{"title":"QHYCCD Camera Lenses \u0026 Adapters","description":"\u003cp\u003eQHYCCD camera lenses and adapters let you use QHYCCD cameras with photo lenses and other optics. The M42\/M54 to Canon EF\/Nikon F lens adapter and the M42(M) Canon and Nikon 10mm adapters mount DSLR lenses on cameras with M42 or M54 threads.\u003c\/p\u003e\u003cp\u003eAdapter Kit Combos A3, B2 and B3 cover other camera connections, the SWIR lens is designed for the QHY990 and QHY991 short-wave infrared cameras, and an expansion kit adds options for the QHY5III462C.\u003c\/p\u003e","products":[{"product_id":"qhyccd-m42m-canon-10mm-adapter","title":"QHYCCD M42(M) Canon 10mm Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects Canon EF Lenses to M42 Female Threads\u003c\/li\u003e\n\u003cli\u003eProvides a Fixed 10mm Optical Path Length\u003c\/li\u003e\n\u003cli\u003eM42x0.75 Male \"T-Thread\" Interface\u003c\/li\u003e\n\u003cli\u003eEnables Wide-Field Imaging with Photographic Lenses\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\u003eQHYCCD M42(M) Canon 10mm Adapter\u003c\/h2\u003e\n\u003cp\u003eThe QHYCCD M42(M) Canon 10mm Adapter connects Canon EF-mount lenses to any camera or accessory with a female M42x0.75 thread. This adapter provides exactly 10mm of optical path length, which is critical for achieving correct back focus with specific QHYCCD cameras and filter wheel combinations.\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\u003eAdapt Canon EF Lenses with a Precise 10mm M42 Connection\u003c\/h3\u003e\n\u003cp\u003eThis adapter allows you to repurpose high-quality Canon EF-mount photographic lenses for astrophotography with your QHYCCD camera. By providing a standard male M42x0.75 \"T-thread\" interface, it opens up wide-field imaging possibilities, from capturing the full expanse of the Andromeda Galaxy (M31) to sweeping vistas of the Milky Way.\u003c\/p\u003e\n\u003cp\u003eThe core function of this adapter is to establish a precise 10mm spacing in the optical path. This fixed distance is an essential component for building imaging trains that achieve correct back focus, ensuring sharp stars across the entire field when combined with specific QHYCCD cameras and accessories.\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 QHYCCD M42(M) Canon 10mm Adapter used for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt connects a \u003cstrong\u003eCanon EF-mount lens\u003c\/strong\u003e to a camera or accessory with female \u003cstrong\u003eM42 T-threads\u003c\/strong\u003e, adding exactly \u003cstrong\u003e10mm\u003c\/strong\u003e to the optical path. This is ideal for using photographic lenses for wide-field astrophotography with cooled astronomy cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would I use the QHYCCD 10mm adapter to image the Rho Ophiuchi cloud complex?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor a wide target like the Rho Ophiuchi region, you would attach a fast Canon EF lens (e.g., a 135mm or 200mm lens) to this adapter. The adapter then threads onto your QHYCCD camera, letting you use the lens's wide field of view to capture the entire nebula complex. The fixed \u003cstrong\u003e10mm spacing\u003c\/strong\u003e is a key part of the calculation for achieving sharp focus from edge to edge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the QHYCCD M42 Canon adapter support electronic aperture or autofocus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This is a purely mechanical adapter. It provides a secure physical connection and precise spacing but does not have electronic contacts to transmit data. Focus and aperture must be set manually on the lens itself.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the \"10mm\" in the QHYCCD M42 Canon Adapter's name refer to?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \"10mm\" specifies the optical path length, or thickness, of the adapter. When inserted into your imaging train, it increases the distance between the lens and the camera sensor by exactly 10mm, a critical value for back focus calculations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this QHYCCD adapter with a filter wheel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this adapter is designed to be used as part of an imaging train that may include a filter wheel. You would typically place it between the Canon lens and the filter wheel, ensuring the total back focus distance matches your camera's requirement. You must account for the \u003cstrong\u003e10mm path length\u003c\/strong\u003e of this adapter when calculating your total spacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the QHYCCD M42 adapter compatible 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 for the Canon EF mount. While EF-S lenses can physically attach to an EF mount, their rear elements often protrude further back. This could potentially interfere with filters or the camera's optical window. It is recommended for use with full-frame compatible \u003cstrong\u003eEF lenses\u003c\/strong\u003e to ensure clearance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/qhyccd-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eQHYCCD Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"QHYCCD","offers":[{"title":"Default Title","offer_id":44967211532573,"sku":"QHY-020072","price":49.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/QHY-Adapters-Canon_Lens_Adapter-020071_600px__18358.1560934073.1280.1280__84725.1642535653.1280.1280.jpg?v=1684339207"},{"product_id":"qhyccd-expansion-kit-for-qhy5iii462c","title":"QHYCCD Expansion Kit for QHY5III462C","description":"\u003c!-- more --\u003e\u003cp\u003eThis kit contains a methane filter, an AllSky lens and a lens adapter. It's made for the QHY5III462C camera only.\u003c\/p\u003e","brand":"QHYCCD","offers":[{"title":"Default Title","offer_id":44967764394269,"sku":"QHY-120001","price":70.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/QHYCCD-QHY5III462-Expansion-Kit__14394.1610052778.1280.1280.jpg?v=1684345816"},{"product_id":"qhyccd-adapter-kit-combo-a3","title":"QHYCCD Adapter Kit - Combo A3","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects QHYCCD cameras to Nikon F-mount lenses\u003c\/li\u003e\n\u003cli\u003eEnables wide-field astrophotography with camera lenses\u003c\/li\u003e\n\u003cli\u003eCamera-side thread: M54\u003c\/li\u003e\n\u003cli\u003eLens-side mount: Nikon F-Bayonet\u003c\/li\u003e\n\u003cli\u003eAll-metal construction for secure connection\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\u003eQHYCCD Adapter Kit - Combo A3\u003c\/h2\u003e\n      \u003cp\u003eThe QHYCCD Adapter Kit - Combo A3 provides the essential mechanical link between your QHYCCD camera and high-quality Nikon F-mount camera lenses. This adapter enables wide-field astrophotography by leveraging the optical excellence of photographic lenses, transforming your dedicated astronomy camera into a versatile, wide-angle imaging system.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eConnect Nikon F-Mount Lenses to Your QHYCCD M54 Camera\u003c\/h3\u003e\n      \u003cp\u003eUnlock the potential of your Nikon F-mount lenses for capturing vast celestial objects. The Combo A3 adapter provides a direct, secure connection from the female M54 threads found on many QHYCCD cameras to the bayonet mount of a Nikon lens. This setup is ideal for imaging large targets that won't fit in a typical telescope's field of view, such as the Andromeda Galaxy (M31) or the North American Nebula (NGC 7000).\u003c\/p\u003e\n      \u003cp\u003eThis is a purely mechanical adapter, ensuring a rigid connection with no flexure. As a result, lens functions must be controlled manually; you will use the lens's own focus ring to achieve sharp stars, and the aperture must be set using the physical aperture ring on the lens. The adapter does not transmit electronic data for autofocus or aperture control.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary function of the QHYCCD Adapter Kit - Combo A3?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe QHYCCD Adapter Kit - Combo A3 physically connects a QHYCCD camera with female M54 threads to a Nikon F-mount photographic lens. This allows you to use high-quality camera lenses for wide-field astrophotography with your sensitive, cooled astronomy camera.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhich cameras are compatible with the QHYCCD Adapter Kit - Combo A3?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThis adapter is designed for QHYCCD cameras that feature a female \u003cstrong\u003eM54 (M54x0.75)\u003c\/strong\u003e threaded interface for connecting to the optical train. This is a common standard on many of their cooled CMOS models.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the QHYCCD Adapter Kit - Combo A3 to control my lens's autofocus?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003e\u003cstrong\u003eNo.\u003c\/strong\u003e The Combo A3 adapter is a mechanical-only connection. It does not transmit electronic signals, so features like autofocus and electronic aperture control are not supported. Focusing and aperture must be adjusted manually on the lens itself.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy would I use the QHYCCD Adapter Kit - Combo A3 to image the North American Nebula (NGC 7000)?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eTo capture large targets like the North American Nebula (NGC 7000), you need a very wide field of view. The Combo A3 adapter lets you use a fast, high-quality Nikon telephoto lens (e.g., 200mm or 300mm) with your sensitive astronomy camera, allowing you to frame the entire nebula complex in a single shot.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the QHYCCD Adapter Kit - Combo A3 help image the Rho Ophiuchi cloud complex?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe Rho Ophiuchi region is a sprawling complex of dark and reflection nebulae that benefits from a wide perspective. Using the Combo A3 adapter with a prime lens, such as a 50mm or 85mm Nikon lens, allows for deep, wide-field exposures that can capture the full extent and intricate detail of this famous stellar nursery.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the QHYCCD Adapter Kit - Combo A3 set the correct back focus for my Nikon lens?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThis adapter provides a fixed optical depth designed to place the camera sensor at the correct distance for a standard Nikon F-mount lens to reach infinity focus. Final, precise focus is always achieved by manually adjusting the focus ring on the lens itself.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n    \n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/qhyccd-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eQHYCCD Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"QHYCCD","offers":[{"title":"Default Title","offer_id":44967916175645,"sku":"QHY-020102","price":49.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/QHY-Adapter-Kit-Combo-A3__07089.1628718958.1280.1280.jpg?v=1684346992"},{"product_id":"qhyccd-adapter-kit-combo-b2","title":"QHYCCD Adapter Kit - Combo B2","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects M54 Threaded Cameras to Canon EF Lenses\u003c\/li\u003e\n\u003cli\u003eProvides a Precise 10mm Optical Path Length\u003c\/li\u003e\n\u003cli\u003eM54x0.75 Female Threads\u003c\/li\u003e\n\u003cli\u003eSecure Bayonet-Style Canon EF Mount\u003c\/li\u003e\n\u003cli\u003eEnables Wide-Field Astrophotography with DSLR Lenses\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\u003eQHYCCD Adapter Kit - Combo B2\u003c\/h2\u003e\n\u003cp\u003eThe QHYCCD Adapter Kit - Combo B2 is a specialized component designed to bridge the gap between your astronomical camera and high-quality photographic lenses, providing a precise 10mm of optical spacing. This adapter allows you to connect any accessory with M54 threads directly to a Canon EF lens mount, maintaining the critical back focus required for sharp, coma-free stars across the entire frame. With a fixed thickness of 10mm, it serves as a foundational piece in building a stable, wide-field imaging 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\u003eAchieve 10mm Spacing Between M54 Accessories and Canon EF Lenses\u003c\/h3\u003e\n\u003cp\u003eThis adapter's sole purpose is to provide a robust mechanical connection and a fixed 10mm of optical path length. This is essential when using a QHYCCD camera with a Canon EF lens, as these lenses are designed to focus at a specific distance from the sensor. The Combo B2 adapter ensures that your camera's sensor is placed at the correct focal plane, preserving the optical corrections of your lens.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM54x0.75 Threading:\u003c\/strong\u003e The female M54 threads offer a wide, non-vignetting connection compatible with many QHYCCD cameras and filter wheels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCanon EF Bayonet:\u003c\/strong\u003e Provides a secure, locking connection to the full range of Canon EF-mount photographic lenses, from wide-angle to telephoto.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixed 10mm Path Length:\u003c\/strong\u003e Simplifies back focus calculations by providing a known, non-adjustable spacing value for your 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 primary function of the QHYCCD Adapter Kit - Combo B2?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary function of the \u003cstrong\u003eQHYCCD Adapter Kit - Combo B2\u003c\/strong\u003e is to connect a camera or accessory with M54 threads to a Canon EF-mount lens. It provides exactly \u003cstrong\u003e10mm\u003c\/strong\u003e of spacing, which is critical for achieving the correct back focus needed for sharp, well-corrected images with photographic lenses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the connection types on the QHYCCD Combo B2 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter features a female \u003cstrong\u003eM54x0.75 thread\u003c\/strong\u003e on the camera side and a male \u003cstrong\u003eCanon EF bayonet mount\u003c\/strong\u003e on the lens side. This allows you to attach M54-threaded accessories like a QHYCCD camera or filter wheel to any Canon EF lens.\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 10mm spacing from the QHYCCD Combo B2?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need this 10mm adapter if the total back focus requirement of your Canon EF lens (typically 44mm) is not met by your camera and any other accessories in the light path. You must calculate the total length of your imaging train; this adapter provides a fixed 10mm component to help you reach that target distance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the QHYCCD Combo B2 to image the Andromeda Galaxy (M31) with a telephoto lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. This adapter is ideal for that purpose. By connecting a sensitive QHYCCD camera to a Canon EF telephoto lens (e.g., 200mm or 300mm), you can create a wide-field imaging system perfectly suited for large targets like the Andromeda Galaxy (M31) or the Orion Nebula (M42).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the QHYCCD Combo B2 work with my QHY268C camera and a Canon EF 50mm f\/1.8 lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this adapter provides the correct physical mount to connect a QHY268C (which uses M54 threads) to a Canon EF 50mm lens. The 10mm spacing it provides is one piece of the puzzle; you will need to ensure your total back focus stack (camera sensor depth + filter wheel + this adapter) equals the lens's required 44mm back focus for optimal results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the spacing of the QHYCCD Combo B2 adapter adjustable?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the QHYCCD Adapter Kit - Combo B2 provides a fixed optical path length of \u003cstrong\u003e10mm\u003c\/strong\u003e. It is not adjustable. This fixed length ensures rigidity and simplifies back focus calculations.\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\u003eAdapter Type\u003c\/td\u003e\n\u003ctd\u003eM54 Thread to Canon EF Lens Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Path Length\u003c\/td\u003e\n\u003ctd\u003e10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera-Side Connection\u003c\/td\u003e\n\u003ctd\u003eM54 x 0.75 Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens-Side Connection\u003c\/td\u003e\n\u003ctd\u003eCanon EF Bayonet Mount\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\"\u003e10mm M54 to Canon EF 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\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/qhyccd-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eQHYCCD Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"QHYCCD","offers":[{"title":"Default Title","offer_id":44967919780125,"sku":"QHY-020104","price":49.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/QHY-Adapter-Combo-B2__17627.1634308374.1280.1280.jpg?v=1684347036"},{"product_id":"qhyccd-adapter-kit-combo-b3","title":"QHYCCD Adapter Kit - Combo B3","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects Nikon F-mount lenses to M54 threaded accessories\u003c\/li\u003e\n\u003cli\u003eProvides a precise 12.5mm of optical path length\u003c\/li\u003e\n\u003cli\u003eEnables wide-field astrophotography with photographic lenses\u003c\/li\u003e\n\u003cli\u003eSecure bayonet and threaded connections\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\u003eQHYCCD Adapter Kit - Combo B3\u003c\/h2\u003e\n\u003cp\u003eThe QHYCCD Adapter Kit - Combo B3 provides a precise 12.5mm of optical path length to connect Nikon F-mount lenses to any M54 x 0.75 threaded QHY camera or accessory. This adapter is the key component for achieving the standard 46.5mm back focus required when using wide-field Nikon F lenses for astrophotography with a cooled astronomy camera.\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\u003eConnect Nikon F Lenses to Your M54 Gear at 12.5mm\u003c\/h3\u003e\n\u003cp\u003eThis adapter solves a critical connection challenge: mounting high-quality photographic lenses onto cooled astronomy cameras. The female Nikon F-mount bayonet provides a secure, non-rotating connection to your lens, while the male M54 thread attaches directly to QHY filter wheels or camera bodies, forming the foundation of a robust wide-field imaging train.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNikon F-Mount Compatibility:\u003c\/strong\u003e Allows the use of a wide range of new and vintage Nikon F-mount SLR and DSLR lenses for capturing large celestial objects like the Andromeda Galaxy (M31) or the Rho Ophiuchi cloud complex.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM54 x 0.75 Thread:\u003c\/strong\u003e Provides a standard, rigid interface for connecting to many QHY cooled cameras and the QHYCFW3 series of filter wheels without introducing flexure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12.5mm Optical Thickness:\u003c\/strong\u003e Engineered to consume exactly 12.5mm of the back focus distance, this adapter simplifies the calculations required to achieve a perfectly flat field with various camera and accessory combinations.\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 function of the QHYCCD Adapter Kit - Combo B3?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe QHYCCD Combo B3 adapter is designed to securely connect a Nikon F-mount camera lens to an astronomy camera or filter wheel that has a female M54 x 0.75 thread. Its primary purpose is to enable wide-field imaging using standard photographic lenses instead of a telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the exact optical path length of the QHYCCD Combo B3 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter adds exactly \u003cstrong\u003e12.5mm\u003c\/strong\u003e to the optical train. This precise thickness is crucial for calculating the correct spacing needed to achieve sharp focus across the entire imaging sensor, as Nikon F-mount lenses require a total back focus of 46.5mm from the mounting flange to the sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich specific Nikon lenses can I use with the QHYCCD Combo B3?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is compatible with any lens that uses the standard \u003cstrong\u003eNikon F-mount\u003c\/strong\u003e. This includes decades of manual focus (Nikkor AI, AI-S) and autofocus (AF, AF-S) lenses. Note that electronic aperture and focus control are not supported through this purely mechanical adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat QHYCCD equipment can I connect the M54 thread of the Combo B3 to?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe male M54 thread is designed to connect directly to QHYCCD accessories like the \u003cstrong\u003eQHYCFW3 series filter wheels\u003c\/strong\u003e (e.g., QHYCFW3L, QHYCFW3M) or any camera system that presents a female M54 thread. This makes it a core component for building a versatile imaging setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMy QHY camera has 17.5mm of back focus. How do I use the 12.5mm Combo B3 adapter to reach the Nikon standard?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Nikon F-mount requires a total back focus of 46.5mm. With your camera's 17.5mm and this adapter's 12.5mm, you have a combined 30mm (17.5 + 12.5). You would need to add an additional \u003cstrong\u003e16.5mm of M54 spacers\u003c\/strong\u003e between this adapter and your camera to achieve the correct total distance for a flat field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the QHYCCD Combo B3 adapter with a Canon EF lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This adapter is specifically for the Nikon F-mount bayonet. It is mechanically incompatible with Canon EF, Sony E, or other lens mounts. You would need a different adapter designed for the specific lens mount you intend to use.\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\u003eAdapter Type\u003c\/td\u003e\n\u003ctd\u003eLens Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Mount\u003c\/td\u003e\n\u003ctd\u003eNikon F-Mount (Female)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Connection\u003c\/td\u003e\n\u003ctd\u003eM54 x 0.75 (Male)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Thickness\u003c\/td\u003e\n\u003ctd\u003e12.5mm\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\"\u003eQHYCCD M54 to Nikon F Adapter (12.5mm)\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\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/qhyccd-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eQHYCCD Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"QHYCCD","offers":[{"title":"Default Title","offer_id":44967919878429,"sku":"QHY-020105","price":56.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/QHY-Adapter-Combo-B3__01467.1634308668.1280.1280.jpg?v=1684347038"},{"product_id":"qhyccd-m42m-nikon-10mm-adapter","title":"QHYCCD M42(M) Nikon 10mm Adapter","description":"\u003c!-- more --\u003eQHYCCD M42(M) Nikon 10mm Adapter","brand":"QHYCCD","offers":[{"title":"Default Title","offer_id":44967968768285,"sku":"QHY-020074","price":49.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/qhyccd-nikon-lens-adapter-m42-020074__75704.1642535735.1280.1280.jpg?v=1684347363"},{"product_id":"qhyccd-12-5mm-m42-nikon-f-lens-adapter","title":"QHYCCD M42\/M54 Threads-Canon EF\/Nikon F DSLR Lens Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects Canon EF and Nikon F mount DSLR lenses to astronomy cameras\u003c\/li\u003e\n\u003cli\u003eFeatures both M42 (T-thread) and M54 female threads for camera-side connection\u003c\/li\u003e\n\u003cli\u003eProvides 12.5mm of optical path length for Nikon F-mount lenses\u003c\/li\u003e\n\u003cli\u003eEnables wide-field astrophotography with high-quality camera optics\u003c\/li\u003e\n\u003cli\u003eAll-metal construction for a secure, flex-free connection\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\u003eM42\/M54 Threads-Canon EF\/Nikon F DSLR Lens Adapter\u003c\/h2\u003e\n      \u003cp\u003eThis M42\/M54 Threads-Canon EF\/Nikon F DSLR Lens Adapter lets you attach high-quality photographic lenses directly to your dedicated astronomy camera. It provides the standard 12.5mm back focus required for Nikon F-mount lenses to reach infinity focus and offers both M42 and M54 camera-side threads for broad compatibility with popular imaging systems.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eUse Canon EF \u0026amp; Nikon F Lenses with Your M42\/M54 Astro Camera\u003c\/h3\u003e\n      \u003cp\u003eUnlock the potential of your fast, wide-field DSLR lenses for astrophotography. This adapter allows you to bypass the telescope entirely, turning your sensitive astronomy camera and a telephoto lens into a powerful instrument for capturing large targets like the Andromeda Galaxy (M31) or the Rho Ophiuchi cloud complex.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWide-Field Imaging:\u003c\/strong\u003e Use lenses from 50mm to 300mm to frame enormous nebulae that are too large for most telescopes.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eFast Optics:\u003c\/strong\u003e Take advantage of the fast focal ratios (f\/2.8, f\/4) of photographic lenses to gather significant signal in shorter exposures.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eDual-Thread System:\u003c\/strong\u003e The adapter's female M42x0.75 (T-thread) and M54x0.75 threads ensure it can connect to a wide range of cameras and filter wheels without needing additional parts.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003ePrecision Spacing: The 12.5mm Standard for Nikon F-Mount Lenses\u003c\/h3\u003e\n      \u003cp\u003eAchieving a sharp, focused image across the entire frame depends on precise spacing between the lens and the sensor. This adapter is specifically machined to provide 12.5mm of optical path length, which is the exact distance required to bring a Nikon F-mount lens to infinity focus when connected to a camera with a standard T-thread (M42) interface.\u003c\/p\u003e\n      \u003cp\u003eWhile the adapter also physically mounts Canon EF lenses, the spacing is optimized for the Nikon F standard. Canon EF systems require a different back focus distance, which may necessitate additional spacers for optimal performance depending on your camera's sensor depth.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main purpose of the M42\/M54 DSLR Lens Adapter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThis adapter's primary function is to connect a \u003cstrong\u003eCanon EF\u003c\/strong\u003e or \u003cstrong\u003eNikon F\u003c\/strong\u003e mount photographic lens to a dedicated astronomy camera that uses \u003cstrong\u003eM42 (T-thread)\u003c\/strong\u003e or \u003cstrong\u003eM54\u003c\/strong\u003e threads. This allows you to use high-quality, fast camera lenses for wide-field astrophotography.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhich camera threads are compatible with this adapter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe adapter features female \u003cstrong\u003eM42x0.75\u003c\/strong\u003e (the standard T-thread) and \u003cstrong\u003eM54x0.75\u003c\/strong\u003e threads on the camera side. This dual-thread design provides flexibility for connecting to a wide variety of astronomy cameras, filter wheels, and other accessories.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 12.5mm spacing on this adapter work for Nikon F lenses?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNikon F-mount lenses require a specific distance from their mounting flange to the camera sensor to achieve infinity focus. This adapter provides exactly \u003cstrong\u003e12.5mm\u003c\/strong\u003e of spacing, which is the standard required to adapt these lenses to the common M42 T-thread system, ensuring sharp stars across the field.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this M42\/M54 DSLR Lens Adapter to image the North American Nebula (NGC 7000)?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, absolutely. The North American Nebula is a very large target, making it a perfect subject for this type of setup. Using this adapter with an astronomy camera and a telephoto lens (e.g., 135mm or 200mm) will allow you to frame the entire nebula complex beautifully.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter work correctly with my Canon EF 50mm f\/1.8 lens?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe adapter will physically mount a Canon EF lens like the 50mm f\/1.8. However, its 12.5mm thickness is optimized for the Nikon F-mount back focus standard. Canon EF lenses have a different back focus requirement, so you may need to add or remove spacers in your imaging train to achieve perfect focus, depending on your specific camera.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need other accessories to use this M42\/M54 DSLR Lens Adapter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eBesides the adapter, your lens, and your camera, you will need a method to mount the setup. Since you are not using a telescope, you'll typically mount the camera\/lens combination directly to your equatorial mount using a dovetail bar and a tripod ring for the lens or a clamp for the camera body.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eLens Mount Compatibility\u003c\/td\u003e\n\u003ctd\u003eCanon EF \/ Nikon F\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCamera Thread Compatibility\u003c\/td\u003e\n\u003ctd\u003eM42x0.75 (T-Thread) \/ M54x0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eOptical Path Length (for Nikon F)\u003c\/td\u003e\n\u003ctd\u003e12.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003eThis product is covered by the manufacturer's warranty. Please contact us for details regarding claims and support.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"QHYCCD","offers":[{"title":"Default Title","offer_id":52942983201053,"sku":"QHY-020098","price":49.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/QHYCCD-M42-M54-Threads-Canon-EF-Nikon-F-DSLR-Lens-Adapter-1_a607f7f4-a231-4a0c-b20a-f01d513e86a9.jpg?v=1789614784"},{"product_id":"qhyccd-swir-lens-for-qhy990","title":"QHYCCD SWIR Lens for QHY990\/991","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eEngineered for Short-Wave Infrared (SWIR) wavelengths\u003c\/li\u003e\n\u003cli\u003eOptimized for QHY990 and QHY991 SWIR cameras\u003c\/li\u003e\n\u003cli\u003eHigh-transmission coatings for the SWIR band\u003c\/li\u003e\n\u003cli\u003eDesigned for scientific and industrial imaging applications\u003c\/li\u003e\n\u003cli\u003eProvides a complete, integrated imaging solution with QHY SWIR 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\u003eSWIR Lens for QHY990\/991\u003c\/h2\u003e\n\u003cp\u003eThis SWIR Lens for QHY990\/991 is engineered to provide a high-transmission optical path specifically for the unique sensitivity range of Short-Wave Infrared sensors. It enables the full capabilities of cameras like the QHY990 and QHY991 by using specialized glass and coatings that are transparent to wavelengths where conventional optics fail, ensuring maximum signal reaches the sensor for scientific and industrial applications.\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 Transmission for the SWIR Spectrum\u003c\/h3\u003e\n\u003cp\u003eStandard camera lenses are designed for visible light; their glass and anti-reflection coatings absorb or reflect a significant portion of the SWIR spectrum. This lens is constructed with materials and multi-layer coatings specifically formulated to maximize throughput in the infrared, perfectly matching the operational waveband of QHY's SWIR sensors and preventing signal loss.\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 the QHY990 and QHY991\u003c\/h3\u003e\n\u003cp\u003eThis is not a general-purpose lens adapted for infrared use. It is purpose-built to integrate seamlessly with the QHY990 and QHY991 cameras, ensuring both mechanical compatibility and optical alignment. This system-level design approach guarantees that the lens delivers a clean, well-corrected image to the sensor, making it a reliable tool for demanding imaging tasks like agricultural analysis, silicon wafer inspection, or counterfeit detection.\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 a special SWIR lens for the QHY990\/991 camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eStandard optical glass used in conventional lenses is often opaque to Short-Wave Infrared (SWIR) light. This dedicated SWIR lens uses specialized glass and coatings that are highly transmissive in the infrared spectrum, ensuring that the maximum amount of light reaches your \u003cstrong\u003eQHY990 or QHY991 sensor\u003c\/strong\u003e for accurate measurements and high-contrast images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat applications benefit from using this SWIR lens with a QHY990 camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis lens is ideal for a range of scientific and industrial applications where SWIR imaging provides unique data. Key uses include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgricultural Analysis:\u003c\/strong\u003e Assessing crop health and moisture content.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Inspection:\u003c\/strong\u003e Seeing through silicon wafers or detecting material defects invisible to the human eye.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecurity \u0026amp; Surveillance:\u003c\/strong\u003e Imaging through haze, smoke, or fog.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArt \u0026amp; Document Analysis:\u003c\/strong\u003e Revealing underdrawings or alterations in historical artifacts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the SWIR Lens for QHY990\/991 also corrected for the visible spectrum?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis lens is optimized specifically for the SWIR band. While it may pass some visible light, its anti-reflection coatings and optical corrections are not designed for high-fidelity imaging in the visible spectrum. For best results, it should be used exclusively for its intended SWIR applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary advantage of using this lens with a QHY990 or QHY991?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe main advantage is system integration. This lens is designed to work as part of a complete solution with the \u003cstrong\u003eQHY990 and QHY991 cameras\u003c\/strong\u003e, ensuring correct mechanical fit, focus, and optical performance without the need for third-party adapters or guesswork. It unlocks the full potential of the camera's SWIR sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this lens work with SWIR cameras other than the QHY990\/991?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile designed and optimized for the QHY990 and QHY991, it may be compatible with other SWIR cameras that share the same mechanical interface and sensor format. However, performance is only guaranteed with the specified QHY models. Users should verify compatibility before purchasing for use with other equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use standard 1.25\" or 2\" astronomy filters with this SWIR lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eCompatibility with standard astronomy filters is not specified. Most astronomy filters are designed to block infrared light (IR-cut) or pass specific visible-light narrow bands, making them unsuitable for SWIR imaging. For SWIR applications, you would typically use specialized long-pass or band-pass filters designed for infrared wavelengths.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/qhyccd-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eQHYCCD Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"QHYCCD","offers":[{"title":"Default Title","offer_id":52942983627037,"sku":"QHY-070005","price":553.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/QHYCCD-SWIR-Lens-for-QHY990-991-1_fbcf5032-fd4b-4c8d-9ba7-eeb76fcb2786.jpg?v=1789614809"}],"url":"https:\/\/davidastro.com\/collections\/qhyccd-camera-lenses-and-adapters.oembed","provider":"David Astro","version":"1.0","type":"link"}