400mm and 600mm is an excellent match for the ASI294MC Pro. This combination provides a wide enough field of view to frame the entirety of the Andromeda Galaxy (M31), including its faint outer arms and satellite galaxies M32 and M110, in a single shot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the ZWO ASI294MC Pro suffer from amp glow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, like many CMOS sensors of its generation, the ASI294MC Pro can exhibit some amp glow on very long exposures. However, this is a predictable pattern that is easily and completely removed during post-processing by subtracting properly matched dark frames, a standard part of any deep-sky imaging workflow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ASI294MC Pro's 4.63µm pixel size a good match for an 8\" f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAt the native f\/10 focal ratio of a typical 8\" SCT (~2000mm focal length), the 4.63µm pixels would result in significant oversampling. To achieve a better image scale, you should use a focal reducer (typically 0.7x or 0.63x) with the SCT. This brings the focal ratio down to f\/7 or f\/6.3, making it a much better pairing for the ASI294MC Pro's pixel size and providing a wider field of view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat power supply do I need for the ASI294MC Pro's cooler?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe two-stage TEC cooler requires an external power source. The camera's power input is rated for \u003cstrong\u003e12V @ 3A Max\u003c\/strong\u003e. A stable, regulated 12V DC power supply with at least 3A, and preferably 5A, is recommended. The camera electronics themselves are powered via the USB 3.0 connection (650mA at 5V).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy would I choose the ASI294MC Pro over the monochrome ASI294MM Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ASI294MC Pro (Color) is for simplicity and efficiency. You can capture a full-color image in a single set of exposures, making it ideal for those with limited imaging time or who prefer a simpler workflow. The ASI294MM Pro (Monochrome) offers higher ultimate resolution and sensitivity, especially for narrowband imaging, but requires a filter wheel and at least three times the imaging time (for LRGB) to produce a color image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-ASI294MC-P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Series\u003c\/td\u003e\n\u003ctd\u003eZWO ASI294\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor\u003c\/td\u003e\n\u003ctd\u003eSony IMX294 4\/3\" Back-Illuminated Color CMOS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e4144 x 2822 (11.7 MP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePixel Size\u003c\/td\u003e\n\u003ctd\u003e4.63 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Dimensions\u003c\/td\u003e\n\u003ctd\u003e19.1mm x 13.0mm (23.2mm diagonal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling\u003c\/td\u003e\n\u003ctd\u003eCooled, Two-Stage TEC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnti-Dew Heater\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Buffer\u003c\/td\u003e\n\u003ctd\u003e256MB DDR3 Memory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBit Depth\u003c\/td\u003e\n\u003ctd\u003e14-Bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Frame Rate\u003c\/td\u003e\n\u003ctd\u003e16 fps at 4144x2822 (14-bit) \/ 19 fps at 4144x2822 (10-bit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Well Capacity\u003c\/td\u003e\n\u003ctd\u003e63.7ke-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRead Noise\u003c\/td\u003e\n\u003ctd\u003e1.2e- to 7.3e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShutter Type\u003c\/td\u003e\n\u003ctd\u003eElectronic Rolling Shutter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExposure Range\u003c\/td\u003e\n\u003ctd\u003e32 µs to 2000 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eROI Support\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e6.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Interface\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComputer Interface\u003c\/td\u003e\n\u003ctd\u003eUSB 3.0 \/ USB 2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirements\u003c\/td\u003e\n\u003ctd\u003eCamera: 650mA @ 5V (via USB) \/ Cooler: 12V @ 3A Max (external)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.925 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-5°C to 45°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C to 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd\u003e20% to 80%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOS Compatibility\u003c\/td\u003e\n\u003ctd\u003eMac, Windows, Linux\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eASI294MC Pro Cooled Color Camera\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCamera Bag\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUSB 3.0 Cable\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUSB 2.0 Cables\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Nosepiece\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Cover\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eT2-1.25\" Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eT2-M48 16.5mm Extender\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e21mm Extender\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM42-M48 Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSpacers\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 4\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuick Guide\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967421215005,"sku":"ZWO-ASI294MC-P","price":1409.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-ASI294MC-Pro-Color-1__51455.1596910052.1280.1280.jpg?v=1684341782"},{"product_id":"zwo-asi385mc-color","title":"ZWO ASI385MC Color - Discontinued","description":"\u003c!-- more --\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_ASI385MC_Color_ASI385MC_1_description.jpeg?v=1684341668\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_ASI385MC_Color_ASI385MC_1_description.jpeg?v=1684341670\" alt=\"385MC\" width=\"300\" height=\"300\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_ASI385MC_Color_ASI385MC_2_description.jpeg?v=1684341671\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_ASI385MC_Color_ASI385MC_2_description.jpeg?v=1684341671\" alt=\"Logo-of-385（最新）2-e1510124117631\" width=\"750\" height=\"263\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003ch2\u003e\u003cspan\u003eCamera Sensor\u003c\/span\u003e\u003c\/h2\u003e\u003cdiv id=\"tmpl_contentMenu_bar\"\u003e\u003cdiv id=\"sidGlobalnav\"\u003e\u003cdiv id=\"tmpl_contentMenu_bar_base\"\u003e\u003cdiv id=\"nav2nd\"\u003e\u003ch3\u003e\u003cspan\u003e▶IMX385LQR\u003c\/span\u003e\u003c\/h3\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv id=\"tmpl_main\"\u003e\u003cdiv id=\"sidContents\"\u003e\u003cdiv\u003e\n\u003cp\u003eDiagonal 8.35 mm (Type 1\/2) Approx. 2.13M-Effective Pixel Color CMOS Image Sensor.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_ASI385MC_Color_ASI385MC_3_description.jpeg?v=1684341673\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_ASI385MC_Color_ASI385MC_3_description.jpeg?v=1684341675\" alt=\"i_imx385\" width=\"200\" height=\"100\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cspan\u003e▶\u003c\/span\u003eCMOS Image Sensor for Industrial Applications that Realizes High Sensitivity Approximately Twice That of the Existing Product\u003c\/h3\u003e\n\u003cp\u003eSony Semiconductor Solutions Corporation has developed the CMOS image sensor “IMX385LQR” for industrial applications. This new image sensor realizes high sensitivity approximately twice that of the existing product (IMX185LQJ)*\u003csup\u003e1\u003c\/sup\u003e.\u003cbr\u003eThe IMX385LQR pursues picture quality at low illuminance most needed by cameras for industrial applications and mounts pixels with a sensitivity of 2350 mV, which is the highest sensitivity among Sony image sensors for industrial applications*\u003csup\u003e2\u003c\/sup\u003e. In addition, SNR1s of 0.13 lx*\u003csup\u003e3\u003c\/sup\u003e, which is the highest performance among Sony Full HD-compatible image sensors for industrial applications, is achieved by mounting an internal programmable gain amplifier and high conversion gain pixels. Superior performance as an image sensor for industrial applications is further achieved by combining HDR (High Dynamic Range) technology with technology that improves sensitivity in the near-infrared light region.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003ch2\u003eAstrophotography Performance\u003c\/h2\u003e\u003cp style=\"text-align: justify;\"\u003eASI385MC offers very good performance for astrophotography. Low read noise, high dynamic range, QE peak \u0026gt;80%, AR protective window and much more.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp style=\"text-align: justify;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_ASI385MC_Color_ASI385MC_4_description.jpeg?v=1684341677\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_ASI385MC_Color_ASI385MC_4_description.jpeg?v=1684341678\" alt=\"\" width=\"1000\" height=\"1354\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003ch2\u003eUSB 3.0 Port \u0026amp; ST4 Port\u003c\/h2\u003e\u003cp style=\"text-align: justify;\"\u003e\u003cstrong\u003eUSB 3.0 Port: \u003c\/strong\u003ecan provide 5Gb bandwidth to let ASI385 run at 67 fps (12bit, normal mode) or 120 fps (10bit, high speed mode) at full resolution(2.13Mega).\u003c\/p\u003e\u003cp style=\"text-align: justify;\"\u003e\u003cstrong\u003eST4 Port: \u003c\/strong\u003ecan be used connect with auto guide port of mount, for guiding.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_ASI385MC_Color_ASI385MC_5_description.jpeg?v=1684341680\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_ASI385MC_Color_ASI385MC_5_description.jpeg?v=1684341680\" alt=\"385MC3\" width=\"400\" height=\"400\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003ch2\u003eMechanical Diagram\u003c\/h2\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_ASI385MC_Color_ASI385MC_6_description.jpeg?v=1684341550\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_ASI385MC_Color_ASI385MC_6_description.jpeg?v=1684341551\" alt=\"\" width=\"689\" height=\"491\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003ch2\u003eWhat is in the box?\u003c\/h2\u003e\u003cp\u003eASI385MC box includes all necessary cables, adapters, and manuals.\u003c\/p\u003e\u003cp style=\"text-align: justify;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_ASI385MC_Color_ASI385MC_7_description.jpeg?v=1684341229\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_ASI385MC_Color_ASI385MC_7_description.jpeg?v=1684341230\" alt=\"224-290-178-185-385非冷冻包装清单\" width=\"750\" height=\"396\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003ch2\u003eDrivers and Softwares:\u003c\/h2\u003e\u003cp\u003eOur website has newest camera drivers and many DSO and Planetary capture softwares. Please make sure the newest driver and software has been installed before you start shooting:\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/astronomy-imaging-camera.com\/software\/\" target=\"_blank\" rel=\"noopener\"\u003ehttps:\/\/astronomy-imaging-camera.com\/software\/\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cdiv data-custom-tab\u003e\n\u003cp data-custom-tab-title\u003eSpecifications\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003eSensor: 1\/2″ CMOS IMX385\u003cbr\u003eDiagonal: 8.35mm\u003cbr\u003eResolution: 2.12Mega Pixels 1936×1096\u003cbr\u003ePixel Size: 3.75µm\u003cbr\u003eExposure Range: 32µs-2000s\u003cbr\u003eROI: Supported\u003cbr\u003eNon-volatile memory\/On camera storage: Build-in total 192K byte user-accessible space(image size up to 480X320)\u003cbr\u003eInterface: USB3.0\/USB2.0\u003cbr\u003eST4 Guider Port: Yes\u003cbr\u003eFocus Distance to Sensor: 12.5mm\u003cbr\u003eShutter Type: Rolling Shutter\u003cbr\u003eProtect window: AR coated window\u003cbr\u003eOperating System Compatibility: Mac, Windows, Linux\u003cbr\u003eInterface: USB3.0\/USB2.0\u003cbr\u003eBit rate: 12bit output(12bit ADC)\u003cbr\u003eAdaptor: 2″ \/ 1.25″ \/ M42X0.75\u003cbr\u003eDimension: φ62mm X 36mm\u003cbr\u003eWeight: 120g or 4.2 ounces (without lens)\u003cbr\u003eWorking Temperature: -5°C—45°C\u003cbr\u003eStorage Temperature: -20°C—60°C\u003cbr\u003eWorking Relative Humidity: 20%—80%\u003cbr\u003eStorage Relative Humidity: 20%—95%\u003c\/p\u003e\n\u003cp\u003eMax FPS at full resolution:\u003cbr\u003e10Bit ADC\u003cbr\u003e1936×1096 120fps\u003cbr\u003e12bit ADC\u003cbr\u003e1936×1096 67fps\u003c\/p\u003e\n\u003cp\u003eMore resolutions can be user defined\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967423967517,"sku":"ZWO-ASI385MC","price":416.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-ASI385MC-Color-1__83444.1596910052.1280.1280.jpg?v=1684341690"},{"product_id":"zwo-asi533mc-pro-color","title":"ZWO ASI533MC Pro Color","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e9.05 Megapixel 1\" Square Sony IMX533 Sensor\u003c\/li\u003e\n\u003cli\u003e3.76µm Pixels \u0026amp; 50,000e- Full Well Depth\u003c\/li\u003e\n\u003cli\u003eTwo-Stage TEC Cooling System\u003c\/li\u003e\n\u003cli\u003eZero Amplifier Glow Circuitry\u003c\/li\u003e\n\u003cli\u003e256MB DDR3 Onboard Image Buffer\u003c\/li\u003e\n\u003cli\u003e14-bit ADC with 1.0e Minimum Read Noise\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO ASI533MC Pro USB3 Cooled Color Camera\u003c\/h2\u003e\n\u003cp\u003eThe ZWO ASI533MC Pro Color camera combines a unique 9.05 MP square sensor with 3.76µm pixels for simplified framing and deep-sky imaging. Its back-illuminated Sony sensor achieves a peak quantum efficiency of ~80%, capturing faint signal with read noise as low as 1.0e. The camera's 14-bit ADC and 50,000e- full well capacity preserve dynamic range in bright star fields, while the 256MB DDR3 buffer ensures stable data transfer at up to 20 FPS over its USB 3.0 interface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe 1\" Square Sensor: 3008 x 3008 Pixel Array\u003c\/h3\u003e\n\u003cp\u003eThe ASI533MC Pro is built around a Sony IMX533 sensor with an 11.31mm x 11.31mm square format. This design eliminates the need to consider camera rotation for optimal framing, simplifying mosaic planning and ensuring consistent composition on targets like the Rosette Nebula (NGC 2237). The 3.76µm pixel size is well-matched to short-to-medium focal length refractors, resolving fine detail without requiring perfect seeing conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eClean Data: 50ke- Full Well \u0026amp; Zero Amp Glow\u003c\/h3\u003e\n\u003cp\u003eThis camera is engineered to produce data that is easy to calibrate. A deep 50,000 electron full well prevents bright stars from saturating, preserving their color and detail in dense clusters or galactic cores. Critically, the ASI533MC Pro incorporates circuitry that completely eliminates amplifier glow, a common source of noise in long exposures, regardless of exposure time or gain setting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eEfficient Signal Capture: ~80% QE and TEC Cooling\u003c\/h3\u003e\n\u003cp\u003eWith a back-illuminated (BSI) sensor design and a peak quantum efficiency of ~80%, the ASI533MC Pro captures a high percentage of incoming photons. This sensitivity reduces required exposure times for faint nebulae. The two-stage TEC cooler actively reduces thermal noise by lowering the sensor temperature, which is essential for clean, multi-minute exposures of faint deep-sky objects.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack-Illuminated Sensor:\u003c\/strong\u003e Increases sensitivity by placing the sensor wiring behind the photodiode layer, maximizing the light-gathering area of each pixel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegulated Cooling:\u003c\/strong\u003e The TEC cooler maintains a stable sensor temperature throughout an imaging session, which is critical for creating an accurate dark frame library for calibration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eZWO ASI533MC Pro vs. ASI294MC Pro\u003c\/h3\u003e\n\u003cp\u003eWhen choosing a color ZWO camera, the ASI294MC Pro is a frequent point of comparison. While both are highly capable, they serve different imaging goals.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASI294MC Pro Advantage:\u003c\/strong\u003e The ASI294MC Pro uses a larger Four Thirds sensor, offering a wider field of view at the same focal length. It also has a higher native resolution of 11.7MP.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASI533MC Pro Advantage:\u003c\/strong\u003e The ASI533MC Pro's defining features are its square sensor for easy framing and its complete lack of amplifier glow, which simplifies processing. It also has a slightly lower minimum read noise (1.0e vs. 1.2e).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eReliable Connectivity and 256MB Buffer\u003c\/h3\u003e\n\u003cp\u003eThe ASI533MC Pro uses a USB 3.0 interface for high-speed data transfer, capable of delivering its full 9.05 MP resolution at 20 frames per second without compromise. An onboard 256MB DDR3 memory buffer prevents dropped frames during data transfer, ensuring that every sub-exposure from a long imaging sequence is saved reliably. This is particularly important for high-frame-rate techniques or when using less powerful acquisition computers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the ZWO ASI533MC Pro's square sensor useful for astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e3008 x 3008 pixel\u003c\/strong\u003e square sensor simplifies image composition. You never have to rotate the camera to find the best orientation for a target, which is especially useful for building mosaics of large objects like the Andromeda Galaxy (M31). It provides a consistent field of view regardless of orientation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ASI533MC Pro's 50,000e- full well capacity affect my images of star clusters like the Pleiades (M45)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA large \u003cstrong\u003e50ke- full well\u003c\/strong\u003e prevents the bright stars in a cluster like the Pleiades (M45) from becoming saturated (pure white) during long exposures. This preserves the natural color of the stars and allows you to capture the faint surrounding nebulosity in the same sub-exposure without blowing out the highlights.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ZWO ASI533MC Pro suitable for imaging planets like Jupiter with an 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile primarily a deep-sky camera, the ASI533MC Pro is capable of planetary imaging. Its \u003cstrong\u003e3.76µm pixel size\u003c\/strong\u003e is a good match for longer focal length scopes like an 8\" SCT, especially with a Barlow lens. You can use its Region of Interest (ROI) feature to increase the frame rate significantly beyond the full-frame \u003cstrong\u003e20 FPS\u003c\/strong\u003e, allowing you to capture thousands of frames quickly to \"freeze\" atmospheric seeing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does 'zero amp glow' mean for the ASI533MC Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAmp glow is a faint illumination, usually in the corners of an image, caused by heat from the sensor's electronics. The \u003cstrong\u003eZWO ASI533MC Pro\u003c\/strong\u003e has internal hardware that completely eliminates this effect. This means your dark frames will be cleaner and more effective at removing noise, without the need to subtract a complex, glowing pattern that can change with exposure time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need an external power supply for the ZWO ASI533MC Pro's cooling system?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The camera's imaging sensor can be powered over USB, but the \u003cstrong\u003eTwo-Stage TEC cooling system\u003c\/strong\u003e requires a separate 12V 3A-5A DC power supply (not included). Without external power, the cooler will not function, and you will not be able to reduce thermal noise for long-exposure imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I achieve the standard 55mm back focus with the included adapters for the ASI533MC Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ASI533MC Pro has a native back focus of \u003cstrong\u003e17.5mm\u003c\/strong\u003e. ZWO includes a combination of extenders and adapters to reach the common 55mm standard. A typical configuration would be: Camera (17.5mm) + 16.5mm Extender + 21mm Extender. This totals 55mm. Refer to the diagrams provided by ZWO for specific configurations with accessories like filter wheels or off-axis guiders.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-ASI533MC-P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPN\u003c\/td\u003e\n\u003ctd\u003eZWO ASI533MC-P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Series\u003c\/td\u003e\n\u003ctd\u003eZWO ASI533 Pro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor\u003c\/td\u003e\n\u003ctd\u003e1\" Sony IMX533 BSI CMOS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e3008 x 3008 (9.05 MP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePixel Size\u003c\/td\u003e\n\u003ctd\u003e3.76 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Dimensions\u003c\/td\u003e\n\u003ctd\u003e11.31 mm x 11.31 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Diagonal\u003c\/td\u003e\n\u003ctd\u003e15.97 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantum Efficiency (Peak)\u003c\/td\u003e\n\u003ctd\u003e~80%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Well Capacity\u003c\/td\u003e\n\u003ctd\u003e50,000 e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRead Noise\u003c\/td\u003e\n\u003ctd\u003e1.0e to 3.8e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling\u003c\/td\u003e\n\u003ctd\u003eCooled, Two-Stage TEC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmp Glow Control\u003c\/td\u003e\n\u003ctd\u003eZero Amplifier Glow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBit Depth\u003c\/td\u003e\n\u003ctd\u003e14-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Frame Rate\u003c\/td\u003e\n\u003ctd\u003e20 FPS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Buffer\u003c\/td\u003e\n\u003ctd\u003e256MB DDR3 Memory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShutter Type\u003c\/td\u003e\n\u003ctd\u003eElectronic Rolling Shutter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExposure Range\u003c\/td\u003e\n\u003ctd\u003e32 µs to 2000 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e17.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Interface\u003c\/td\u003e\n\u003ctd\u003eM42x0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComputer Interface\u003c\/td\u003e\n\u003ctd\u003eUSB 3.0 \/ USB 2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement (Camera)\u003c\/td\u003e\n\u003ctd\u003e650mA @ 5V (via USB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Dimensions\u003c\/td\u003e\n\u003ctd\u003e78 mm Diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Weight\u003c\/td\u003e\n\u003ctd\u003e1.03 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-5°C to 45°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C to 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd\u003e20% to 80%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eASI533MC Pro Camera Body\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSoft Padded Camera Bag\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUSB 3.0 Cable (6.5 ft)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUSB 2.0 Cable (1.6 ft)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eT2 Extender (21mm)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eT2-M48 Extender (16.5mm)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM42-M48 Adapter Ring\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eT2-1.25\" Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Nosepiece\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSpacer Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 4\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eLens Cover\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuick Start Guide\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section-center\"\u003e\n        \u003cp\u003e\u003cstrong\u003ePlease Note:\u003c\/strong\u003e A 12V 3A-5A power adapter is required to run the camera's cooling system but is not included in the box. Please see the Recommended Accessories section to add one to your order.\u003c\/p\u003e\n    \u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967425540381,"sku":"ZWO-ASI533MC-P","price":1129.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-ASI533MC-Pro-Color-1__73286.1596910052.1280.1280.jpg?v=1684341784"},{"product_id":"zwo-cs-lens-2-8mm-12mm-f1-4","title":"ZWO CS Lens 2.8mm-12mm F1.4","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e2.8mm to 12mm Zoom Focal Length\u003c\/li\u003e\n\u003cli\u003eFast f\/1.4 Aperture\u003c\/li\u003e\n\u003cli\u003e~100° Wide Field of View\u003c\/li\u003e\n\u003cli\u003eDesigned for 1\/3\" Format Sensors\u003c\/li\u003e\n\u003cli\u003eStandard CS-Mount Thread\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO 2.8mm - 12mm f\/1.4 CS Lens\u003c\/h2\u003e\n\u003cp\u003eThe ZWO 2.8mm - 12mm f\/1.4 CS Lens transforms your small-format planetary camera into a dedicated all-sky instrument. Its variable 2.8mm to 12mm focal length provides a field of view up to approximately 100 degrees, while the fast f\/1.4 aperture gathers enough light for capturing transient events like meteors. This lens is specifically engineered for cameras with 1\/3\" sensors, such as the ZWO ASI120 series.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e2.8mm to 12mm Zoom for Framing the Sky\u003c\/h3\u003e\n\u003cp\u003eThe key to this lens is its flexible 2.8mm to 12mm zoom range. At 2.8mm, you can capture an immense swath of the sky, perfect for monitoring meteor showers or imaging the entire Milky Way band. Zooming in towards 12mm allows you to frame specific large constellations or regions of interest without swapping equipment, giving you compositional control directly at the lens.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe f\/1.4 Advantage for Faint, Fast Events\u003c\/h3\u003e\n\u003cp\u003eAn f\/1.4 focal ratio is exceptionally fast, maximizing light collection in short exposures. This is critical for capturing the fleeting streaks of meteors, which last only a fraction of a second. The wide aperture allows you to use higher frame rates and lower gain on your camera, resulting in cleaner, less noisy video captures of atmospheric phenomena or auroral displays.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCS-Mount Integration for 1\/3\" Sensors\u003c\/h3\u003e\n\u003cp\u003eThis lens uses the standard CS-mount, designed to match the small chip size of 1\/3\" format guide and planetary cameras. This ensures the entire sensor is illuminated without vignetting and that the resolution is matched to the camera's capabilities. Note that to connect this lens to a standard ZWO camera with T2 threads, you will need a separate T2-CS adapter.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Compatibility:\u003c\/strong\u003e Optimally pairs with cameras like the ZWO ASI120MC\/MM.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdapter Required:\u003c\/strong\u003e A T2-CS or M42-CS adapter is necessary for connecting to most ZWO cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse Case Limitation:\u003c\/strong\u003e The small image circle is not intended for larger format deep-sky cameras, which would show severe vignetting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat cameras work best with the ZWO 2.8-12mm CS Lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis lens is designed for cameras with a \u003cstrong\u003e1\/3\" sensor format\u003c\/strong\u003e. The classic pairing is with the ZWO ASI120 series cameras. Using it with a camera that has a larger sensor will result in a small image circle in the center of the frame and heavy vignetting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need an adapter to attach this ZWO lens to my camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Most ZWO cameras feature a female T2 (M42x0.75) thread on the front. To attach this CS-mount lens, you will need a \u003cstrong\u003eT2-CS adapter\u003c\/strong\u003e, which is sold separately. This adapter provides the correct threading and spacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow can I use the ZWO 2.8-12mm lens to capture the Perseid meteor shower?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor the Perseids, set the lens to its widest focal length (\u003cstrong\u003e2.8mm\u003c\/strong\u003e) to maximize the sky coverage. Point your camera towards a dark part of the sky about 45 degrees away from the radiant in Perseus. The fast \u003cstrong\u003ef\/1.4 aperture\u003c\/strong\u003e will allow you to capture even faint meteors using short video exposures in a program like SharpCap or FireCapture.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ZWO 2.8-12mm lens good for imaging planets or galaxies?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this lens is not suitable for planetary or deep-sky imaging. Its extremely short focal length (\u003cstrong\u003e2.8mm-12mm\u003c\/strong\u003e) is designed for ultra-wide-angle views of the sky. For planets, you need the long focal length of a telescope, and for most galaxies, you need a much longer focal length instrument to resolve any detail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the \"fisheye\" effect mean for this ZWO lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAt its widest 2.8mm setting, the lens will exhibit significant barrel distortion, often called a \"fisheye\" effect. This means straight lines (like building edges) will appear curved, and constellations near the edge of the frame will look stretched. This is a normal optical characteristic of very wide-angle lenses and is necessary to achieve the ~100-degree field of view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use filters with the ZWO 2.8-12mm CS lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis lens does not have a standard front filter thread like a DSLR lens. It is designed for unfiltered, wide-field imaging of the night sky, such as for meteor showers or capturing the Milky Way in true color with a one-shot-color camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-LENS-2.8-12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e2.8mm - 12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003ef\/1.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount\u003c\/td\u003e\n\u003ctd\u003eCS-Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Sensor Format\u003c\/td\u003e\n\u003ctd\u003e1\/3\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField of View (approx.)\u003c\/td\u003e\n\u003ctd\u003e~100°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2.8mm - 12mm f\/1.4 CS Lens\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967433240861,"sku":"ZWO-LENS-2.8-12","price":53.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-CS-Lens-2-8mm-12mm-F1-4-1__29815.1596910053.1280.1280.jpg?v=1684341838"},{"product_id":"zwo-desiccant-tablets","title":"ZWO Desiccant Tablets","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eMaintains a dew-free sensor chamber\u003c\/li\u003e\n\u003cli\u003eFactory-original replacement for all ZWO cooled cameras\u003c\/li\u003e\n\u003cli\u003eIncludes four desiccant tablets\u003c\/li\u003e\n\u003cli\u003eUser-replaceable to restore camera performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO Desiccant Tablets for ASI Cooled Cameras\u003c\/h2\u003e\n\u003cp\u003eThis ZWO Desiccant Tablet replacement pack includes four tablets, designed as the factory-original solution to eliminate internal moisture in any ZWO ASI cooled camera. Backed by a 2-Year ZWO warranty, these tablets are the specific component required to keep your sensor chamber free of dew or frost. The linked 4.13 MB overview document shows the exact placement and replacement procedure for these essential maintenance items.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eRestore Dew-Free Performance in 4 Steps\u003c\/h3\u003e\n\u003cp\u003eInternal dew or frost formation on your sensor's optical window is the primary sign that the original desiccant tablets are saturated. Replacing the four tablets inside the sensor chamber restores your camera's ability to combat moisture, eliminating the \"frost rings\" or hazy gradients that can ruin a sub-exposure. This is a routine maintenance task, not a defect, and is critical for consistent imaging, especially in high-humidity environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eGuaranteed Fit for All ASI Cooled Cameras\u003c\/h3\u003e\n\u003cp\u003eThese are the official ZWO replacement tablets, ensuring 100% compatibility and fit for every cooled ASI camera model. Using factory-specified desiccants means you don't have to worry about incorrect sizing, outgassing, or chemical composition that could harm sensitive sensor coatings. From the original ASI1600MM Cool to the latest full-frame models, this single pack contains the correct tablets for the job.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Specification:\u003c\/strong\u003e Ensures the tablets have the correct porosity and moisture absorption capacity for the sealed chamber volume of ASI cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrevents Contamination:\u003c\/strong\u003e Avoids the risks associated with third-party desiccants that may not be rated for use near delicate optical surfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Installation:\u003c\/strong\u003e The replacement process is straightforward and can be completed in minutes with basic tools, as detailed in ZWO's documentation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eZWO OEM Tablets vs. Generic Alternatives\u003c\/h3\u003e\n\u003cp\u003eWhile other desiccants exist, only the official ZWO tablets are guaranteed to fit the specific recessed slots within the ASI camera's sensor chamber. The primary limitation of any desiccant is its finite lifespan; it is a consumable item that must be replaced periodically to maintain a dry environment.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneric Desiccants:\u003c\/strong\u003e May be improperly sized, leading to a poor seal or loose particles inside the optical train. Their absorption properties are not matched to ZWO's design, potentially leading to faster saturation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZWO Desiccant Tablets:\u003c\/strong\u003e Provide a confirmed fit and the specified moisture-absorbing lifespan intended for the camera's sealed environment. This is the only way to restore the camera to its original factory-dry condition.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know if my ZWO ASI cooled camera needs new desiccant tablets?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe most common sign is the appearance of dew, frost, or a hazy pattern on your images, especially on flat frames, after the sensor has reached its cooling setpoint. This indicates moisture is condensing on the inside of the sensor's optical window, and the original desiccant tablets are saturated and can no longer absorb moisture.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAre these ZWO desiccant tablets compatible with my ASI294MC Pro camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. These desiccant tablets are the official ZWO replacements and are designed to fit \u003cstrong\u003eall models of ZWO ASI cooled cameras\u003c\/strong\u003e, including the ASI294MC Pro, ASI1600MM Pro, ASI2600MC Pro, ASI6200MM Pro, and all others in the series.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow many tablets are included in one pack of ZWO-DESICC?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eEach ZWO-DESICC package contains \u003cstrong\u003efour (4) individual desiccant tablets\u003c\/strong\u003e. This is the exact number required to fully replace the existing tablets inside the sensor chamber of one ASI cooled camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMy ASI2600MC Pro is showing frost spots on my flat frames. Will these ZWO desiccant tablets fix it?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, almost certainly. Frost spots appearing on flat frames are the classic symptom of saturated desiccants. Replacing the old tablets with this new set will absorb the trapped moisture in the sensor chamber, directly solving the cause of the internal frost formation and restoring clean, artifact-free images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow often should I replace the desiccant tablets in my ASI cooled camera when imaging from a humid location?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIn humid environments (e.g., over 70% relative humidity), you may need to replace the tablets every 6-12 months. In drier, arid climates, they can last for several years. The best indicator is not a fixed schedule but the visual appearance of frost or dew on your sensor; once you see it, it's time for a replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs it difficult to replace the ZWO desiccant tablets myself?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the process is designed to be user-serviceable. It involves removing a few screws on the camera body to open the sensor chamber, carefully swapping the old tablets for the new ones, and re-sealing the chamber. ZWO provides detailed instructions in their camera manuals and online documentation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-DESICC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPN\u003c\/td\u003e\n\u003ctd\u003eZWO Desicc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eAll ZWO ASI Cooled Cameras\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eZWO - 2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eOverview of ASI Cooled Cameras (4.13 MB)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/astronomy-imaging-camera.com\/manuals-guides\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967433666845,"sku":"ZWO-Desicc","price":27.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-Desiccant-Tablets-1__13013.1596910054.1280.1280.jpg?v=1684341840"},{"product_id":"zwo-efw-7-x-36mm","title":"ZWO EFW - 7 x 36mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eHolds seven 36mm unmounted filters\u003c\/li\u003e\n\u003cli\u003eAdds only 20mm of back focus to the imaging train\u003c\/li\u003e\n\u003cli\u003ePowered and controlled via a single USB-C cable\u003c\/li\u003e\n\u003cli\u003eWeighs 515g for minimal impact on mount balance\u003c\/li\u003e\n\u003cli\u003eCompatible with filter thicknesses from 1.9mm to 3.5mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO EFW - 7 x 36mm Electronic Filter Wheel\u003c\/h2\u003e\n\u003cp\u003eThe ZWO EFW for 7 x 36mm filters automates your imaging sequence with a robust, lightweight design that adds only 20mm of back focus to your optical train. Its 7-position carousel accepts unmounted 36mm filters from 1.9mm to 3.5mm thick, accommodating a full LRGB and SHO narrowband pallet in a single unit. The entire 515g assembly is powered and controlled via a single USB-C cable, drawing a minimal 120mAh at 5V to keep your setup clean and reliable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAutomated 7-Filter Sequencing in a 20mm Profile\u003c\/h3\u003e\n\u003cp\u003eThis filter wheel is engineered for efficiency in complex imaging projects. The 7-position capacity allows you to house both broadband (LRGB) and narrowband (SHO) filters simultaneously, eliminating the need for manual swaps during an imaging session. At only 20mm thick, it preserves critical back focus, enabling use with a wide range of reducers, flatteners, and off-axis guiders without compromising optical performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePrecision Control and Reliable Mechanics\u003c\/h3\u003e\n\u003cp\u003eAt the core of the EFW is a high-precision Japanese NPM stepper motor, ensuring quiet, repeatable filter selection with bidirectional rotation for the shortest path. The body is CNC-machined from a single block of aircraft-grade aluminum for rigidity and light weight. This robust construction prevents flexure and maintains optical alignment as the carousel rotates, ensuring your calibration frames remain consistent throughout the night.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-Cable Operation:\u003c\/strong\u003e A single USB-C port handles both power and data, drawing a low 120mAh at 5V. This allows it to be powered directly from a ZWO cooled camera's USB hub, reducing cable clutter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Camera \u0026amp; OAG Integration:\u003c\/strong\u003e The housing features direct-connect bolt patterns for seamless integration with ZWO cameras and the M68 Off-Axis Guider, creating a solid, flex-free imaging train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRedesigned Light Seal:\u003c\/strong\u003e This latest version features an improved chassis seal and an enclosed motor compartment, preventing stray light from contaminating long exposures and critical calibration frames.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eZWO 7x36mm EFW vs. 8x1.25\"\/31mm EFW\u003c\/h3\u003e\n\u003cp\u003eWhile both filter wheels offer automated control, the choice depends entirely on your camera sensor and telescope's corrected image circle. The 36mm format is the superior choice for modern APS-C sensors, while the 1.25\"\/31mm EFW is better suited for smaller sensors.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompetitor Advantage (8x1.25\"\/31mm EFW):\u003c\/strong\u003e Offers one additional filter slot and is compatible with the vast, affordable selection of 1.25\" mounted filters. It is also typically lighter and more compact.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis Product's Advantage (7x36mm EFW):\u003c\/strong\u003e The unmounted 36mm filters provide a larger clear aperture, completely preventing vignetting on popular APS-C sensors like the IMX571 used in the ASI2600. The 1.25\" format will often clip the corners of the field with these larger sensors, especially on faster optical systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of the ZWO EFW 7x36mm for an APS-C camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is preventing vignetting. The 36mm clear aperture of the unmounted filters is large enough to fully illuminate APS-C sensors (like the Sony IMX571) without the corner-darkening that often occurs when using smaller 1.25\" or 31mm filters, especially in faster f-ratio telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use filters from other brands in the ZWO EFW 7x36mm?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, you can use 36mm unmounted filters from any manufacturer, provided their thickness is between \u003cstrong\u003e1.9mm and 3.5mm\u003c\/strong\u003e. Filters outside this range may not seat correctly or could interfere with the wheel's rotation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow is the ZWO EFW 7x36mm powered and controlled?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe filter wheel is powered and controlled through a single \u003cstrong\u003eUSB-C cable\u003c\/strong\u003e. It draws a very low \u003cstrong\u003e120mAh at 5V\u003c\/strong\u003e, which allows it to be powered directly from the USB hub on a ZWO cooled camera, minimizing cable drag and complexity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I achieve the standard 55mm back focus with the ZWO EFW 7x36mm?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eZWO provides various adapters to achieve 55mm back focus with their cameras. Typically, this involves connecting the EFW (which consumes 20mm) directly to the camera (e.g., ASI2600 with its 17.5mm native back focus) and then using the appropriate combination of included M54\/M48 adapters and spacers to reach the required distance from your flattener or reducer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the ZWO EFW 7x36mm work for imaging the Orion Nebula (M42) with an 8-inch f\/4 Newtonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. For an f\/4 system with an APS-C camera, the 36mm filters are essential to avoid vignetting on a large, bright target like the Orion Nebula (M42). The 7-slot capacity lets you load LRGB filters for the core and SHO filters to capture the faint, expansive hydrogen-alpha structures in the surrounding molecular cloud, all in one automated session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the included filter masks for the ZWO EFW 7x36mm?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe included filter masks are designed to block stray light that might reflect off the edges of the filter glass itself. They are placed over the filters during installation to further reduce internal reflections and improve the contrast of your final images, which is especially important for long narrowband exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Wheel Type\u003c\/td\u003e\n\u003ctd\u003eElectronic Filter Wheel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Capacity\u003c\/td\u003e\n\u003ctd\u003e7 Positions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Filter Size\u003c\/td\u003e\n\u003ctd\u003e36mm Unmounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Filter Thickness\u003c\/td\u003e\n\u003ctd\u003e1.9mm - 3.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus Consumption\u003c\/td\u003e\n\u003ctd\u003e20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Input\u003c\/td\u003e\n\u003ctd\u003eUSB-C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e120mAh @ 5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e515g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Construction\u003c\/td\u003e\n\u003ctd\u003eCNC-milled aircraft-grade aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor\u003c\/td\u003e\n\u003ctd\u003eJapanese NPM stepper motor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO EFW 7x36mm Body\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM54M-M48F Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM54M-M42F Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM48 to M54 Step-Up Ring\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUSB 2.0 Cable (2m)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUSB 2.0 Cable (0.5m)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFilter Masks\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 10\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM2.5x6 Screws\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 6\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM2x4 Screws\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 26\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ePhillips Head Screwdriver\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967435665693,"sku":"ZWO-EFW-7x36-II","price":335.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-EFW-7x36-II-1__59677.1642537335.1280.1280.jpg?v=1684341878"},{"product_id":"zwo-efw-8-x-1-25-or-31mm","title":"ZWO EFW - 8 x 1.25\" or 31mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n    \u003cli\u003e\n        For 1.25\" or 31mm filters\n    \u003c\/li\u003e\n    \u003cli\u003e\n        Easy to install on the telescope and the camera\n    \u003c\/li\u003e\n    \u003cli\u003e\n        Filters are easy to install\n    \u003c\/li\u003e\n    \u003cli\u003e\n        Made with NPM Stepper Motor from Japan\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n    \u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n    \u003cli\u003eDiagrams \u0026amp; Ressources\u003c\/li\u003e\n    \u003cli\u003eIn the Box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n    \u003cli class=\"active\"\u003e       \n        \u003cdiv\u003e\n            \u003c!-- Title image text --\u003e\n            \u003cdiv class=\"DAV-bg-light\"\u003e\n                \u003c!-- Main Image --\u003e\n                \u003cdiv class=\"DAV-section-center\"\u003e\n                    \u003ch2\u003eZWO EFW 8 x 1.25″\/31mm Electronic Filter Wheel - Overview\u003c\/h2\u003e\n                    \u003cp\u003e\n                        Compact, Lightweight, and Reliable\n                    \u003c\/p\u003e\n                    \u003cp\u003e\n                        The ZWO EFW (Electronic Filter Wheel), larger yet impressively lightweight at just 400 grams (14 oz), is the ideal choice for astrophotographers seeking precision and simplicity in filter management.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \n            \u003cdiv class=\"DAV-section-container\"\u003e\n                \u003cdiv class=\"DAV-section-img\"\u003e\n                    \u003cimg src=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/20f5cedd84256b50847ecab4815be0b4.jpg\" alt=\"ZWO EFW 8 x 1.25″\/31mm Electronic Filter Wheel - Slim and Sturdy Design\"\u003e\n                \u003c\/div\u003e\n\n                \u003cdiv class=\"DAV-section-text\"\u003e\n                    \u003ch3\u003e\n                        Slim and Sturdy Design\n                    \u003c\/h3\u003e                \n                    \u003cp\u003e\n                        CNC-milled from aircraft-grade aluminum for durability.\n                    \u003c\/p\u003e\n                    \u003cp\u003e\n                        Ultra-thin design with a body thickness of just 20 mm, ensuring portability and easy integration into your astrophotography setup.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003cdiv class=\"DAV-section-container\"\u003e\n                \u003cdiv class=\"DAV-section-text\"\u003e\n                    \u003ch3\u003e\n                        High-Quality Stepper Motor\n                    \u003c\/h3\u003e                \n                    \u003cp\u003e\n                        Powered by a reliable NPM stepper motor from Japan, ensuring long-lasting performance and smooth, precise filter rotation.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n\n                \u003cdiv class=\"DAV-section-img\"\u003e\n                    \u003cimg src=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/fdb518c99db577d8cf73e1d298e469a4.jpg\" alt=\"ZWO EFW 8 x 1.25″\/31mm Electronic Filter Wheel - High-Quality Stepper Motor\"\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003cdiv class=\"DAV-section-container\"\u003e\n                \u003cdiv class=\"DAV-section-text\"\u003e\n                    \u003ch3\u003e\n                        Efficient Power Usage\n                    \u003c\/h3\u003e                \n                    \u003cp\u003e\n                        Operates with a single USB cable for both power and control.\n                    \u003c\/p\u003e\n                    \u003cp\u003e\n                        Power consumption is approximately 120mAh @ 5V, allowing operation directly through the USB hub of a Cooled ASI Camera.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003cdiv class=\"DAV-section-container\"\u003e\n                \u003cdiv class=\"DAV-section-text\"\u003e\n                    \u003ch3\u003e\n                        Filter Compatibility\n                    \u003c\/h3\u003e                \n                    \u003cp\u003e\n                        1.25″ filters: No vignetting with telescopes up to an f\/5 focal ratio.\n                    \u003c\/p\u003e\n                    \u003cp\u003e\n                        31mm filters: No vignetting with lenses up to f\/2.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003cdiv class=\"DAV-section-container\"\u003e\n                \u003cdiv class=\"DAV-section-img\"\u003e\n                    \u003cimg src=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/1895f678be061f77d17fd06a214ee97b.jpg\" alt=\"ZWO EFW 8 x 1.25″\/31mm Electronic Filter Wheel - Installation Instructions for 1.25 filters\"\u003e\n                \u003c\/div\u003e\n\n                \u003cdiv class=\"DAV-section-text\"\u003e\n                    \u003ch3\u003e\n                        Installation Instructions - For 1.25\" Filters\n                    \u003c\/h3\u003e                \n                    \u003col\u003e\n                        \u003cli\u003eEnsure filters are threaded (length \u0026lt; 3mm) or unthreaded (height \u0026lt; 7mm).\u003c\/li\u003e\n                        \u003cli\u003eRemove the back cover of the EFW.\u003c\/li\u003e\n                        \u003cli\u003eLay the wheel flat and screw in the filters.\u003c\/li\u003e\n                        \u003cli\u003eReattach the back cover.\u003c\/li\u003e\n                    \u003c\/ol\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003cdiv class=\"DAV-section-container\"\u003e\n                \u003cdiv class=\"DAV-section-text\"\u003e\n                    \u003ch3\u003e\n                        Installation Instructions - For 31mm Filters\n                    \u003c\/h3\u003e                \n                    \u003col\u003e\n                        \u003cli\u003eUse the included M2 screws and washers.\u003c\/li\u003e\n                        \u003cli\u003eRemove the back cover and lay the wheel flat.\u003c\/li\u003e\n                        \u003cli\u003eCarefully place filters into the designated recesses.\u003c\/li\u003e\n                        \u003cli\u003eAttach washers and secure with screws.\u003c\/li\u003e\n                        \u003cli\u003eReattach the back cover.\u003c\/li\u003e\n                    \u003c\/ol\u003e\n                \u003c\/div\u003e\n\n                \u003cdiv class=\"DAV-section-img\"\u003e\n                    \u003cimg src=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/f38717e0038979dd2c25aa97aa2d1c66.jpg\" alt=\"ZWO EFW 8 x 1.25″\/31mm Electronic Filter Wheel - Installation Instructions - For 31mm Filters\"\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003cdiv class=\"DAV-section-container\"\u003e\n                \u003cdiv class=\"DAV-section-text\"\u003e\n                    \u003ch3\u003e\n                        Ease of Use\n                    \u003c\/h3\u003e                \n                    \u003col\u003e\n                        \u003cli\u003eConnect the EFW via the included USB 2.0 cable.\u003c\/li\u003e\n                        \u003cli\u003eInstall the ASCOM driver to begin operation.\u003c\/li\u003e\n                        \u003cli\u003eControl the EFW via ZWO Filter Wheel (1) or ZWO Filter Wheel (2), allowing simultaneous control of two EFWs within compatible software.\u003c\/li\u003e\n                    \u003c\/ol\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/li\u003e\n    \n    \u003cli\u003e\n        \u003ch2\u003eMechanical Diagram\u003c\/h2\u003e\n        \u003cimg src=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/7a159a536f47c017eb492297bb45c270-1.png\" alt=\"ZWO EFW 8 x 1.25″\/31mm Electronic Filter Wheel - Diagram\" class=\"\"\u003e\n        \u003ch2\u003eHow to connect with the camera and telescope?\u003c\/h2\u003e\n        \u003cimg src=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/8e9267a03f4d32e6fb335580c7f87977.png\" alt=\"ZWO EFW 8 x 1.25″\/31mm Electronic Filter Wheel - How to connect with the camera and telescope?\"\u003e\n    \u003c\/li\u003e\n\n    \u003cli\u003e\n        \u003cul class=\"DAV-grid\"\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO_8x1.25-31_-_efw_body.png?v=1737476229\" alt=\"ZWO EFW 8 x 1.25″\/31mm Electronic Filter Wheel - In The Box\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003e\n                        8x31mm EFW body\n                    \u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO_8x1.25-31_-_1.25_cover.png?v=1737476229\" alt=\"ZWO EFW 8 x 1.25″\/31mm Electronic Filter Wheel - In The Box\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003e\n                        1.25″ cover\n                    \u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO_8x1.25-31_-_1.25T_Nosepiece.png?v=1737476229\" alt=\"ZWO EFW 8 x 1.25″\/31mm Electronic Filter Wheel - In The Box\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003e\n                        T2 nosepiece\n                    \u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO_8x1.25-31_-_1.25_holder.png?v=1737476229\" alt=\"ZWO EFW 8 x 1.25″\/31mm Electronic Filter Wheel - In The Box\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003e\n                        1.25″ holder(with cover and 2 screws)\n                    \u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO_8x1.25-31_-_T2-T2_Adapter.png?v=1737476229\" alt=\"ZWO EFW 8 x 1.25″\/31mm Electronic Filter Wheel - In The Box\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003e\n                        T2-T2 adapter(male)\n                    \u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO_8x1.25-31_-_A_bag_of_filter_masks.png?v=1737476229\" alt=\"ZWO EFW 8 x 1.25″\/31mm Electronic Filter Wheel - In The Box\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003e\n                        A bag of filter masks (9pcs\/bag)\n                    \u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO_8x1.25-31_-_USB2.0_Cable.png?v=1737476229\" alt=\"ZWO EFW 8 x 1.25″\/31mm Electronic Filter Wheel - In The Box\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003e\n                        USB2.0 2m cable\n                    \u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO_8x1.25-31_-_Philips_Screwdriver.png?v=1737476229\" alt=\"ZWO EFW 8 x 1.25″\/31mm Electronic Filter Wheel - In The Box\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003e\n                        Phillips screwdriver\n                    \u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO_8x1.25-31_-_Bag_of_M2_4_screws.png?v=1737476229\" alt=\"ZWO EFW 8 x 1.25″\/31mm Electronic Filter Wheel - In The Box\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003e\n                        A bag of M2 screws\n                    \u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003c!-- Add more items as needed --\u003e\n        \u003c\/ul\u003e          \n    \u003c\/li\u003e\n\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967437107485,"sku":"ZWO-EFW-8x1.25","price":335.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-EFW-8-x-1-25-inch-or-31mm-7-x-36mm-1__90591.1596910055.1280.1280.jpg?v=1684341916"},{"product_id":"zwo-eos-lens-adapter-for-efw","title":"ZWO EOS Lens Adapter for EFW","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects Canon EOS lenses to ZWO Electronic Filter Wheels (EFW)\u003c\/li\u003e\n\u003cli\u003eEngineered for ZWO cameras with 6.5mm back focus (e.g., ASI1600)\u003c\/li\u003e\n\u003cli\u003eEstablishes the correct 17.5mm back focus distance for the optical train\u003c\/li\u003e\n\u003cli\u003eSecond-generation design with an improved, secure locking mechanism\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO EFW-EOS Lens Adapter for 6.5mm Back Focus Cameras\u003c\/h2\u003e\n\u003cp\u003eThe ZWO EFW-EOS Adapter is the essential mechanical link for attaching Canon EOS lenses to a ZWO Electronic Filter Wheel (EFW) and a cooled camera with 6.5mm of back focus. This second-generation adapter features an improved locking mechanism and correctly sets the total back focus to 17.5mm, enabling you to use your high-quality camera lenses for wide-field astrophotography with filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCanon Lens Integration for 6.5mm ZWO Cameras\u003c\/h3\u003e\n\u003cp\u003eThis adapter solves the specific back focus challenge of using Canon EOS lenses with ZWO's popular 6.5mm back focus cameras, like the ASI1600 series, and an EFW. By bridging the mechanical and spacing gap, it enables wide-field imaging with proven telephoto optics, correctly establishing the 17.5mm distance required for a sharp, flat field with a filter wheel in the optical train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eGeneration II Locking Mechanism\u003c\/h3\u003e\n\u003cp\u003eAs the second-generation version, this ZWO EFW-EOS adapter has been redesigned with a more robust and secure locking mechanism. You gain a more rigid connection between your lens and filter wheel, minimizing tilt and ensuring your optical train remains perfectly collinear throughout an imaging session, even with heavier telephoto lenses.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRigid Connection:\u003c\/strong\u003e Reduces the potential for flexure and optical tilt compared to the first-generation model.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Mounting:\u003c\/strong\u003e Confidently attach heavy lenses without worrying about slippage or unwanted rotation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eASI1600 \u0026amp; EFW Wide-Field Imaging\u003c\/h3\u003e\n\u003cp\u003eThe primary use for this adapter is pairing a workhorse camera like the ZWO ASI1600 with a 7 or 8-position EFW and your existing Canon lenses. This combination turns your camera lens into a powerful, compact astrograph for capturing large targets like the Andromeda Galaxy (M31) or the Rho Ophiuchi cloud complex without requiring a telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the ZWO EFW-EOS adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter allows you to connect a \u003cstrong\u003eCanon EOS lens\u003c\/strong\u003e to a \u003cstrong\u003eZWO Electronic Filter Wheel (EFW)\u003c\/strong\u003e, which is then connected to a ZWO camera with \u003cstrong\u003e6.5mm of back focus\u003c\/strong\u003e. It creates the correct 17.5mm spacing needed for sharp focus across the entire sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I use this adapter to image the North American Nebula (NGC 7000) with my Canon lens and ASI1600?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAttach your Canon lens to this adapter, thread the adapter onto the front of your ZWO EFW, and then connect your ZWO ASI1600 camera to the back of the EFW. This creates a rigid, wide-field imaging rig perfect for large emission nebulae like NGC 7000, allowing you to use narrowband or LRGB filters with your camera lens.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the ZWO EFW-EOS adapter work with a full-frame camera like the ASI6200MC Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter is specifically designed for ZWO cameras with a \u003cstrong\u003e6.5mm back focus\u003c\/strong\u003e. Cameras like the ASI6200MC Pro have a different native back focus (17.5mm) and require a different adapter solution for use with Canon lenses and a filter wheel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main improvement in this second-generation ZWO EFW-EOS adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe key improvement is a redesigned, more secure \u003cstrong\u003elocking mechanism\u003c\/strong\u003e. This ensures a tighter, more rigid connection to the Canon lens, which is critical for preventing optical tilt and flexure, especially when using heavier telephoto lenses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I control the aperture of my Canon EOS lens with this adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the ZWO EFW-EOS adapter provides a purely \u003cstrong\u003emechanical connection\u003c\/strong\u003e. It does not transmit electronic signals for aperture or autofocus control. Aperture must be set on the lens itself, if the lens has a manual aperture ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need this adapter to connect my Canon lens directly to a ZWO camera without a filter wheel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter is specifically for integrating a ZWO Electronic Filter Wheel (EFW) into the imaging train. For a direct camera-to-lens connection, you would need a different ZWO EOS-T2 adapter designed for that purpose.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU Number\u003c\/td\u003e\n\u003ctd\u003eZWO-EFW-EOS-II\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Mount\u003c\/td\u003e\n\u003ctd\u003eCanon EOS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Connection\u003c\/td\u003e\n\u003ctd\u003eZWO EFW (Electronic Filter Wheel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired Camera Back Focus\u003c\/td\u003e\n\u003ctd\u003e6.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResulting System Back Focus\u003c\/td\u003e\n\u003ctd\u003e17.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFilter Wheel Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eShort EOS Adapter for EFW (Gen II)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967437992221,"sku":"ZWO-EFW-EOS-II","price":69.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-EOS-Lens-Adapter-for-EFW-1__74924.1596910055.1280.1280.jpg?v=1684341937"},{"product_id":"zwo-t2-to-canon-eos-ef-mount-lens-adapter","title":"ZWO T2 to Canon EOS EF-Mount Lens Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects Canon EF lenses to any ZWO camera with M42 T2-threads\u003c\/li\u003e\n\u003cli\u003eTwo-part design supports cameras with 12.5mm or 17.5mm back focus\u003c\/li\u003e\n\u003cli\u003eIncludes a 5mm T2 extender for precise spacing adjustment\u003c\/li\u003e\n\u003cli\u003eInternal threads accept standard 2\" astronomy filters\u003c\/li\u003e\n\u003cli\u003eSecond-generation design with an improved, secure lens locking mechanism\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO EOS-T2 II Lens Adapter for ASI Cameras\u003c\/h2\u003e\n\u003cp\u003eThe ZWO EOS-T2 II adapter connects your Canon EF lenses to any ZWO camera, utilizing a two-part design with an included 5mm T2 extender to achieve perfect back focus for cameras requiring either 12.5mm or 17.5mm. This second-generation model features an improved locking mechanism for a rigid, flex-free connection to your M42-threaded camera body.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDual Back Focus for 12.5mm and 17.5mm ZWO Cameras\u003c\/h3\u003e\n\u003cp\u003eThis adapter is engineered to work with the two primary back focus standards across the ZWO camera lineup. By adding or removing the included 5mm T2 extender, you can ensure your Canon lens reaches infinity focus with nearly any ZWO camera.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e17.5mm Back Focus (Adapter Only):\u003c\/strong\u003e Use the main adapter body without the extender for all cooled ASI cameras, as well as uncooled models like the ASI174, ASI294, ASI183, ASI1600, ASI533, and ASI2600.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12.5mm Back Focus (Adapter + Extender):\u003c\/strong\u003e Attach the 5mm T2 extender for smaller-format cameras, including the ASI120, ASI224, ASI290, ASI178, and ASI385.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAccepts 2\" Filters for Lens-Based Narrowband Imaging\u003c\/h3\u003e\n\u003cp\u003eThe interior of the EOS-T2 adapter is threaded to accept standard 2\" (M48x0.75) astronomy filters. This critical feature allows you to use light pollution, LRGB, or narrowband filters directly with your high-quality camera lenses, opening up new possibilities for wide-field astrophotography from any location.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eImproved Gen II Locking Mechanism\u003c\/h3\u003e\n\u003cp\u003eAs the second generation of this adapter, the EOS-T2 II features a redesigned and more robust locking mechanism. This ensures your Canon EF lens is held securely to the camera with zero rotational play or flexure, which is critical for maintaining sharp focus and consistent flat frames throughout an imaging session, even with heavier telephoto lenses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know if I need the 5mm extender for my ZWO camera with the EOS-T2 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe configuration depends entirely on your camera's native back focus. \u003cstrong\u003eIf you have a cooled ZWO camera or an uncooled model like the ASI1600\/183\/294\/533\/2600, you do not need the extender.\u003c\/strong\u003e These cameras have a 17.5mm back focus. If you have a smaller guide-style or planetary camera like the ASI120\/224\/290, you must use the included 5mm extender to reach the required 12.5mm back focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I control aperture or autofocus with the ZWO EOS-T2 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The ZWO EOS-T2 is a purely mechanical adapter. It does not have any electronic contacts to communicate with the Canon EF lens. You must set the aperture on the lens manually before attaching it to the adapter (if possible) or shoot wide open. Focusing must also be done manually using your imaging software's focusing aids.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter work with Canon EF-S lenses?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is designed specifically for the \u003cstrong\u003eCanon EF mount\u003c\/strong\u003e. While some EF-S lenses might physically attach, their rear element often protrudes further back, which can interfere with filters or the camera sensor window. We recommend using only EF-mount lenses to ensure compatibility and avoid potential damage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install a 2\" filter with the ZWO EOS-T2 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter has female M48x0.75 threads on the inside. Simply screw your 2\" filter directly into these threads on the camera side of the adapter before attaching the adapter to your ZWO camera body. This places the filter in the optical path between the lens and the sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI want to image the Andromeda Galaxy (M31) with my ASI533MC Pro and a Canon 135mm lens. What configuration do I use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor your ASI533MC Pro, you will use the ZWO EOS-T2 adapter \u003cstrong\u003ewithout the 5mm extender\u003c\/strong\u003e. The ASI533MC Pro has a native 17.5mm back focus, which the main adapter body is designed for. You can thread a 2\" light pollution filter inside the adapter to help manage skyglow and improve contrast on M31.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ZWO EOS-T2 adapter for all-sky imaging with a fisheye lens and my ASI178MC?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an excellent application. The ASI178MC has a 12.5mm back focus, so you must use the ZWO EOS-T2 adapter \u003cstrong\u003ewith the 5mm T2 extender attached\u003c\/strong\u003e. This combination will allow your Canon EF-mount fisheye lens to achieve proper infinity focus for capturing meteor showers or the entire Milky Way arch.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-EOS-T2-II\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Mount\u003c\/td\u003e\n\u003ctd\u003eCanon EF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Mount\u003c\/td\u003e\n\u003ctd\u003eM42x0.75 (T2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eEOS-T2 Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e5mm T2 Extender\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967438024989,"sku":"ZWO-EOS-T2-II","price":83.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-EOS-T2-Adapter-1__03240.1596910055.1280.1280.jpg?v=1684341939"},{"product_id":"zwo-fan-for-cooled-pro-cameras","title":"ZWO Replacement Fan for ASI Cameras","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eOfficial ZWO OEM replacement fan\u003c\/li\u003e\n\u003cli\u003eRestores original cooling performance to Cooled\/Pro cameras\u003c\/li\u003e\n\u003cli\u003eIncludes all necessary mounting hardware\u003c\/li\u003e\n\u003cli\u003eBacked by a 2-year manufacturer warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO Replacement Fan for ASI Cooled\/Pro Cameras\u003c\/h2\u003e\n\u003cp\u003eThis official ZWO Replacement Fan is the factory-correct component for restoring full thermal performance to your ASI Cooled or Pro camera, backed by a direct 2-year warranty. If your camera's fan has failed or become noisy, this OEM part ensures you can once again achieve the maximum cooling delta required for clean, low-noise long-exposure imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCompatibility Check: Incompatible with 3 Camera Series\u003c\/h3\u003e\n\u003cp\u003eThis replacement fan is designed specifically for the original generation of ZWO Cooled and Pro cameras. It is critical to confirm your camera model before purchasing, as this fan is not a universal fit. The mechanical housing and electrical connectors are different on newer models.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot for Large Format Pro Models:\u003c\/strong\u003e This fan is incompatible with the ZWO ASI6200 and ASI2600 series cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot for AIR Models:\u003c\/strong\u003e It will not fit any camera in the ZWO AIR or Smart Camera line, such as the ASI585MC AIR.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot for Newer Pro Models:\u003c\/strong\u003e It is not compatible with updated Pro cameras that feature the newer sandblasted body finish.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOEM Replacement Backed by a 2-Year Warranty\u003c\/h3\u003e\n\u003cp\u003eWhen your camera's active cooling is compromised, thermal noise quickly degrades image quality. This is a genuine ZWO part, guaranteeing the correct airflow and voltage specifications to bring your camera's TEC cooler back to its full potential. The kit includes the necessary mounting hardware for a direct, drop-in replacement, supported by a 2-year warranty for reliable operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I confirm this ZWO Replacement Fan fits my camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe easiest way is to check your camera's model and finish. This fan fits \u003cstrong\u003eoriginal ZWO Cooled and Pro cameras\u003c\/strong\u003e (e.g., ASI1600MM Pro, ASI294MC Pro with the smooth, non-sandblasted finish). It does \u003cstrong\u003enot\u003c\/strong\u003e fit ASI6200\/ASI2600 models, any AIR\/Smart cameras, or any newer Pro cameras with the sandblasted texture.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the ZWO Replacement Fan include mounting screws?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the fan comes with the required attachment hardware. You will not need to source any additional screws for installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this ZWO Replacement Fan fix my original ASI1600MM Pro that isn't cooling properly?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIf the fan has audibly failed or stopped spinning, then this replacement part is very likely the correct solution. A functioning fan is essential for the thermoelectric cooler (TEC) to dissipate heat. This part is the correct fit for an original ASI1600MM Pro.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have an ASI2600MC Pro with a dead fan. Is this the correct ZWO replacement fan?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this is not the correct part. The ZWO Replacement Fan (ZWO-FAN) is specifically listed as \u003cstrong\u003eincompatible\u003c\/strong\u003e with the ASI2600 and ASI6200 series cameras. You will need to source the specific fan for that camera model.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat tools are needed to install the ZWO Replacement Fan?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTypically, you will only need a small Phillips head screwdriver to remove the camera's outer housing and the old fan's mounting screws. The fan connects via a small plug that does not require soldering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the warranty for the ZWO Replacement Fan tied to my camera's original purchase date?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The ZWO Replacement Fan comes with its own independent 2-year warranty that begins from the date you purchase the fan itself, regardless of your camera's warranty status.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-FAN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eOriginal ZWO ASI Cooled and Pro series cameras only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncompatible Models\u003c\/td\u003e\n\u003ctd\u003eASI6200, ASI2600, AIR series, newer Pro models with sandblasted finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO Cooling Fan\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eMounting Hardware\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Fan (40 x 40 x 10mm)","offer_id":50344323514653,"sku":"ZWO-FAN","price":21.0,"currency_code":"CAD","in_stock":true},{"title":"Fan 50 (50 x 50 x 10mm)","offer_id":50344323547421,"sku":"ZWO-FAN-50","price":21.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-Fan-for-Cooled-Pro-Cameras-1__26682.1596910055.1280.1280.jpg?v=1684341941"},{"product_id":"zwo-filter-drawer-v2-m42","title":"ZWO Filter Drawer V2 - M42","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAccepts standard 2-inch mounted filters\u003c\/li\u003e\n\u003cli\u003eAdds a precise 21mm to the optical path\u003c\/li\u003e\n\u003cli\u003eM42 x 0.75 female threads on the camera side\u003c\/li\u003e\n\u003cli\u003eM48 x 0.75 female threads on the telescope side\u003c\/li\u003e\n\u003cli\u003eMagnetic holder secured by a mechanical lock screw\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO Gen 2 M42 x 0.75 Filter Drawer for 2\" Filters\u003c\/h2\u003e\n\u003cp\u003eThe ZWO Gen 2 M42 x 0.75 Filter Drawer for 2\" Filters integrates into your imaging train with a precise 21mm optical thickness, a critical value for achieving correct back focus with most correctors. It connects to your camera via M42 x 0.75 threads and to your telescope with M48 x 0.75 threads, and includes an M42-M48 adapter ring for additional hardware compatibility. This second-generation design holds any standard 2-inch filter securely, using strong magnets and a mechanical locking screw to eliminate filter shift and light leaks during long exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eZero-Flexure Holder for 2-Inch Filters\u003c\/h3\u003e\n\u003cp\u003eFor long-exposure astrophotography, any movement or light leak in the optical path can degrade the final image. The Gen 2 drawer addresses this by using powerful magnets to seat the filter holder, which is then secured with a dedicated locking screw. This two-point system ensures the 2-inch filter remains perfectly orthogonal to the light path, preventing tilt and ensuring your flat frames remain valid even after slewing across the sky.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e21mm Optical Path with M42 \u0026amp; M48 Threads\u003c\/h3\u003e\n\u003cp\u003eAchieving the standard 55mm back focus distance is simplified with this filter drawer's 21mm total optical thickness. The body features M48x0.75 female threads on the telescope side for direct connection to most coma correctors and field flatteners. On the camera side, M42x0.75 female threads provide a secure link to ZWO's lineup of APS-C and smaller cameras. An included M42-M48 step-up ring adds flexibility for connecting to other M48-threaded accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eGen 2 vs. Gen 1: A Critical Compatibility Note\u003c\/h3\u003e\n\u003cp\u003eThis Gen 2 Filter Drawer is a complete redesign focused on light leak prevention and mechanical stability. As a result, the physical dimensions of the filter holder have changed. Spare filter holders purchased for the first-generation (Gen 1) ZWO M42 filter drawer are not compatible with this Gen 2 housing, and vice-versa. This drawer is a self-contained system and should not be mixed with first-generation components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat size filters does the ZWO M42 Filter Drawer V2 accept?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO M42 Filter Drawer V2 is designed to hold standard \u003cstrong\u003e2-inch mounted filters\u003c\/strong\u003e. The internal filter holder has M48x0.75 female threads to accept the male threads on the filter cell.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Gen 2 ZWO M42 Filter Drawer compatible with filter holders from the first generation?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eNo.\u003c\/strong\u003e This is a critical point of incompatibility. The Gen 2 filter drawer and its holders have been redesigned and are not physically compatible with the holders from the first-generation (Gen 1) ZWO filter drawer. You must use Gen 2 holders with this Gen 2 drawer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ZWO M42 Filter Drawer V2 fit into an imaging train requiring 55mm of back focus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe filter drawer itself has an optical thickness of \u003cstrong\u003e21mm\u003c\/strong\u003e. To achieve a standard 55mm back focus, you would subtract this from the total. You will need an additional \u003cstrong\u003e34mm\u003c\/strong\u003e of spacers (55mm - 21mm = 34mm) between the filter drawer and your camera sensor to reach the correct distance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the thread sizes on the ZWO M42 Filter Drawer V2?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe filter drawer has two primary connection threads:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelescope Side:\u003c\/strong\u003e M48x0.75 female threads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera Side:\u003c\/strong\u003e M42x0.75 female threads (T-threads).\u003c\/li\u003e\n\u003cli\u003eIt also includes an M42 male to M48 female adapter for additional configurations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen imaging the Andromeda Galaxy (M31) with a color camera, how does the ZWO M42 Filter Drawer V2 help?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO M42 Filter Drawer V2 allows you to quickly swap between different 2-inch filters without unthreading your camera. For a target like the Andromeda Galaxy (M31), you could capture the core and spiral arms with a broadband light pollution filter (like an L-Pro), then quickly slide in a dual-band filter (like an L-eNhance or L-eXtreme) to gather H-alpha data from the star-forming regions, all within the same imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the locking mechanism on the ZWO M42 Filter Drawer V2 prevent imaging problems?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe system uses both magnets for initial seating and a \u003cstrong\u003emanual lock screw\u003c\/strong\u003e for final security. This prevents the filter from shifting as the telescope slews, which can cause optical tilt and ruin guiding or image sharpness. The tight seal created by this system also blocks stray light, which is essential for eliminating gradients and reflections during long exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-FD-M42-II\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Type\u003c\/td\u003e\n\u003ctd\u003eFilter Drawer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Compatibility\u003c\/td\u003e\n\u003ctd\u003e2\" Mounted Filters (M48x0.75 threads)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Thickness\u003c\/td\u003e\n\u003ctd\u003e21 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Threads\u003c\/td\u003e\n\u003ctd\u003eM48 x 0.75 Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Threads\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75 Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eGen 2 M42 Filter Drawer Body\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eGen 2 Filter Holder for 2\" Filters\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM42-M48 Adapter Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967438844189,"sku":"ZWO-FD-M42-II","price":111.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-Filter-Drawer-M42-1__48345.1645724856.1280.1280.jpg?v=1684341956"},{"product_id":"zwo-filter-drawer-v2-m54","title":"ZWO Filter Drawer V2 - M54","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects to M54 x 0.75 threaded accessories\u003c\/li\u003e\n\u003cli\u003eAccepts standard 2\" mounted filters\u003c\/li\u003e\n\u003cli\u003eMagnetic holder for quick filter changes\u003c\/li\u003e\n\u003cli\u003eAdjustable tension screw prevents filter tilt\u003c\/li\u003e\n\u003cli\u003eIncludes M54 male to M48 female adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO Gen 2 M54 x 0.75 Filter Drawer for 2\" Filters\u003c\/h2\u003e\n\u003cp\u003eThe ZWO Gen 2 M54 Filter Drawer allows for quick, manual changes of standard 2\" filters within your M54 threaded imaging train. The included M54 male to M48 female adapter plate creates a flexible connection to a wide range of full-frame cameras and field correctors, ensuring a secure, vignetting-free light path.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSecure Magnetic Holder for 2\" Filters\u003c\/h3\u003e\n\u003cp\u003eSwapping filters in the dark is simplified by the magnetic filter holder, which snaps securely into the drawer body. For an even more robust connection, a side-mounted tension screw lets you adjust the fit, eliminating any possibility of movement or tilt that could compromise your flat frames or focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eM54 \u0026amp; M48 Threads for Full-Frame Imaging\u003c\/h3\u003e\n\u003cp\u003eNative M54 x 0.75 male and female threads allow for direct integration into larger imaging trains common with full-frame sensors and large correctors. To maximize compatibility, ZWO includes an M54 to M48 adapter, letting you connect directly to the most common thread size found on ZWO full-frame cameras and other accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eZWO Filter Drawer Gen 2 vs. Gen 1\u003c\/h3\u003e\n\u003cp\u003eThis second-generation drawer introduces a significantly improved internal seal, a critical upgrade that reduces stray light and internal reflections during long exposures. The Gen 2 model also uses stronger magnets for a more positive and secure lock when the filter holder is inserted.\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Light Sealing:\u003c\/strong\u003e Reduces internal reflections and light leaks for cleaner long-exposure images.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStronger Magnets:\u003c\/strong\u003e Ensure a firm, repeatable seating of the filter holder every time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility Note:\u003c\/strong\u003e The Gen 2 drawer is only compatible with Gen 2 filter holders. It will not work with holders from the first-generation ZWO filter drawer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat threads does the ZWO Gen 2 M54 Filter Drawer use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe drawer body has an \u003cstrong\u003eM54 x 0.75 female thread\u003c\/strong\u003e on the telescope side and an \u003cstrong\u003eM54 x 0.75 male thread\u003c\/strong\u003e on the camera side. It also includes an \u003cstrong\u003eM54 male to M48 female adapter\u003c\/strong\u003e for connecting to M48-threaded cameras or accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use my old ZWO Gen 1 filter holders with the Gen 2 M54 Filter Drawer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The ZWO Gen 2 M54 Filter Drawer is not backward-compatible. It is designed to work exclusively with the new \u003cstrong\u003eGen 2 filter holders\u003c\/strong\u003e due to changes in the design that improve light sealing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat size filters fit in the ZWO M54 Filter Drawer V2?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe included filter holder is designed to accept standard \u003cstrong\u003e2\" mounted astronomical filters\u003c\/strong\u003e, which use M48 x 0.75 threads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I connect the ZWO M54 Filter Drawer to my ZWO camera with M42 threads?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis drawer is optimized for full-frame cameras with M54 or M48 threads. To connect to a camera with smaller M42 threads (common on APS-C or smaller sensors), you would need an additional step-down adapter, such as an M48-to-M42 adapter, placed after the included M54-to-M48 ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm using an f\/4 Newtonian with a full-frame camera. Will the ZWO M54 Filter Drawer cause tilt?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO Gen 2 M54 Filter Drawer is designed to minimize tilt. The combination of strong magnets and the adjustable side tension screw creates a very rigid connection. By tightening the screw, you can eliminate any play between the holder and the drawer body, ensuring the filter remains orthogonal to the light path, which is critical in fast optical systems like an f\/4 Newtonian.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the small screw on the side of the ZWO Gen 2 M54 Filter Drawer body for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThat is the \u003cstrong\u003etension adjustment screw\u003c\/strong\u003e. It allows you to increase the pressure on the inserted filter holder. This provides two benefits: it ensures a tight fit with zero movement for imaging, and it acts as a safety lock to prevent the holder from accidentally being pulled out.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-FD-M54-II\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFilter Accessory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003eM54 x 0.75 Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection\u003c\/td\u003e\n\u003ctd\u003eM54 x 0.75 Male Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdapter Included\u003c\/td\u003e\n\u003ctd\u003eM54 Male to M48 Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Compatibility\u003c\/td\u003e\n\u003ctd\u003eStandard 2\" Mounted Filters (M48 x 0.75)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO Gen 2 M54 Filter Drawer Body\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO Gen 2 Filter Holder for 2\" Filters\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO M54 Male to M48 Female Adapter Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967439302941,"sku":"ZWO-FD-M54-II","price":111.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-Filter-Drawer-M54-1__46387.1596910056.1280.1280.jpg?v=1684341973"},{"product_id":"zwo-filter-masks","title":"ZWO Filter Masks","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eSecurely Mounts 36mm Unmounted Filters\u003c\/li\u003e\n\u003cli\u003eCompatible with All 7-Position ZWO 36mm EFWs\u003c\/li\u003e\n\u003cli\u003eIncludes M2 Mounting Screws\u003c\/li\u003e\n\u003cli\u003ePrevents Internal Light Leaks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO Filter Mask for 7x36 EFW\u003c\/h2\u003e\n\u003cp\u003eThis ZWO Filter Mask set provides the essential hardware for securely installing unmounted 36mm filters into any generation of the ZWO 7-position electronic filter wheel. The kit includes 10 individual masks and all necessary M2 screws, ensuring a firm, light-tight fit that prevents stray light from bypassing the filter and reflecting within the optical train. These masks are direct replacements, identical to the hardware included with the original filter wheel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eInstallation in 4 Steps\u003c\/h3\u003e\n\u003cp\u003eReplacing or installing filters with these masks is a straightforward process. You only need to remove the filter wheel's back cover, place your 36mm filters into their respective slots, and then use the included masks and M2 screws to lock them into position. This design ensures the filters remain perfectly seated and centered in the light path during rotation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFull Compatibility with All 7x36 EFW Models\u003c\/h3\u003e\n\u003cp\u003eThese filter masks are confirmed to be compatible with every version of the 7-position, 36mm ZWO Electronic Filter Wheel. Whether you have the first generation, the EFW II, or the current 2025 revision, this mask set will fit perfectly. This universal compatibility makes it the correct choice for any user needing to replace lost parts or wanting a spare set on hand for quick filter changes in the field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the ZWO Filter Mask for 7x36 EFW?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary purpose of these masks is to securely hold 36mm unmounted filters inside the ZWO 7-position electronic filter wheel. They press the filter against the carousel, preventing it from shifting or tilting, and block stray light from leaking around the edges of the filter, which is critical for maintaining high-contrast images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAre these masks compatible with the ZWO 5-position filter wheels?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This mask set is specifically designed for the ZWO 7x36 EFW (7-position, 36mm) models only. They will not fit the carousels for 5-position wheels or wheels designed for different filter sizes like 1.25\" or 2\".\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow many filters can I install with one ZWO Filter Mask set?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe package includes enough masks and M2 screws to install a full carousel of seven filters in your ZWO 7x36 EFW, with spares left over. This is useful in case a screw or mask is lost during installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI lost the screws for my ZWO 7x36 EFW. Does this kit include them?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this kit includes a full set of the M2 screws required to attach the masks to the filter wheel carousel. You will not need to source any additional hardware.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen switching from LRGB to narrowband filters in my ZWO 7x36 EFW, do I need new masks?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou do not need new masks if your original ones are in good condition. However, having this spare set is highly recommended. It allows you to pre-mount your narrowband filters on the spare masks, making the physical swap much faster and reducing the risk of dropping a tiny screw in the dark while working on your imaging rig.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill these masks work with filters from brands other than ZWO in my 7x36 EFW?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, as long as the filters are standard 36mm unmounted filters, these masks will provide a secure fit regardless of the filter manufacturer. They are designed to hold the filter by its edge, accommodating minor thickness variations between brands.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU Number\u003c\/td\u003e\n\u003ctd\u003eZWO-EFW-7-MASKS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPN\u003c\/td\u003e\n\u003ctd\u003eZWO EFW-7-MASKS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFilter Wheel Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eZWO 7x36mm Electronic Filter Wheels (All Generations)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eZWO - 2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO 7-Position 36 mm EFW Filter Masks\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM2 Screws\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"For EFW7x36mm","offer_id":44967439597853,"sku":"ZWO-EFW-7-MASKS","price":21.0,"currency_code":"CAD","in_stock":true},{"title":"For EFW8x31mm","offer_id":44967439630621,"sku":"ZWO-EFW-8-MASKS","price":21.0,"currency_code":"CAD","in_stock":true},{"title":"For EFWMINI","offer_id":44967439663389,"sku":"ZWO-EFW-5-MASKS","price":17.0,"currency_code":"CAD","in_stock":true},{"title":"For EFW 7 x 2\"","offer_id":48504456741149,"sku":"ZWO-EFW-2-MASKS","price":21.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-Filter-Masks-1__39812.1596910056.1280.1280.jpg?v=1684341989"},{"product_id":"zwo-ir-850nm-pass-filter-1-25","title":"ZWO IR 850nm Pass Filter – 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003ePasses Infrared Light \u0026gt; 850nm\u003c\/li\u003e\n\u003cli\u003eDramatically Steadies Planetary Views in Poor Seeing\u003c\/li\u003e\n\u003cli\u003eEnables Daylight Planetary and Lunar Imaging\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" (31.75mm) Threaded Filter Cell\u003c\/li\u003e\n\u003cli\u003eIncludes Protective Plastic Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO 850nm IR Pass Filter - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe ZWO 850nm IR Pass Filter isolates a specific slice of the near-infrared spectrum, transmitting only wavelengths longer than 850nm. Housed in a standard 1.25\" (31.75mm) threaded cell, this filter is a specialized tool for high-resolution planetary and lunar imaging, effectively bypassing the atmospheric turbulence that blurs details in the visible spectrum.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCut Through Bad Seeing at 850nm\u003c\/h3\u003e\n\u003cp\u003eAtmospheric turbulence, or \"seeing,\" is the primary obstacle to sharp planetary detail. Because longer wavelengths of light are less scattered by air currents, imaging at 850nm and beyond dramatically stabilizes the image. This allows you to resolve finer details in Jupiter's cloud bands, the Cassini Division in Saturn's rings, and subtle craterlets on the Moon, even when seeing conditions are poor or your target is low on the horizon.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDaylight Planetary Imaging Beyond 850nm\u003c\/h3\u003e\n\u003cp\u003eBy aggressively blocking all visible light below 850nm, this filter renders the daytime sky nearly black to an IR-sensitive camera. This unique capability opens up the possibility of imaging bright planets like Venus and Jupiter during daylight hours. The result is a high-contrast image of the planet against a dark background, free from the glare of the blue sky.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eZWO 850nm vs. 685nm IR Pass: Which to Choose?\u003c\/h3\u003e\n\u003cp\u003eZWO offers multiple IR Pass filters, and the choice depends on your conditions and camera. The 850nm filter is the more specialized of the two most common options.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eZWO 685nm IR Pass:\u003c\/strong\u003e This filter allows more light to reach the sensor, resulting in a brighter image and shorter exposure times. It is a great all-around choice for improving detail in average-to-poor seeing and works well with a broader range of monochrome cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZWO 850nm IR Pass:\u003c\/strong\u003e This filter is the ultimate seeing-killer. When conditions are exceptionally turbulent, the 850nm passband delivers the steadiest possible image. The trade-off is a significantly dimmer signal, which requires a camera with high IR sensitivity and potentially higher gain settings to achieve focus and capture data.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDesigned for Monochrome Imaging in a 1.25\" Cell\u003c\/h3\u003e\n\u003cp\u003eThis filter is designed exclusively for astro-imaging with a monochrome camera; the human eye is not sensitive to 850nm light, so it cannot be used for visual observation. Its performance is directly tied to the quantum efficiency of your camera in the near-infrared. For best results, pair the ZWO 850nm IR Pass filter with a mono camera known for strong IR response. The industry-standard 1.25\" (31.75mm) threaded cell fits any standard 1.25\" filter wheel or nosepiece.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ZWO 850nm filter improve imaging of Jupiter on a turbulent night?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOn nights with poor seeing, the Earth's atmosphere blurs the fine details of planets like Jupiter. The ZWO 850nm filter blocks the shorter, more easily scattered visible wavelengths and only lets the steadier, longer-wavelength infrared light through. This results in a much more stable image on your sensor, allowing you to capture sharper details in the Great Red Spot and equatorial cloud bands that would otherwise be a shimmering mess.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ZWO 850nm IR Pass filter with my color astronomy camera to image the Moon?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile some color cameras have sensitivity into the infrared, they are not ideal for the ZWO 850nm filter. The Bayer matrix on a color sensor blocks a significant portion of the already-dim 850nm signal, leading to very long exposures and noisy results. For lunar or planetary imaging with this filter, a \u003cstrong\u003emonochrome camera\u003c\/strong\u003e with high IR sensitivity is strongly recommended for the best detail and signal-to-noise ratio.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ZWO 850nm filter suitable for visual observation?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The human eye cannot see light at a wavelength of 850nm. Looking through an eyepiece with this filter attached will result in a completely black field of view. It is a specialized tool designed exclusively for use with an infrared-sensitive astronomy camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main difference between the ZWO 850nm and a 685nm IR Pass filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary difference is how aggressively they cut off visible light.\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA \u003cstrong\u003e685nm filter\u003c\/strong\u003e is a good general-purpose choice, offering a significant improvement in seeing with a relatively bright signal.\u003c\/li\u003e\n\u003cli\u003eThe \u003cstrong\u003e850nm filter\u003c\/strong\u003e provides maximum seeing stabilization for the most turbulent conditions but passes much less light, requiring a very IR-sensitive camera and longer exposures or higher gain.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy would I want to image planets during the day with the ZWO 850nm filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eImaging during the day allows you to capture planets when they are at their highest point in the sky, where atmospheric distortion is at a minimum. The ZWO 850nm filter makes this possible by blocking the visible light that makes the sky appear blue, effectively creating a dark background for your camera and allowing bright planets like Venus or Jupiter to be imaged in high contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the ZWO 850nm filter require a filter wheel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, a filter wheel is not required. The filter's 1.25\" cell is threaded to screw directly onto any standard 1.25\" camera nosepiece or accessory. However, using it in a filter wheel makes it easy to switch between the 850nm filter and other filters (like LRGB) without disassembling your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-850IR1.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eIR Pass \/ Luminance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e31.75mm (1.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eThreaded, Round\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePassband\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 850nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO 850nm IR Pass Filter in 1.25\" Cell\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ePlastic Filter Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967439859997,"sku":"ZWO-850IR1-25","price":31.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-IR-850nm-Pass-Filter-1-25-inch-1__82864.1596910056.1280.1280.jpg?v=1684341991"},{"product_id":"zwo-lrgb-optimized-filters","title":"ZWO LRGB Optimized Filters","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e1.25\" (31.75mm) Threaded Filter Set\u003c\/li\u003e\n\u003cli\u003eGreater than 92% Transmission at Passband\u003c\/li\u003e\n\u003cli\u003eBalanced 1:1:1 RGB Exposure Weighting\u003c\/li\u003e\n\u003cli\u003e1\/4 Wavefront Polished Optical Glass\u003c\/li\u003e\n\u003cli\u003e700-1100nm Infrared Wavelength Cut-Off\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO LRGB 1.25\" Premium Filter Set\u003c\/h2\u003e\n\u003cp\u003eThe ZWO LRGB 1.25\" Premium Filter Set delivers exceptional color fidelity and high-contrast data by ensuring over 92% light transmission across the critical passbands. Each filter is fine-optically polished to 1\/4 wavefront accuracy to preserve the sharpness of your telescope's optics. The set's precise 700-1100nm infrared cut-off and approximately 1:1:1 RGB color weighting simplify both image capture and processing, yielding brilliant results with modern CMOS cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOver 92% Transmission \u0026amp; 1:1:1 Color Balance\u003c\/h3\u003e\n\u003cp\u003eThis filter set captures faint signal efficiently, with each filter transmitting more than 92% of the light in its target wavelength. This high throughput reduces necessary exposure times, improving your overall signal-to-noise ratio. The coatings are engineered for an approximate 1:1:1 RGB color balance, allowing you to use similar exposure durations for each color channel and spend less time correcting color gradients in post-processing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e1\/4 Wavefront Accuracy for Maximum Sharpness\u003c\/h3\u003e\n\u003cp\u003eA filter is part of your telescope's optical train, and low-quality glass can degrade an otherwise sharp image. ZWO polishes these filters to a 1\/4 wavefront standard, ensuring they do not introduce aberrations or soften star images. Paired with multiple layers of anti-reflection coatings, this optical precision maintains high contrast and protects fine details in planetary and deep-sky targets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePrecision Off-Band Blocking Down to 700nm\u003c\/h3\u003e\n\u003cp\u003eModern monochrome CMOS sensors are highly sensitive to infrared light, which can cause star bloat and wash out color data if not properly blocked. This LRGB set features a sharp IR cut-off at 700nm, eliminating this issue entirely. The filters also incorporate a small spectral gap between the transmission bands, which helps to reject common sources of urban light pollution and further darken the sky background.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eZWO Premium vs. Standard LRGB Filters\u003c\/h3\u003e\n\u003cp\u003eWhile ZWO's standard filters offer an excellent entry into LRGB imaging, the Premium set is a significant step up in optical design for the discerning astrophotographer.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBetter Color Separation:\u003c\/strong\u003e The Premium filters have sharper cutoffs, which reduces wavelength overlap between channels for richer, more distinct colors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigher Transmission:\u003c\/strong\u003e With \u0026gt;92% transmission, the Premium filters gather more light than the standard versions, enabling deeper shots in the same amount of time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimplified Processing:\u003c\/strong\u003e The 1:1:1 color balance of the Premium set is a key advantage, removing the need for significant color weighting corrections that are often required with the standard set.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of the ZWO Premium LRGB filters over the standard set?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantages are higher transmission (\u0026gt;92%), better color separation from superior coatings, and a carefully engineered 1:1:1 color balance. This balance simplifies processing by allowing you to use roughly equal exposure times for the Red, Green, and Blue filters, resulting in a more natural color image with less correction needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the 1\/4 wavefront accuracy important for the ZWO Premium LRGB filters?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA \u003cstrong\u003e1\/4 wavefront\u003c\/strong\u003e specification means the filter's surface is extremely flat and will not distort the light passing through it. This preserves the native optical quality of your telescope, ensuring that stars remain as sharp and point-like as possible. Lower quality filters can introduce optical errors, softening the final image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo the ZWO Premium LRGB filters work well with cameras other than the ASI1600?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While they were originally optimized for the popular ZWO ASI1600MM, their transmission curves, 1:1:1 color balance, and IR-cut features are beneficial for nearly any modern monochrome astronomy camera. They are an excellent match for sensors from Sony, Gpixel, and others.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the IR-cut feature on this ZWO LRGB filter set help my images?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eMonochrome sensors are sensitive to infrared (IR) light, which focuses at a different point than visible light. Unfiltered IR causes bloated, soft-looking stars and reduces overall image contrast. The sharp \u003cstrong\u003e700-1100nm\u003c\/strong\u003e IR cut-off on these filters completely blocks this unwanted light, leading to tighter stars and more accurate color data.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will this ZWO LRGB filter set perform on the Andromeda Galaxy (M31) from a suburban location?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis set is well-suited for imaging M31 from suburban skies. The Luminance filter will capture fine detail in the dust lanes with high transmission, while the RGB filters will gather color from the core and star-forming regions. The small spectral gaps between the filter passbands help to reject common light pollution sources, increasing the contrast between the galaxy and the skyglow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the 1.25\" ZWO LRGB filters cause vignetting on my full-frame camera and f\/5 refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, significant vignetting is likely in that scenario. 1.25\" filters are best suited for cameras with smaller sensors (like APS-C or Four Thirds format) to avoid clipping the light cone. For a full-frame sensor, especially in a fast f\/5 optical system, 36mm unmounted or 2\" threaded filters are strongly recommended to ensure the entire sensor is illuminated.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-LRGB125NEW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eLRGB Filter Set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e31.75mm (1.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eThreaded, Round\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Type\u003c\/td\u003e\n\u003ctd\u003eFilter Set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eZWO 2-Year Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Luminance (UV-IR) Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Red Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Green Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Blue Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"1.25\" Round Mounted","offer_id":44967440744733,"sku":"ZWO-LRGB1.25NEW","price":207.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Round Mounted","offer_id":44967440810269,"sku":"ZWO-LRGB2","price":419.0,"currency_code":"CAD","in_stock":true},{"title":"36mm Round Unmounted","offer_id":44967440875805,"sku":"ZWO-LRGB36","price":279.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO-LRGB-Filters-Optimized-1-25-inch__12893.1596923433.1280.1280.jpg?v=1684341994"},{"product_id":"zwo-m42-adapter-for-oag","title":"ZWO M42 Adapter for OAG","description":"\u003c!-- more --\u003e\u003cp\u003e\u003cspan\u003eM4\u003c\/span\u003e\u003cspan\u003e2 adapter for main imaging camera\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_M42_adapterOAG_ZWO_M42_adapter_1_description.jpeg?v=1684341984\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_M42_adapterOAG_ZWO_M42_adapter_1_description.jpeg?v=1684341984\" alt=\"M42-adapter-OAG\" width=\"1024\" height=\"717\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_M42_adapterOAG_ZWO_M42_adapter_2_description.jpeg?v=1684341986\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_M42_adapterOAG_ZWO_M42_adapter_2_description.jpeg?v=1684341986\" alt=\"M42-adapter-OAG-SIDE\" width=\"1024\" height=\"717\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_M42_adapterOAG_ZWO_M42_adapter_3_description.jpeg?v=1684341989\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_M42_adapterOAG_ZWO_M42_adapter_3_description.jpeg?v=1684341989\" alt=\"M42adapter-OAGjpg\" width=\"1024\" height=\"853\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_M42_adapterOAG_ZWO_M42_adapter_4_description.jpeg?v=1684341991\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_ZWO_M42_adapterOAG_ZWO_M42_adapter_4_description.jpeg?v=1684341991\" alt=\"OAG1200x1000adapter\" width=\"1024\" height=\"853\"\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cdiv data-custom-tab\u003e\n\u003cp data-custom-tab-title\u003eSpecifications\u003c\/p\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967441367325,"sku":"ZWO-M42-adapter","price":25.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-M42-Adapter-for-OAG-1__63335.1596910057.1280.1280.jpg?v=1684342005"},{"product_id":"zwo-m48-m42-adapter","title":"ZWO M48-M42 Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConverts female M48x0.75 threads to female M42x0.75 T-threads\u003c\/li\u003e\n\u003cli\u003eAdds only 4 mm of optical path length to the imaging train\u003c\/li\u003e\n\u003cli\u003eStandard accessory for many ZWO Pro series cameras\u003c\/li\u003e\n\u003cli\u003eDurable black anodized aluminum construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO M48 to M42 Adapter\u003c\/h2\u003e\n\u003cp\u003eThe ZWO M48 to M42 Adapter is the essential component for connecting accessories with different thread standards, converting the wider M48 (2-inch filter) thread to the universal M42 T-thread. This simple ring uses only 4 mm of back focus, making it a compact solution for integrating filter wheels, flatteners, and cameras into a single, secure optical train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 4 mm Solution for Thread Incompatibility\u003c\/h3\u003e\n\u003cp\u003eThis adapter solves one of the most common connection problems in astrophotography. It allows you to attach a male M48-threaded accessory, like the output of a 2-inch filter wheel or field flattener, directly to a component that requires a male M42 T-thread, such as an off-axis guider or camera body. The adapter itself has female threads on both sides, acting as a converter ring that occupies a minimal 4 mm of optical distance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDesigned for ZWO Pro Camera Systems\u003c\/h3\u003e\n\u003cp\u003eWhile universally useful, this M48-M42 adapter is the same unit included with many ZWO cooled cameras. It's specifically designed to work with other ZWO accessories like the 16.5mm extender or an Off-Axis Guider (OAG). When used in these specific configurations, it provides the correct thread type without altering the designed total back focus of the system, ensuring you can reach the required 55 mm spacing without complex calculations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary use for the ZWO M48-M42 Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts primary function is to convert the larger M48x0.75 female thread, commonly found on 2-inch filter holders and field flatteners, into the smaller M42x0.75 female T-thread used by most astronomy cameras, T-rings, and off-axis guiders. This allows you to connect components that would otherwise be incompatible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow much back focus does the ZWO M48-M42 Adapter use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter itself has an optical path length of \u003cstrong\u003e4 mm\u003c\/strong\u003e. This distance must be factored into your total back focus calculation when adding it to your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this the same adapter that comes with ZWO cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is the same stock M48-M42 adapter ring that is included with many ZWO Pro series cameras. It is offered here as a replacement part or for users who need to adapt other non-ZWO hardware.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ZWO M48-M42 Adapter to connect a 2\" filter wheel to my camera's T-ring?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is a perfect application. If your 2\" filter wheel has a male M48 thread on the camera side, and your camera's T-ring has a male M42 thread, this adapter will bridge the two components securely, consuming only 4 mm of your available back focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this ZWO adapter cause vignetting on my full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBecause this adapter steps down from the larger M48 format to the smaller M42 T-thread, it can introduce vignetting on full-frame (24x36mm) sensors, especially in fast optical systems (f\/5 or lower). The M42 thread has a smaller clear aperture than M48, which can clip the light cone before it reaches the corners of a large sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the threads on the ZWO M48-M42 Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter has female threads on both sides. One side is an M48x0.75 thread, and the other side is an M42x0.75 T-thread.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-M48-M42\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Conversion\u003c\/td\u003e\n\u003ctd\u003eM48x0.75 (Female) to M42x0.75 (Female)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e4 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO M48 to M42 Adapter Ring\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967441563933,"sku":"ZWO-M48-M42","price":17.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-M48-M42-Adapter.jpg?v=1732988275"},{"product_id":"zwo-adapter-2mm-m54m-m48f","title":"ZWO Adapter - 2mm M54(M)\/M48(F)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects M54 Filter Wheels to M48 Cameras\u003c\/li\u003e\n\u003cli\u003eAdds Only 2 mm to Optical Path\u003c\/li\u003e\n\u003cli\u003eMaintains 55 mm Back Focus Standard\u003c\/li\u003e\n\u003cli\u003eKnurled Edge for Secure Grip\u003c\/li\u003e\n\u003cli\u003eDesigned for ZWO 2\" EFW and M54 Filter Drawer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO M54 - M48 Adapter (2mm)\u003c\/h2\u003e\n\u003cp\u003eThe ZWO M54-M48 Adapter steps down the M54 threads on your 2-inch ZWO EFW or M54 filter drawer to the M48 standard for camera connection, adding only 2 mm of thickness to help maintain the critical 55 mm back focus distance required by most correctors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAchieve 55 mm Back Focus with a 2 mm Adapter\u003c\/h3\u003e\n\u003cp\u003eConnecting a camera with M48 threads to ZWO's larger M54 filter wheels presents a spacing challenge. This 2 mm adapter solves it by providing the exact thread conversion needed without consuming significant back focus. Its minimal 2 mm thickness is a deliberate design choice; a thicker adapter could make it impossible to reach the required 55 mm distance when using off-axis guiders or other accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePrecision Fit for ZWO's 2-inch Filter Wheels\u003c\/h3\u003e\n\u003cp\u003eThis adapter is purpose-built for ZWO's ecosystem, ensuring a secure, no-flex fit between the M54 female port on the 2\" EFW or M54 Filter Drawer and the M48 female threads on your camera body. The knurled outer edge gives you a firm grip for easy installation and removal, even in cold weather with gloves on, preventing accidental drops or cross-threading.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the ZWO M54-M48 2mm Adapter used for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter connects a ZWO filter wheel or filter drawer that has a female M54 thread to a camera or accessory that has a female M48 thread. Its primary purpose is to make these components compatible while using only \u003cstrong\u003e2 mm\u003c\/strong\u003e of the optical path, preserving precious back focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich ZWO filter wheels are compatible with this M54-M48 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is specifically designed for ZWO accessories that use the M54 thread standard. This includes the \u003cstrong\u003eZWO 2\" Electronic Filter Wheel (EFW)\u003c\/strong\u003e and the \u003cstrong\u003eZWO M54 Filter Drawer\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have a cooled camera with M48 threads and a ZWO 2\" EFW. Will this adapter let me reach the 55 mm back focus for my refractor's flattener?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this adapter is ideal for that scenario. Its thin \u003cstrong\u003e2 mm\u003c\/strong\u003e profile is specifically designed to be part of a standard \u003cstrong\u003e55 mm\u003c\/strong\u003e back focus imaging train. It allows you to integrate the larger filter wheel with your M48 camera without preventing you from reaching focus with a flattener or reducer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I'm imaging the Andromeda Galaxy (M31) with a full-frame camera, will this ZWO adapter cause vignetting?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The M54 and M48 thread diameters are large enough to fully illuminate full-frame sensors without causing vignetting. This adapter maintains a clear light path, ensuring even illumination from edge to edge when imaging large targets like the Andromeda Galaxy (M31) or the North America Nebula (NGC 7000).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the ZWO M54-M48 adapter only 2 mm thick?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e2 mm\u003c\/strong\u003e thickness is a critical design feature to preserve back focus. Many correctors require a precise 55 mm distance to the sensor. By being extremely thin, this adapter allows you to use a large-format filter wheel in an imaging train that might also include an off-axis guider, rotator, or other accessories that consume back focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install the ZWO M54-M48 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter has male M54 threads and female M48 threads. Simply screw the male M54 side into the camera-side port of your ZWO 2\" EFW or M54 Filter Drawer. Then, screw your M48-threaded camera, extension tube, or off-axis guider into the female M48 side of the adapter. The knurled edge provides a secure grip for hand-tightening.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-M54M-M48F-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFilter Wheel Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMale Thread\u003c\/td\u003e\n\u003ctd\u003eM54 x 0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFemale Thread\u003c\/td\u003e\n\u003ctd\u003eM48 x 0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eZWO 2\" EFW, ZWO M54 Filter Drawer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eZWO - 2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO M54 (Male) to M48 (Female) Adapter - 2mm\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Manufacturer Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967442055453,"sku":"ZWO-M54M-M48F-2","price":17.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-M54M-M48F-2mm-Adapter-1__85158.1596910058.1280.1280.jpg?v=1684342017"},{"product_id":"zwo-oag-l","title":"ZWO OAG-L","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eLarge 12mm x 12mm prism for brighter guide stars\u003c\/li\u003e\n\u003cli\u003eM68, M54, and M48 connection options\u003c\/li\u003e\n\u003cli\u003e17.5mm thickness preserves 55mm backfocus\u003c\/li\u003e\n\u003cli\u003eDesigned for ZWO ASI Mini guide cameras\u003c\/li\u003e\n\u003cli\u003eSupports full-frame and APS-C imaging sensors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO M68 Large Off-Axis Guider (OAG-L)\u003c\/h2\u003e\n\u003cp\u003eThe ZWO OAG-L M68 Off-Axis Guider uses a large 12mm x 12mm prism to intercept more light, improving guiding accuracy for full-frame and APS-C sensors. Its rigid, 17.5mm body maintains the standard 55mm backfocus distance in your imaging train, while the included 5mm thick tilt plate uses M48 threads for a secure connection to your corrector or flattener.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eLarge 12mm x 12mm Prism for Brighter Guide Stars\u003c\/h3\u003e\n\u003cp\u003eThe core of the OAG-L is its oversized 12mm x 12mm prism, which provides a significantly larger surface area to send light to your guide camera. This design delivers a bright, clear view of potential guide stars, even in sparse star fields. With an effective light-passing aperture of 11.7mm x 8.3mm, you can use fainter stars for guiding, resulting in more consistent tracking and sharper final images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eRigid, 17.5mm Profile for Full-Frame Stability\u003c\/h3\u003e\n\u003cp\u003eEngineered for modern imaging trains, the OAG-L adds only 17.5mm of backfocus, making it easy to integrate while maintaining the critical 55mm spacing required by most correctors. ZWO removed internal threads in favor of a direct, bolt-on connection between the OAG, filter wheel, and camera, creating a solid, flexure-free imaging stack. This rigidity is critical when using full-frame sensors like the ASI6200, ensuring no tilt or sag ruins long exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eZWO OAG-L vs. Previous M68 OAG\u003c\/h3\u003e\n\u003cp\u003eThe primary advantage of the OAG-L is its larger 12mm x 12mm prism. This upgrade allows it to gather significantly more light than the previous generation M68 OAG, directly improving the signal-to-noise ratio at the guide camera. This makes finding and locking onto guide stars easier and more reliable, especially with longer focal length telescopes where the field of view is narrow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eHelical Focuser for ZWO ASI Mini Cameras\u003c\/h3\u003e\n\u003cp\u003eThis off-axis guider is specifically designed for ZWO's ASI Mini guide cameras, such as the ASI174MM Mini or ASI220MM Mini. A precise helical focuser allows you to perfectly match the focus of your guide camera to your main imaging camera. Once you achieve focus during the day on a distant object, you can lock it down, ensuring both your main camera and guider reach focus simultaneously under the stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich guide cameras are compatible with the ZWO OAG-L?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO OAG-L is designed exclusively for use with ZWO ASI Mini series guide cameras. This includes popular models like the \u003cstrong\u003eASI174MM Mini\u003c\/strong\u003e, \u003cstrong\u003eASI220MM Mini\u003c\/strong\u003e, and \u003cstrong\u003eASI120MM Mini\u003c\/strong\u003e. It is not compatible with standard 1.25\" barrel cameras or non-mini ZWO cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the ZWO OAG-L cause vignetting with my full-frame camera like the ASI6200?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The ZWO OAG-L is designed with a large clear aperture to fully support full-frame sensors without vignetting, provided the prism is positioned correctly. For full-frame cameras like the ASI6200 or ASI2600, you should position the prism so it does not physically obstruct the main imaging sensor's light path.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the OAG-L improve guiding over a separate guide scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn off-axis guider eliminates differential flexure, which is the tiny amount of mechanical sag or bending that occurs between a main telescope and a separate guide scope. By using the same light path for both imaging and guiding, the OAG-L ensures the guide camera sees the exact same movement the main camera does, leading to more accurate guiding corrections and sharper stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the backfocus consumption of the ZWO OAG-L?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe main body of the ZWO OAG-L consumes \u003cstrong\u003e17.5mm\u003c\/strong\u003e of backfocus. This allows it to fit comfortably within the standard 55mm backfocus distance when paired with a ZWO filter wheel and camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach the ZWO OAG-L to my telescope and camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO OAG-L bolts directly to a ZWO 2\" or 36mm filter wheel, which then bolts to the camera. On the telescope side, it includes an M48 tilt adapter for connecting to most field flatteners or correctors. Optional M54 and M68 tilt adapters are also available for different thread standards.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ZWO OAG-L a good choice for a fast Newtonian telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, but with a consideration. In very fast optical systems (f\/4 or faster), the OAG's prism can cast a slight shadow on the main imaging sensor if it's lowered too far into the light path. You must find the optimal balance between prism height for bright guide stars and minimizing any potential obstruction of the main sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU Number\u003c\/td\u003e\n\u003ctd\u003eZWO-OAG-L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPN\u003c\/td\u003e\n\u003ctd\u003eZWO OAG-L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eZWO - 2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM68 Large Off-Axis Guider\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM48 Sensor Tilt Plate (5mm)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967442088221,"sku":"ZWO-OAG-L","price":279.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-OAG-L-1__61693.1648571086.1280.1280.jpg?v=1684342019"},{"product_id":"zwo-m68-sensor-tilt-plate","title":"ZWO M68 Sensor Tilt Plate","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCorrects sensor tilt for sharp, round stars across the entire frame\u003c\/li\u003e\n\u003cli\u003eAdds a minimal 5 mm of optical path length to the imaging train\u003c\/li\u003e\n\u003cli\u003eConnects M68 (Side A) accessories to M64 (Side B) camera bodies\u003c\/li\u003e\n\u003cli\u003eEngineered specifically for ZWO ASI6200 full-frame cameras\u003c\/li\u003e\n\u003cli\u003eEnables precise collimation of the sensor plane with push-pull adjustment screws\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO M68 Sensor Tilt Adapter for 6200MC\/MM Pro Cameras\u003c\/h2\u003e\n\u003cp\u003eThe ZWO M68 Sensor Tilt Adapter is the definitive solution for achieving a perfectly flat field with full-frame cameras, connecting M68 threaded accessories to an M64 camera body like the ASI6200 series. This plate adds only 5 mm of optical path length, providing the fine adjustment needed to eliminate elongated stars in the corners of your images without disrupting critical back focus spacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAchieve Perfect Corners with 5 mm of Adjustment\u003c\/h3\u003e\n\u003cp\u003eSensor tilt—a slight misalignment of the sensor plane relative to the telescope's optical axis—is a common issue with fast optical systems, resulting in misshapen stars in one or more corners. This 5 mm thick adapter allows you to make precise, independent adjustments to the sensor's orientation, ensuring the entire focal plane is perfectly perpendicular to incoming light. The result is a uniformly sharp field from edge to edge, a critical step for professional-grade astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eM68 to M64 Connection for ZWO Full-Frame Systems\u003c\/h3\u003e\n\u003cp\u003eEngineered for the ZWO ecosystem, this adapter provides a robust M68x1 female thread on the telescope side (Side A) and an M64x0.75 female thread on the camera side (Side B). This specific configuration is designed to integrate seamlessly with the ZWO ASI6200MC Pro and ASI6200MM Pro cameras, allowing you to attach M68 accessories like off-axis guiders and filter wheels directly to your full-frame camera body.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eComplete Your 55 mm Back Focus Imaging Train\u003c\/h3\u003e\n\u003cp\u003eFor many flatteners and reducers, achieving the standard 55 mm back focus distance is essential for optimal correction. The ZWO M68 Sensor Tilt Adapter's precise 5 mm thickness is designed to be the final component in a common ZWO full-frame imaging train. When combined with other ZWO M68 accessories, this adapter completes the optical path to 55 mm, satisfying the requirements of your corrector while also providing the necessary tilt adjustment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat cameras is the ZWO M68 Sensor Tilt Adapter designed for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is specifically designed for ZWO's full-frame cooled cameras that feature an M64 thread, primarily the \u003cstrong\u003eZWO ASI6200MC Pro\u003c\/strong\u003e and \u003cstrong\u003eASI6200MM Pro\u003c\/strong\u003e models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know if I need the ZWO M68 Sensor Tilt Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIf your astrophotos show sharp stars in the center but elongated or out-of-focus stars in one or more corners, you likely have sensor tilt. This issue is most prominent in \"fast\" optical systems (f\/5 or lower) and with large full-frame sensors. This adapter provides the physical adjustment mechanism to correct that tilt.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMy stars are sharp on one side but stretched on the other with my ASI6200 and f\/4 Newtonian. Will the ZWO M68 plate fix this?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, that is a classic symptom of sensor tilt. An f\/4 system has a very shallow depth of focus, making even minor tilt obvious. The ZWO M68 Sensor Tilt Adapter is the correct tool to resolve this by allowing you to make micro-adjustments to square the ASI6200's sensor to the focal plane of your Newtonian.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow much back focus does the ZWO M68 Sensor Tilt Adapter use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter itself consumes exactly \u003cstrong\u003e5 mm\u003c\/strong\u003e of back focus or optical path length. Its slim profile allows it to be inserted into most imaging trains without preventing you from reaching your target back focus distance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I integrate the ZWO M68 tilt plate to achieve 55mm of back focus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe plate's 5 mm thickness is designed to be the final component in a standard 55 mm imaging train. A typical ZWO full-frame setup would be arranged as follows:\u003cbr\u003e\u003cstrong\u003eTelescope Side → M68 OAG → 2\" EFW → M68 Tilt Plate (5 mm) → ASI6200 Camera → Camera Side\u003c\/strong\u003e.\u003cbr\u003eThis combination correctly spaces the camera sensor for most field flatteners and reducers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the thread sizes on the ZWO M68 Sensor Tilt Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt features an \u003cstrong\u003eM68x1 female thread\u003c\/strong\u003e on Side A (typically facing the telescope or filter wheel) and an \u003cstrong\u003eM64x0.75 female thread\u003c\/strong\u003e on Side B (facing the camera).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-M68-PLATE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Connector (Side A)\u003c\/td\u003e\n\u003ctd\u003eM68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Connector (Side B)\u003c\/td\u003e\n\u003ctd\u003eM64\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Path Length\u003c\/td\u003e\n\u003ctd\u003e5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eZWO ASI6200MC\/MM Pro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM68 Sensor Tilt Adapter for 6200MC\/MM Pro Cameras\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967442415901,"sku":"ZWO-M68-Plate","price":41.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-M68-Sensor-Tilt-Plate-1__29520.1596910058.1280.1280.jpg?v=1684342040"},{"product_id":"zwo-narrowband-filter-set-7nm-h-alpha-oiii-sii","title":"ZWO Narrowband Filter Set - 7nm H-alpha, OIII \u0026 SII","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eIncludes 1.25\" H-alpha, OIII, and SII filters\u003c\/li\u003e\n\u003cli\u003e7nm bandpass for high-contrast imaging\u003c\/li\u003e\n\u003cli\u003eIdeal for creating \"Hubble Palette\" images\u003c\/li\u003e\n\u003cli\u003eFine-optically polished to 1\/4 wave accuracy\u003c\/li\u003e\n\u003cli\u003eUp to 80% light transmission\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO 1.25\" Narrowband Filter Set - 7nm H-alpha, OIII \u0026amp; SII\u003c\/h2\u003e\n\u003cp\u003eThe ZWO 1.25\" Narrowband Filter Set isolates the three most critical emission lines for deep-sky astrophotography with a tight 7nm bandpass. This set includes filters for Hydrogen-alpha (H-a) at 656nm, doubly-ionized Oxygen (OIII) at 500nm, and singly-ionized Sulfur (SII) at 672nm. Each filter is fine-optically polished to 1\/4 wave accuracy and features multi-layer anti-reflection coatings to achieve up to 80% light transmission, ensuring maximum signal reaches your monochrome camera sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIsolating Nebulosity with a 7nm Bandpass\u003c\/h3\u003e\n\u003cp\u003eA 7nm bandpass is the key to high-contrast nebula imaging, especially from light-polluted locations. By transmitting only a razor-thin slice of the spectrum around the target emission line, these filters reject broadband light from streetlights, moonlight, and the general skyglow background. The result is a dramatic increase in contrast, revealing faint, intricate structures in emission nebulae like the Veil Nebula (NGC 6960) or the Heart Nebula (IC 1805) that would be invisible in a standard LRGB image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCreate Hubble Palette Images with 656nm, 500nm, and 672nm Filters\u003c\/h3\u003e\n\u003cp\u003eThis specific combination of H-a, OIII, and SII filters is the foundation of the iconic \"Hubble Palette.\" By mapping the data from each filter to a different color channel (typically SII to red, H-a to green, and OIII to blue), you can create vibrant, scientifically informative images that reveal the chemical composition of a nebula. The 672nm SII filter traces the coolest ionized gas, the 656nm H-a filter captures the most abundant hydrogen, and the 500nm OIII filter highlights the hottest, most energetic regions, giving your images incredible depth and color separation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOptical Precision: 1\/4 Wave Polish and 80% Transmission\u003c\/h3\u003e\n\u003cp\u003eImage quality is maintained by polishing each filter to a 1\/4 wave standard, ensuring the wavefront from your telescope's optics passes through without distortion, preserving star sharpness. With light transmission peaking at 80% within the narrow 7nm bandpass, the filters capture a strong signal from nebulae without requiring excessively long sub-exposure times. This balance makes the ZWO 7nm set a highly efficient choice for capturing deep-sky data.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eZWO 7nm vs. Tighter 3nm Bandpass Filters\u003c\/h3\u003e\n\u003cp\u003eWhen choosing narrowband filters, a common question is the ideal bandpass. While more expensive 3nm filters offer slightly higher contrast and even better rejection of light pollution, the ZWO 7nm filters present a more practical starting point for many imagers.\n\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eExposure Time:\u003c\/strong\u003e The 7nm bandpass allows more light through, enabling shorter sub-exposures to achieve a comparable signal-to-noise ratio. This is a significant advantage for those with entry-level mounts or limited imaging time.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSystem Compatibility:\u003c\/strong\u003e Tighter filters can sometimes introduce artifacts or be less effective with very fast optical systems (f\/4 and below) without careful setup. The 7nm bandpass is more forgiving across a wider range of telescope focal ratios.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCost-Effectiveness:\u003c\/strong\u003e For imagers moving from LRGB or one-shot color, the 7nm set delivers the vast majority of the benefits of narrowband imaging at a more accessible price point.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ZWO 7nm Narrowband filter set with a color camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNarrowband filters are designed for \u003cstrong\u003emonochrome cameras\u003c\/strong\u003e. A color camera has a Bayer matrix (a grid of red, green, and blue filters) over its sensor. Using a narrowband filter, like H-alpha which is deep red, would only allow light to pass through the red pixels, wasting the signal from the green and blue pixels and resulting in a very inefficient, low-resolution image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the ZWO 7nm filters perform on the Orion Nebula (M42) from my backyard?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO 7nm filters will perform exceptionally well. M42 is extremely bright in both H-alpha and OIII. From a light-polluted backyard, these filters will darken the sky background significantly, allowing you to use longer exposures to capture the faint outer structures of the nebula without washing out the core. You will be able to resolve the intricate details within the Trapezium region with far more contrast than with standard LRGB filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the best deep-sky objects for this ZWO narrowband filter set?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis set is ideal for \u003cstrong\u003eemission nebulae\u003c\/strong\u003e, which are clouds of ionized gas. Excellent targets include:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNorth America Nebula (NGC 7000):\u003c\/strong\u003e Rich in H-alpha and SII.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVeil Nebula Complex (NGC 6960\/6992):\u003c\/strong\u003e A supernova remnant that glows brightly in H-alpha and OIII.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEagle Nebula (M16):\u003c\/strong\u003e Famous for the \"Pillars of Creation,\" which are stunning in the Hubble Palette.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeart and Soul Nebulae (IC 1805 \u0026amp; IC 1848):\u003c\/strong\u003e Large complexes that are perfect for wider-field scopes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eGalaxies and reflection nebulae are not good targets for these filters as they emit broadband light.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a filter wheel to use the ZWO 1.25\" filter set?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA filter wheel is the most convenient way to automate switching between the H-a, OIII, and SII filters during an imaging session. However, it is not strictly necessary. You can also use a manual filter drawer or a filter slider, which allows you to swap the 1.25\" threaded filters by hand between exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the \"Hubble Palette\" and how do I create it with these ZWO filters?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Hubble Palette, also known as \"SHO,\" is a color mapping technique used to visualize the different gases in a nebula. After capturing separate images with each of the ZWO filters, you combine them in post-processing software like PixInsight or Photoshop. The standard mapping is:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eS-II Data → Red Channel\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eH-a Data → Green Channel\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eO-III Data → Blue Channel\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis creates the iconic gold-and-teal aesthetic seen in many images from the Hubble Space Telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy would I choose this ZWO 7nm set over a more expensive 3nm set?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile 3nm filters offer the highest possible contrast, the 7nm set is often a better choice for practicality. The ZWO 7nm filters allow more light through, which means \u003cstrong\u003eshorter exposure times\u003c\/strong\u003e are needed to get a good signal. This is a major benefit if you have tracking limitations or less-than-perfect seeing conditions. They are also more affordable, providing an excellent entry into serious narrowband imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-NB7NMD1.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFilter Set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Class\u003c\/td\u003e\n\u003ctd\u003eNarrowband\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e31.75mm (1.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShape\u003c\/td\u003e\n\u003ctd\u003eRound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Style\u003c\/td\u003e\n\u003ctd\u003eThreaded Cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandwidth\u003c\/td\u003e\n\u003ctd\u003e7 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Mounted H-a 7nm Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Mounted OIII 7nm Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Mounted SII 7nm Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"1.25\" Round Mounted","offer_id":44967443366173,"sku":"ZWO-NB7nm1.25","price":517.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Round Mounted","offer_id":44967443398941,"sku":"ZWO-NB7nm2","price":979.0,"currency_code":"CAD","in_stock":true},{"title":"36mm Round Unmounted","offer_id":44967443464477,"sku":"ZWO-NB7nmD36","price":671.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO-Narrowband-Filter-Set-1-25-inch__67133.1596920829.1280.1280.jpg?v=1684342071"},{"product_id":"zwo-narrowband-h-alpha-filter-7nm","title":"ZWO Narrowband H-alpha Filter - 7nm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eIsolates Hydrogen-Alpha light at a 7nm bandpass\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" threaded metal cell\u003c\/li\u003e\n\u003cli\u003eBlocks light pollution and moonlight for extreme contrast\u003c\/li\u003e\n\u003cli\u003eMulti-layer anti-reflection coatings\u003c\/li\u003e\n\u003cli\u003eFine-optically polished to 1\/4 wave accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO H-Alpha 7nm CCD Filter - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe ZWO H-Alpha 7nm CCD Filter isolates the most important emission line in astrophotography within a tight 7nm bandpass, designed for standard 1.25\" filter wheels and camera nosepieces. This single-filter solution provides the highest contrast on emission nebulae for monochrome imaging setups and is protected by a 2-year warranty.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIsolating Nebulae with a 7nm Bandpass\u003c\/h3\u003e\n\u003cp\u003eBy passing only a 7nm window of light centered on the 656nm Hydrogen-alpha wavelength, this ZWO filter creates a near-black sky background. This surgical isolation dramatically increases the contrast of emission nebulae like the Orion Nebula (M42) or the North American Nebula (NGC 7000), making their faint structures visible even under severe moonlight or urban light pollution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOptical Precision at 1\/4 Wave\u003c\/h3\u003e\n\u003cp\u003eEach ZWO narrowband filter is fine-optically polished to a 1\/4 wave accuracy, ensuring that the filter itself does not degrade the sharpness of your optical train. Multi-layer anti-reflection coatings are applied to further suppress internal reflections, which prevents the halos and ghosting around bright stars that can compromise lesser filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eZWO 7nm vs. 3nm H-alpha Filters\u003c\/h3\u003e\n\u003cp\u003eChoosing a bandpass involves a direct trade-off between signal strength and contrast. While a 3nm filter provides the absolute highest contrast and rejection of light pollution, the ZWO 7nm filter captures more than twice the photons in the same exposure time. This makes the 7nm filter a more balanced choice for a wider range of targets and conditions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eZWO 3nm H-alpha:\u003c\/strong\u003e Offers maximum contrast for extremely light-polluted skies or for resolving the finest filamentary details in bright nebulae like the Veil Nebula. Requires longer sub-exposure times.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZWO 7nm H-alpha:\u003c\/strong\u003e Gathers signal faster, making it better suited for fainter nebulae, faster optical systems (f\/4-f\/7), or when you have limited imaging time. It still provides excellent contrast, far exceeding broadband filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCompatibility with Any 1.25\" System\u003c\/h3\u003e\n\u003cp\u003eThe filter is mounted in a durable, threaded metal cell that conforms to the standard 1.25\" filter format. This ensures it will thread directly into any 1.25\" filter wheel, manual filter drawer, or camera nosepiece that accepts filters, providing a secure, tilt-free fit in your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the ZWO H-alpha 7nm filter used for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO H-alpha 7nm filter is designed for astrophotography with monochrome cameras. It isolates the specific wavelength of light emitted by ionized hydrogen (656nm), which is prevalent in star-forming regions and emission nebulae. This dramatically increases contrast and allows you to capture detailed images of nebulae, even from light-polluted locations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ZWO H-alpha 7nm filter with a color camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile you can, it's not ideal. A narrowband filter like this blocks almost all light except for a thin 7nm slice of deep red. A color camera's Bayer matrix has red, green, and blue pixels, so the green and blue pixels will receive no signal. You will get a monochrome red image with only 1\/4 of the camera's resolution. For color cameras, a multi-bandpass filter like the ZWO Duo-Band is a much more effective choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy choose a 7nm filter over a tighter 3nm ZWO filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 7nm bandpass is a trade-off. It allows more light to reach the sensor than a 3nm filter, resulting in shorter exposure times to achieve the same signal level. This makes the 7nm filter more forgiving and efficient, especially on fainter objects or with slower telescopes. A 3nm filter offers higher contrast but requires significantly longer exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ZWO 7nm H-alpha filter perform on the Orion Nebula (M42) from the city?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt performs exceptionally well. The 7nm bandpass will reject the vast majority of urban light pollution (which is primarily broadband), darkening the sky background significantly. This will make the faint outer loops of M42 stand out clearly while preventing the bright core of the Trapezium from being completely blown out, allowing you to capture a much higher dynamic range image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat exposure times can I expect for the Cygnus Wall in NGC 7000 with this 7nm filter and an f\/5 refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a typical monochrome CMOS camera (like a ZWO ASI294MM Pro) on an f\/5 refractor, you can expect to get a strong signal on the Cygnus Wall region of the North American Nebula (NGC 7000) with sub-exposures of 180 to 300 seconds. The 7nm bandpass allows for reasonably short exposures while still providing excellent contrast against the skyglow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this ZWO filter for viewing the Sun?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eAbsolutely not.\u003c\/strong\u003e This is an imaging filter for night-sky objects only. It is not a solar filter and provides no protection from harmful UV or infrared radiation. Attempting to view the sun with this filter will cause immediate and permanent eye damage and will destroy your camera sensor. Always use a certified solar filter that covers the entire front of your telescope for any solar observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU Number\u003c\/td\u003e\n\u003ctd\u003eZWO-Ha7NM1.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eH-Alpha\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Size\u003c\/td\u003e\n\u003ctd\u003e31.75mm (1.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandwidth\u003c\/td\u003e\n\u003ctd\u003e7 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Format\u003c\/td\u003e\n\u003ctd\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShape\u003c\/td\u003e\n\u003ctd\u003eRound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Style\u003c\/td\u003e\n\u003ctd\u003eThreaded Cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Mounted H-Alpha 7nm Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eProtective Plastic Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload ZWO Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"1.25\" Round Mounted","offer_id":44967443562781,"sku":"ZWO-Ha7nm1.25","price":181.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Round Mounted","offer_id":44967443595549,"sku":"ZWO-Ha7nm2","price":349.0,"currency_code":"CAD","in_stock":true},{"title":"36mm Round Unmounted","offer_id":44967443661085,"sku":"ZWO-Ha7nmD36","price":237.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO-H-alpha-Filter-1-25-inch__66275.1596920478.1280.1280.jpg?v=1684342084"},{"product_id":"zwo-narrowband-oiii-filter-7nm","title":"ZWO Narrowband OIII Filter - 7nm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e7nm Bandpass at OIII Emission Line\u003c\/li\u003e\n\u003cli\u003eIsolates Planetary Nebulae and Supernova Remnants\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" Threaded Filter Cell\u003c\/li\u003e\n\u003cli\u003e1\/4 Wave Optical Substrate Accuracy\u003c\/li\u003e\n\u003cli\u003eMulti-Layer Anti-Reflection Coatings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO OIII 7nm Narrowband Filter - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe ZWO OIII 7nm 1.25\" Filter isolates the critical doubly-ionized oxygen emission line with a precise 7nm bandpass, dramatically increasing contrast on key deep-sky targets. Mounted in a standard 31.75mm threaded cell, its glass substrate is polished to an accuracy of 1\/4 wave to preserve the fine details resolved by your telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eTargeting Emission Nebulae with a 7nm Bandpass\u003c\/h3\u003e\n\u003cp\u003eMost of the light from planetary nebulae and supernova remnants is emitted in the OIII line near 500nm. This ZWO filter uses a 7nm bandpass to reject broadband light pollution from city skies and unwanted starlight, making faint structures like the Veil Nebula (NGC 6960) or the Dumbbell Nebula (M27) stand out against a dark background. The 7nm window is wide enough to be effective with faster optical systems while still delivering a significant contrast boost.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e1\/4 Wave Optics for High-Resolution Imaging\u003c\/h3\u003e\n\u003cp\u003eA filter should only transmit light, not distort it. ZWO's narrowband filters are built on a fine-optically polished substrate with 1\/4 wave accuracy, ensuring the filter does not degrade the sharpness of your optical train. Multi-layer anti-reflection coatings maximize light transmission at the OIII wavelength and suppress internal reflections that can cause halos around bright stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBuilding the Hubble Palette with a 1.25\" Filter\u003c\/h3\u003e\n\u003cp\u003eThe OIII filter is an essential component for creating tri-color \"Hubble Palette\" images when combined with H-alpha and SII filters. The standard 1.25\" (31.75mm) threaded cell is compatible with most astronomy cameras and filter wheels designed for smaller format sensors. While ideal for many setups, be aware that 1.25\" filters may introduce vignetting on cameras with APS-C or larger sensors, especially in fast f-ratio telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat types of objects are best for the ZWO OIII 7nm filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis filter excels at isolating structures in emission nebulae that are rich in doubly-ionized oxygen. Prime targets include \u003cstrong\u003eplanetary nebulae\u003c\/strong\u003e like the Ring Nebula (M57) and the Dumbbell Nebula (M27), and \u003cstrong\u003esupernova remnants\u003c\/strong\u003e such as the Veil Nebula (NGC 6960) and the Crab Nebula (M1).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 7nm bandpass on the ZWO OIII filter compare to a 3nm or 5nm filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA \u003cstrong\u003e7nm bandpass\u003c\/strong\u003e offers a great balance between performance and flexibility. It provides a major contrast boost over a broadband filter but is more forgiving with faster focal ratio telescopes and allows for slightly shorter exposure times than tighter filters. A 3nm or 5nm filter will reject more light pollution and provide higher contrast on faint details, but typically requires longer exposures and performs best with slower optical systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 1.25\" ZWO OIII filter work with my full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt is not recommended. While the 1.25\" filter will thread into compatible nosepieces, it is too small to fully illuminate a full-frame sensor (or even most APS-C sensors) without significant vignetting, which appears as a darkening of the corners of the image. For larger sensors, a 2\" or larger filter is required to achieve an evenly illuminated field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen imaging the Veil Nebula (NGC 6960) with an 8\" SCT, is this ZWO OIII filter a good choice?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it's an excellent choice. The Veil Nebula is extremely rich in OIII emission, and this filter will make its delicate, filamentary structure pop against the sky background. An 8\" SCT at f\/10 or f\/6.3 provides an ideal focal ratio for the 7nm bandpass, allowing you to capture high-contrast details in this classic supernova remnant.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ZWO OIII 7nm filter for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, narrowband filters can be used visually with great effect, especially on planetary nebulae. By threading the 1.25\" filter onto your eyepiece, you can dramatically increase the contrast of objects like the Ring Nebula (M57), often making it visible from suburban skies where it would otherwise be washed out.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I create a \"Hubble Palette\" image with this ZWO OIII filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo create a Hubble Palette (SHO) image, you need to capture data through three different narrowband filters:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSulfur-II (SII):\u003c\/strong\u003e This data is typically mapped to the Red channel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydrogen-alpha (H-alpha):\u003c\/strong\u003e This data is mapped to the Green channel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOxygen-III (OIII):\u003c\/strong\u003e This ZWO filter provides data for the Blue channel.\u003c\/li\u003e\n\u003c\/ul\u003e\nBy combining these three monochrome images in processing software, you create a false-color result that reveals intricate details and structure within the nebula.\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-OIII7NM1.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eOIII (Oxygen-III) Narrowband\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003ctd\u003e7 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e1.25\" (31.75mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eThreaded Cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShape\u003c\/td\u003e\n\u003ctd\u003eRound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO 1.25\" Mounted OIII 7nm Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eProtective Plastic Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"1.25\" Round Mounted","offer_id":44967443726621,"sku":"ZWO-OIII7nm1.25","price":181.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Round Mounted","offer_id":44967443759389,"sku":"ZWO-OIII7nm2","price":349.0,"currency_code":"CAD","in_stock":true},{"title":"36mm Round Unmounted","offer_id":44967443824925,"sku":"ZWO-OIII7nmD36","price":237.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO-OIII-Filter-1-25-inch__00574.1596920412.1280.1280.jpg?v=1684342099"},{"product_id":"zwo-narrowband-sii-filter-7nm","title":"ZWO Narrowband SII Filter - 7nm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eIsolates the 672nm Sulfur-II emission line\u003c\/li\u003e\n\u003cli\u003e7nm bandpass for high-contrast imaging\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" threaded metal cell\u003c\/li\u003e\n\u003cli\u003e1\/4 wave polished substrate with multi-layer coatings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO SII 7nm 1.25\" Narrowband Filter\u003c\/h2\u003e\n\u003cp\u003eThe ZWO SII 7nm 1.25\" Filter isolates the deep-red Sulfur-II emission line centered at 672nm, a critical wavelength for mapping ionized structure in emission nebulae. Its tight 7nm bandpass dramatically increases contrast by rejecting light pollution and moonlight, while the 1\/4 wave polished substrate ensures that the finest details are not lost to optical imperfections.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIsolating Deep-Red Structure with a 7nm Bandpass\u003c\/h3\u003e\n\u003cp\u003eBy restricting transmission to a narrow 7nm window around the 672nm SII line, this filter renders the sky background nearly black, causing faint nebulosity to stand out with striking clarity. This high signal-to-noise ratio is essential for revealing the delicate, wispy structures in supernova remnants like the Veil Nebula (NGC 6960) or the intricate star-forming regions within the Eagle Nebula (M16).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e1\/4 Wave Optics for High-Fidelity Imaging\u003c\/h3\u003e\n\u003cp\u003eEach ZWO narrowband filter is ground and polished to a 1\/4 wave surface accuracy, a specification that prevents distortion and maintains image sharpness across the field. Multiple layers of anti-reflection coatings are then applied to eliminate halos around bright stars and maximize light transmission within the 7nm bandpass, preserving the critical signal from your target.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBuilding the Hubble Palette with the 1.25\" ZWO SII Filter\u003c\/h3\u003e\n\u003cp\u003eThis filter is the essential \"S\" component in the SHO color palette, made famous by images from the Hubble Space Telescope. When you combine data captured through this SII filter with separate exposures using Hydrogen-alpha and Oxygen-III filters, you can create stunning, scientifically valuable images that map the chemical composition of nebulae in vibrant gold, cyan, and blue hues. The standard 1.25\" threaded cell ensures compatibility with most filter wheels and camera nosepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary purpose of the ZWO 7nm SII filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO 7nm SII filter is a narrowband filter designed for astrophotography with monochrome cameras. It isolates the 672nm wavelength of light emitted by ionized sulfur, which is crucial for capturing specific structural details in emission nebulae and creating \"Hubble Palette\" (SHO) images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ZWO 7nm SII filter with a color camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile technically possible, it is not recommended. Color cameras have a Bayer matrix (RGB filters) over their sensors, and only the red pixels will receive signal from the 672nm SII line. This results in a significant loss of signal and resolution, making a monochrome camera the superior choice for narrowband imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ZWO 7nm SII filter perform on the Rosette Nebula (NGC 2244) with a monochrome camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOn a target like the Rosette Nebula, the ZWO 7nm SII filter excels at revealing the shock fronts and ionization structures that are less prominent in Hydrogen-alpha. It isolates the outer shell and filamentary details, providing the essential \"S\" channel data that adds depth and a golden hue to a final SHO composite image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat exposure times should I expect for the ZWO 7nm SII filter with an 8\" f\/4 Newtonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a fast f\/4 system, you can typically start with exposures of 300 to 600 seconds per sub-frame from a moderately light-polluted (Bortle 4-5) site. Sulfur-II is often the faintest of the three main narrowband channels (Ha, OIII, SII), so you may need to expose 1.5x to 2x longer for SII than you do for Hydrogen-alpha to achieve a comparable signal level.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is a 7nm bandpass important for the ZWO SII filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA narrower bandpass is more effective at rejecting unwanted light, such as from city glow, moonlight, and natural skyglow. The \u003cstrong\u003e7nm\u003c\/strong\u003e bandpass provides a very high-contrast view by darkening the sky background significantly, making it superior to wider 12nm or 15nm filters, especially from suburban locations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the ZWO 7nm SII filter thread into a standard 1.25\" filter wheel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The ZWO 7nm SII filter is mounted in a standard 1.25\" metal cell with M28.5x0.6 threads. It is fully compatible with any 1.25\" filter wheel, filter drawer, or accessory that accepts standard 1.25\" threaded filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-SII7NM1.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eSulfur-II (SII) Narrowband\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandwidth\u003c\/td\u003e\n\u003ctd\u003e7 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e31.75mm (1.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Style\u003c\/td\u003e\n\u003ctd\u003eThreaded Cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShape\u003c\/td\u003e\n\u003ctd\u003eRound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCategory\u003c\/td\u003e\n\u003ctd\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Mounted Sulfur II 7nm Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eProtective Plastic Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"1.25\" Round Mounted","offer_id":44967443857693,"sku":"ZWO-SII7nm1.25","price":181.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Round Mounted","offer_id":44967443890461,"sku":"ZWO-SII7nm2","price":349.0,"currency_code":"CAD","in_stock":true},{"title":"36mm Round Unmounted","offer_id":44967443955997,"sku":"ZWO-SII7nmD36","price":237.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ZWO-SII-Filter-1-25-inch__61822.1596920329.1280.1280.jpg?v=1684342114"},{"product_id":"zwo-oag","title":"ZWO OAG","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eEliminates Differential Flexure\u003c\/li\u003e\n\u003cli\u003eReduces Overall System Weight\u003c\/li\u003e\n\u003cli\u003eIncludes 1.25\" Guide Camera Holder\u003c\/li\u003e\n\u003cli\u003e5mm T2 Extender for Spacing Adjustment\u003c\/li\u003e\n\u003cli\u003eM42 and M48 Adapters Included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO OAG Off-Axis Guider\u003c\/h2\u003e\n\u003cp\u003eThe ZWO OAG integrates guiding directly into your main optical path using an included 1.25” holder for your guide camera. It ships with a 5mm T2 extender and multiple adapters to solve critical spacing and connection challenges, effectively eliminating the differential flexure that can plague separate guidescope setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eEnd Differential Flexure with a 1.25\" Integrated Guider\u003c\/h3\u003e\n\u003cp\u003eThe ZWO OAG solves the most persistent problem in long-exposure astrophotography: differential flexure. By using a prism to pick off a small portion of the light from your main telescope's imaging cone, it ensures your guide camera and imaging camera see the exact same minute movements. Any tube flexure, mirror flop, or mount shift is seen by both cameras simultaneously, resulting in perfectly round stars even at long focal lengths.\u003c\/p\u003e\n\u003cp\u003eThis design makes a separate, heavy guidescope unnecessary, reducing the overall weight and complexity of your rig. The OAG includes a standard 1.25” holder, making it compatible with a wide range of popular autoguiding cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFine-Tune Focus with the Included 5mm T2 Extender\u003c\/h3\u003e\n\u003cp\u003eAchieving simultaneous focus between your main imager and guide camera is critical. The ZWO OAG kit includes a versatile set of adapters to manage the precise spacing required. The package contains M42 and M48 adapters for direct connection to most ZWO cameras, filter wheels, and telescope focusers. \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5mm T2 Extender:\u003c\/strong\u003e This crucial spacer helps adjust the distance between the OAG and your main camera, providing the mechanical back focus needed to bring the guide camera into focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdapter Suite:\u003c\/strong\u003e With included M42, M48, and M48-M42 adapters, you have the flexibility to connect to nearly any imaging train configuration right out of the box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eZWO OAG vs. Traditional 50mm Guidescopes\u003c\/h3\u003e\n\u003cp\u003eWhile a 50mm guidescope offers a wider field of view for finding a guide star, the OAG provides superior guiding accuracy where it matters most.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero Flexure:\u003c\/strong\u003e The ZWO OAG physically eliminates differential flexure, a mechanical problem that guiding software cannot correct. This is the single largest source of elongated stars in systems using a separate guidescope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Weight and Better Balance:\u003c\/strong\u003e By removing the guidescope, mounting rings, and dovetail bar, you reduce the payload on your mount. This improves tracking and allows the mount to perform more efficiently.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Focal Length Precision:\u003c\/strong\u003e For Schmidt-Cassegrains and Ritchey-Chrétiens, the OAG guides at the same image scale as your main camera. This allows for far more precise corrections than a short focal length guidescope can deliver, leading to fundamentally sharper images.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy should I use the ZWO OAG instead of a guidescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary reason is to \u003cstrong\u003eeliminate differential flexure\u003c\/strong\u003e. This is any small mechanical shift between your main telescope and your guidescope that causes trailing stars, even with perfect guiding. The ZWO OAG uses one optical path for both cameras, making this problem impossible. It also reduces the weight and complexity of your setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the ZWO OAG work with my Celestron EdgeHD 8\" and an ASI533MC Pro camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an excellent combination. Long focal length systems like the EdgeHD 8\" are the most susceptible to differential flexure, making the ZWO OAG the ideal guiding solution. The included M42 and M48 adapters will allow you to connect the OAG to your camera and the telescope's reducer or focuser.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I focus the guide camera with the ZWO OAG?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFirst, achieve sharp focus with your main imaging camera. Then, loosen the thumbscrew on the 1.25\" holder and slide your guide camera up or down until the stars in your guiding software are also sharp. The goal is to make the distance from the prism to the guide sensor equal to the distance from the prism to the main imaging sensor. The included 5mm T2 extender can be used to adjust the main camera's position to help achieve this.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm imaging the Pelican Nebula (IC 5070). Will I have trouble finding a guide star?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Pelican Nebula is in a dense region of the Milky Way, so finding a guide star with the ZWO OAG should be straightforward. The main trade-off of an OAG is a smaller field of view for finding stars compared to a guidescope. In star-poor regions, you may need to rotate your camera to place a suitable guide star onto the prism, but for most deep-sky targets, this is not an issue.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat adapters come included with the ZWO OAG?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO OAG comes with a comprehensive set of adapters to fit most imaging trains. Included are an \u003cstrong\u003eM48 adapter\u003c\/strong\u003e for 2\" filter threads, an \u003cstrong\u003eM42 adapter\u003c\/strong\u003e for T-threads, and an \u003cstrong\u003eM48-M42 adapter\u003c\/strong\u003e ring for additional flexibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use a non-ZWO guide camera with this OAG?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The ZWO OAG includes a standard \u003cstrong\u003e1.25” holder\u003c\/strong\u003e. Any guide camera with a 1.25\" nosepiece form factor will fit and can be used for autoguiding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-OAG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO OAG Body\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25” Holder\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e5mm T2 Extender\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM42 Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM48 Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM48-M42 Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eHexagon Wrench\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967445561629,"sku":"ZWO-OAG","price":179.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-OAG-1__40053.1642537735.1280.1280.jpg?v=1684342114"},{"product_id":"zwo-soft-bag-for-cooled-cameras","title":"ZWO Soft Bag for Cooled Cameras","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCompact 10cm x 10cm x 10.5cm Dimensions\u003c\/li\u003e\n\u003cli\u003eOfficial OEM Bag for All ZWO Cooled Cameras\u003c\/li\u003e\n\u003cli\u003eConstructed from Padded Heavy-Duty Fabric\u003c\/li\u003e\n\u003cli\u003eLightweight Alternative to Hard Cases\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO Soft Bag for Cooled Cameras\u003c\/h2\u003e\n\u003cp\u003eThis ZWO Soft Bag provides a compact 10cm x 10cm x 10.5cm padded enclosure for safe storage and transport. Designed as the official OEM replacement, it is confirmed to fit all ZWO cooled cameras and is backed by a 2-year warranty.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePadded Protection in a 10.5cm Cube\u003c\/h3\u003e\n\u003cp\u003eConstructed from padded, heavy-duty fabric, this bag protects your ZWO cooled camera from minor bumps, scratches, and dust. The 10cm x 10cm x 10.5cm dimensions create a snug fit, preventing the camera body from shifting excessively during transport to and from your observing site.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOEM Replacement with a 2-Year Warranty\u003c\/h3\u003e\n\u003cp\u003eThis is the identical soft bag that ZWO includes with their new cooled cameras, making it the perfect replacement for a lost or damaged original. As a lightweight alternative to a bulky hard case, it's ideal for local trips or for organizing your gear at home. Note that this is a soft bag and does not include custom foam inserts; protection is provided by the padded fabric construction.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the ZWO Soft Bag fit my specific cooled camera, like an ASI2600MC Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this bag is designed to fit \u003cstrong\u003eall ZWO cooled cameras\u003c\/strong\u003e. The dimensions of 10cm x 10cm x 10.5cm accommodate the body of any camera in ZWO's cooled lineup, from the ASI533 to the larger ASI6200 series.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this the same bag that comes with new ZWO cooled cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is the official OEM (Original Equipment Manufacturer) soft bag. If you've lost or damaged the case that came with your camera, this is the direct replacement from ZWO.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the ZWO Soft Bag include any foam inserts for accessories?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the bag does not come with any foam inserts. It is a simple, single-compartment soft case where protection is provided by the \u003cstrong\u003epadded heavy-duty fabric\u003c\/strong\u003e of the walls themselves.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I store my ZWO camera in this bag with desiccant tablets installed?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The bag is perfectly sized for storing the camera body, even with the desiccant holder installed on the side of the camera. It helps keep the camera in a clean, contained environment between imaging sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow much protection does the ZWO Soft Bag offer compared to a hard case?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe soft bag is designed to protect against dust, scratches, and minor bumps. It is not a substitute for a hard case with custom foam for shipping or air travel. It's best suited for carrying your camera in a larger gear bag or for safe storage at home.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the warranty on the ZWO Soft Bag?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eLike other ZWO accessories, this soft bag is covered by a \u003cstrong\u003e2-year warranty\u003c\/strong\u003e against manufacturing defects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-SOFTBAG1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eAll ZWO Cooled Cameras\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (LxWxH)\u003c\/td\u003e\n\u003ctd\u003e10cm x 10cm x 10.5cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePadded Heavy-Duty Fabric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFoam Inserts\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO Soft Bag for Cooled Cameras\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967445725469,"sku":"ZWO-Softbag1","price":27.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-Soft-Bag-for-Cooled-Cameras.jpg?v=1742408719"},{"product_id":"zwo-t2-tilter-ii","title":"ZWO T2 Tilter II","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCorrects sensor tilt for sharp stars edge-to-edge\u003c\/li\u003e\n\u003cli\u003eEliminates Newton's rings in H-alpha solar imaging\u003c\/li\u003e\n\u003cli\u003eAdds only 11 mm of back focus to the imaging train\u003c\/li\u003e\n\u003cli\u003eFeatures standard M42x0.75 T2 threads on both sides\u003c\/li\u003e\n\u003cli\u003e78 mm diameter with direct connection to 2\" EFW filter wheels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO T2 Tilter II for ASI Cameras\u003c\/h2\u003e\n\u003cp\u003eThe ZWO T2 Tilter II allows precise adjustment of your camera's imaging plane within a slim 11 mm profile, using six adjustment points to correct for sensor tilt. With a 78 mm diameter body and M42x0.75 T2 threads, this adapter integrates directly into ZWO imaging trains, most notably for eliminating Newton's rings during H-alpha solar imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCorrecting Sensor Tilt with 6 Adjustment Points\u003c\/h3\u003e\n\u003cp\u003eIf you notice elongated stars in the corners of your images, the cause is often a slight tilt in the sensor plane relative to your telescope's focal plane. The T2 Tilter II addresses this mechanically, with six push\/pull adjustment nuts that allow you to make minute changes to the camera's angle until the entire field is perfectly orthogonal to the light path, resulting in sharp, round stars across the full frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eEliminating Newton's Rings from H-Alpha Solar Images\u003c\/h3\u003e\n\u003cp\u003eThe primary function of the T2 Tilter II is to solve the problem of Newton's rings, an interference pattern that commonly appears in monochromatic solar imaging. By introducing a very slight, controlled tilt to the camera sensor, you can shift the parallel surfaces out of alignment just enough to cancel out this pattern, leaving you with a clean, high-contrast image of the Sun's chromosphere without post-processing artifacts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eT2 Tilter II vs. Original T2 Tilter\u003c\/h3\u003e\n\u003cp\u003eWhile the original T2 Tilter provided the same core tilt-correction function, the T2 Tilter II improves its system integration. The key upgrade is the addition of multiple screw holes on the adapter body, which allow for a direct, secure connection to ZWO's 2\" Electronic Filter Wheels (EFW). This creates a more rigid imaging train, reducing the potential for flexure that can be introduced by threaded adapters alone.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOriginal T2 Tilter:\u003c\/strong\u003e Provided fundamental tilt adjustment via threaded connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT2 Tilter II:\u003c\/strong\u003e Adds direct-mount compatibility with 2\" ZWO EFWs for a more robust mechanical connection, while retaining the same 11 mm thickness.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eMechanical Integration with M42 Threads \u0026amp; 11 mm Profile\u003c\/h3\u003e\n\u003cp\u003eThe adapter maintains a minimal optical path length, consuming only 11 mm of back focus. Both sides feature standard M42x0.75 T2 threads for universal compatibility with most astronomy cameras, filter wheels, and off-axis guiders. For specific ZWO cameras with shorter back focus requirements, an included T2-T2 adapter ensures correct spacing and connection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Connection:\u003c\/strong\u003e Cameras like the ASI294, ASI1600, and ASI533 attach directly to the tilter body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdapter Required:\u003c\/strong\u003e Uncooled cameras like the ASI178, ASI290, and ASI120 must use the included T2-T2 adapter before connecting to the tilter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncompatible Models:\u003c\/strong\u003e This tilter is not suitable for large-format cameras like the ASI071, ASI2600, and ASI6200.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary purpose of the ZWO T2 Tilter II?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO T2 Tilter II has two main functions. Its primary application is to eliminate \u003cstrong\u003eNewton's rings\u003c\/strong\u003e in H-alpha solar imaging by introducing a slight, controlled tilt to the camera sensor. Its secondary function is to correct for \u003cstrong\u003esensor tilt\u003c\/strong\u003e in any astrophotography setup, ensuring stars are sharp across the entire field of view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ZWO T2 Tilter II help when imaging the Sun in H-alpha?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhen imaging the Sun with a monochrome camera and a narrow H-alpha filter, reflections between the parallel surfaces of the sensor and filter can create an interference pattern called Newton's rings. The ZWO T2 Tilter II allows you to angle the camera sensor just enough to break this parallel alignment, causing the interference pattern to disappear from your final image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMy stars are elongated in the corners with my ASI1600MM on my f\/4 Newtonian. Can the ZWO T2 Tilter II fix this?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is a classic sign of sensor tilt, which is especially noticeable in fast optical systems like an f\/4 Newtonian. The ZWO T2 Tilter II is designed to correct this. By carefully adjusting the six push\/pull screws, you can align the ASI1600's sensor plane perfectly with your telescope's focal plane, which should make the stars in the corners round and sharp.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main difference between the ZWO T2 Tilter II and the original version?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe main upgrade in the T2 Tilter II is its improved mechanical compatibility. The new version adds multiple screw holes that allow it to be bolted directly to ZWO's 2\" Electronic Filter Wheels (EFW). This creates a more rigid and reliable connection compared to relying on T2 threads alone.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich ZWO cameras are incompatible with the ZWO T2 Tilter II?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO T2 Tilter II is not recommended for use with ZWO's larger format cameras due to their size, weight, and potential for vignetting. The specifically incompatible models are the \u003cstrong\u003eASI071, ASI2600, and ASI6200\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need the included T2-T2 adapter for my ASI294MC Pro with the ZWO T2 Tilter II?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, you do not. According to ZWO's connection guide, cameras like the ASI294, ASI1600, and ASI183 (both cooled and uncooled versions) connect directly to the main body of the T2 Tilter II without needing the included T2-T2 adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-T2-TILTER-II\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThreads\u003c\/td\u003e\n\u003ctd\u003eM42x0.75 T2 (Female\/Male)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e11 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e78 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustment\u003c\/td\u003e\n\u003ctd\u003e6 Push\/Pull Points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO T2 Tilter II Adapter Body\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eT2-T2 Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eHex Wrench\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967446675741,"sku":"ZWO-T2-Tilter-II","price":67.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-T2-Tilter-1__24485.1596910060.1280.1280.jpg?v=1684342128"},{"product_id":"zwo-t2-to-c-cs-adapter","title":"ZWO T2 To C\/CS Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects C-mount and CS-mount lenses to T2-threaded cameras\u003c\/li\u003e\n\u003cli\u003eAdds a precise 7mm to the optical path length\u003c\/li\u003e\n\u003cli\u003eStandard M42x0.75 female threads for universal camera compatibility\u003c\/li\u003e\n\u003cli\u003eAll-metal, black anodized construction minimizes reflections\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO T2 to C\/CS Adapter\u003c\/h2\u003e\n\u003cp\u003eThe ZWO T2 to C\/CS Adapter connects lenses with C or CS-mount threads to any camera body using the standard M42 T2-thread. This all-metal adapter adds a fixed optical length of 7mm, establishing the correct back focus for both C-mount (17.5mm) and CS-mount (12.5mm) lens standards when paired with compatible ASI cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDual C\/CS Lens Compatibility with 7mm Optical Length\u003c\/h3\u003e\n\u003cp\u003eThis adapter provides a single, robust solution for two distinct lens standards. It presents standard female M42 (T2) threads to your camera and accepts male C or CS threads from the lens. The adapter's fixed 7mm thickness is the key dimension that correctly positions the sensor relative to the lens's focal plane.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eC-Mount Lens Back Focus:\u003c\/strong\u003e Results in a 17.5mm back focus distance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCS-Mount Lens Back Focus:\u003c\/strong\u003e Results in a 12.5mm back focus distance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Machined from black anodized aluminum to ensure a secure, non-reflective connection in your imaging train.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAdapting Guide Scopes and All-Sky Lenses with M42 Threads\u003c\/h3\u003e\n\u003cp\u003eThe primary function of the T2-CS adapter is to let you repurpose widely available and affordable C\/CS lenses for astronomical use. This is especially useful for creating compact, lightweight guide scope setups or for wide-field meteor cameras where a full telescope is unnecessary. The universal M42 T2-thread ensures it will connect to the vast majority of dedicated astronomy cameras, not just ZWO models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the ZWO T2-CS adapter used for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO T2-CS adapter connects a C-mount or CS-mount lens (commonly used in security and machine vision) to an astronomy camera that has standard M42 T2-threads. This allows you to use compact, fast lenses for applications like autoguiding, all-sky imaging, or wide-field astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ZWO T2-CS adapter handle both C and CS lenses?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter physically accepts both C and CS-mount threads. The resulting back focus distance changes depending on which type of lens you attach. With a \u003cstrong\u003eC-mount lens, the back focus is 17.5mm\u003c\/strong\u003e. With a \u003cstrong\u003eCS-mount lens, the back focus is 12.5mm\u003c\/strong\u003e. You must ensure your camera's sensor-to-flange distance is compatible with these values.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the optical path length of the ZWO T2-CS adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter itself has a physical thickness, or optical path length, of exactly \u003cstrong\u003e7mm\u003c\/strong\u003e. This dimension must be included in your back focus calculations when building your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ZWO T2-CS adapter to attach a security camera lens to my ASI120MM Mini for guiding?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an ideal application. The ASI120MM Mini has a 12.5mm back focus, which perfectly matches the 12.5mm back focus achieved when using a CS-mount lens with this adapter. This combination creates an extremely compact and effective autoguiding system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the ZWO T2-CS adapter let me connect an f\/1.4 C-mount lens to my ASI585MC for meteor imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The ZWO T2-CS adapter connects the C-mount lens to the M42 threads on the ASI585MC. However, the ASI585MC has a back focus of 6.5mm or 17.5mm. To use a C-mount lens, which requires 17.5mm of back focus with this adapter, you would need to ensure you are using the camera configuration that provides that exact spacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAre there any other adapters needed to use the ZWO T2-CS adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this is a direct, one-piece adapter. One side threads into your camera's M42 T2-threads, and the other side threads onto your C or CS-mount lens. No other parts are required for the connection itself.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-T2-CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdapter Type (Camera Side)\u003c\/td\u003e\n\u003ctd\u003eM42 (T or T2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdapter Type (Lens Side)\u003c\/td\u003e\n\u003ctd\u003eC or CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eZWO - 2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eT2 to CS Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967446708509,"sku":"ZWO-T2-CS","price":17.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-T2-To-C-CS-Adapter-1__19128.1596910061.1280.1280.jpg?v=1684342132"},{"product_id":"zwo-t2-male-to-t2-male-adapter","title":"ZWO T2 Male to T2 Male Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects two female M42 T-threaded components\u003c\/li\u003e\n\u003cli\u003eAdds a fixed 2mm of optical path length\u003c\/li\u003e\n\u003cli\u003eMale-to-male M42x0.75 thread on both sides\u003c\/li\u003e\n\u003cli\u003eDurable black anodized metal construction reduces reflections\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO T2 Male to T2 Male Adapter\u003c\/h2\u003e\n\u003cp\u003eThe ZWO T2 to T2 Male Adapter provides a rigid, secure connection between female M42 T-threaded accessories while adding exactly 2mm of back focus to your imaging train. Each side features 3 mm of thread depth, ensuring a stable, non-flexing link between critical components like filter wheels, off-axis guiders, and camera bodies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAchieve Precise 2mm Spacing\u003c\/h3\u003e\n\u003cp\u003eThis adapter serves a dual purpose: it converts any female T2 port into a male T2 port and functions as a precise 2mm spacer. This fixed length is critical for hitting the standard 55mm back focus distance required by many field flatteners and coma correctors when combining accessories of known thicknesses. Its machined metal body ensures your optical path length remains fixed and repeatable every time you set up.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUniversal M42 T-Thread Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt around the universal M42x0.75 T-thread standard, this adapter is compatible with the vast majority of astrophotography cameras, filter wheels, off-axis guiders, and other accessories. The black anodized finish minimizes stray light reflections inside your imaging train, protecting image contrast. This is a fundamental component for configuring a robust and modular imaging setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the ZWO T2 Male to T2 Male Adapter typically used for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is primarily used to connect two accessories that both have female T2 (M42x0.75) threads. It also acts as a spacer, adding a fixed \u003cstrong\u003e2 mm\u003c\/strong\u003e of length to the optical path, which is often necessary to achieve the correct back focus distance for a specific corrector or flattener.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 2mm adapter help me achieve 55mm back focus with my ZWO camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt can be a key component. Achieving the standard 55mm back focus requires adding up the optical path length of every item in your imaging train (camera sensor depth, filter wheel, off-axis guider, and all spacers). This \u003cstrong\u003e8 mm\u003c\/strong\u003e adapter helps you reach that total when combined with other T-threaded spacers and accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ZWO T2 adapter to connect a ZWO filter wheel to a ZWO OAG?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is a common application. If both your ZWO filter wheel and ZWO Off-Axis Guider present female T2 threads that need to be joined, this male-to-male adapter will bridge the connection while adding 2 mm of spacing between them.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between T2, T-thread, and M42 threads?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIn the context of astronomy, these terms are often used interchangeably to refer to the same standard: a metric thread with a \u003cstrong\u003e42 mm diameter\u003c\/strong\u003e and a \u003cstrong\u003e0.75 mm thread pitch\u003c\/strong\u003e (M42x0.75). This adapter conforms to that universal standard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this ZWO adapter made of metal or plastic?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO T2 to T2 adapter is machined from a single piece of \u003cstrong\u003eblack anodized metal\u003c\/strong\u003e for maximum rigidity and durability. This prevents flexure in the imaging train that could tilt your camera sensor and compromise your images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the 2 mm length of the ZWO T2 adapter include the threads?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e2 mm\u003c\/strong\u003e measurement refers to the total length of the adapter from end to end. This is the value you should use when calculating your total back focus distance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-T2-T2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type (Side A)\u003c\/td\u003e\n\u003ctd\u003eMale M42x0.75 (T2-Thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type (Side B)\u003c\/td\u003e\n\u003ctd\u003eMale M42x0.75 (T2-Thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Path Length\u003c\/td\u003e\n\u003ctd\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Depth\u003c\/td\u003e\n\u003ctd\u003e3 mm ± 0.1 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO T2 Male to T2 Male Adapter (2 mm)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967446806813,"sku":"ZWO-T2-T2","price":17.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-T2-to-T2-Adapter-1__84161.1648822466.1280.1280.jpg?v=1684342148"},{"product_id":"zwo-t2-1-25-filter-adapter","title":"ZWO T2-1.25\" Filter Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects M42 (T2) threaded cameras to 1.25\" filters\u003c\/li\u003e\n\u003cli\u003eAdds only 1 mm of optical length to the imaging train\u003c\/li\u003e\n\u003cli\u003eMaintains critical back focus for correctors and reducers\u003c\/li\u003e\n\u003cli\u003eSecure threaded connection prevents tilt and flexure\u003c\/li\u003e\n\u003cli\u003eLightweight, black-anodized aluminum construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO T2 to 1.25\" Filter Adapter\u003c\/h2\u003e\n\u003cp\u003eThe ZWO T2 to 1.25\" Filter Adapter adds standard 1.25\" filter capability to any M42 T-threaded camera using just 1 mm of back focus. This low-profile solution is the most direct way to mount a single 1.25\" filter for planetary imaging or guiding without the bulk of a filter wheel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eMinimal Optical Path: Just 1 mm\u003c\/h3\u003e\n\u003cp\u003eConsuming only 1 mm of your available back focus, this adapter is essential for complex imaging trains. When using a focal reducer or field flattener that demands precise sensor spacing, adding a filter without this adapter can be impossible. Its ultra-thin design allows you to add a UV\/IR cut, narrowband, or LRGB filter without having to reconfigure your entire optical setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSecure M42 Connection for 1.25\" Filters\u003c\/h3\u003e\n\u003cp\u003eA threaded connection is superior to slip-fit nosepieces for mounting filters. The adapter's M42 threads screw directly onto your camera body, creating a rigid, flex-free junction that prevents optical tilt. This ensures your sensor and filter remain perfectly parallel to the light path, a critical factor for maintaining a flat field and sharp stars corner-to-corner.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ZWO T2-1.25\" Adapter affect my back focus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter adds exactly \u003cstrong\u003e1 mm\u003c\/strong\u003e of mechanical length to your imaging train. This is a minimal distance designed to preserve the critical back focus required by most optical correctors like field flatteners or coma correctors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this ZWO adapter work with non-ZWO cameras and filters?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The adapter uses the universal \u003cstrong\u003eM42 (T2)\u003c\/strong\u003e thread standard on the camera side and accepts any standard \u003cstrong\u003e1.25\"\u003c\/strong\u003e astronomy filter. It is compatible with any T-threaded astronomy camera and any brand of 1.25\" filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ZWO T2-1.25\" Adapter with a filter wheel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter is designed as an alternative to a filter wheel for single-filter applications. It threads directly into the camera body where a filter wheel would normally attach. It is ideal for monochrome guide cameras or for color cameras where you only need to add a single light pollution or UV\/IR cut filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of this adapter over a 1.25\" nosepiece with filter threads?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is rigidity. A direct \u003cstrong\u003eM42 thread\u003c\/strong\u003e connection prevents the tilt and sag that can occur with a nosepiece held in place by thumbscrews. This secure, parallel connection is crucial for avoiding image degradation, especially with sensitive optical systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ZWO T2-1.25\" Adapter a good choice for adding a UV\/IR cut filter to my ASI178MC for lunar imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. For planetary, lunar, or solar imaging with a one-shot-color camera like the ASI178MC, adding a single UV\/IR cut filter is critical for sharp focus. This 1 mm adapter provides the most secure and lowest-profile method to do so without altering your setup significantly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I tighten the ZWO T2-1.25\" Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter has four small holes on its face. While it can often be tightened by hand, if you need extra leverage, you can use a spanner wrench or the tips of a small pair of needle-nose pliers inserted into two opposing holes to gently secure it to your camera body.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eZWO-T2-1.25-3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Connector\u003c\/td\u003e\n\u003ctd\u003eM42 (T2) Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Side Connector\u003c\/td\u003e\n\u003ctd\u003e1.25\" Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e1 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eT2 to 1.25\" Filter Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Manufacturer Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967447298333,"sku":"ZWO-T2-1.25-3","price":22.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-T2-1-25-inch-Filter-Adapter.jpg?v=1742409805"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/collections\/ZWO-Logo.jpg?v=1732646396","url":"https:\/\/davidastro.com\/en-eu\/collections\/zwo.oembed?page=7","provider":"David Astro","version":"1.0","type":"link"}