{"product_id":"player-one-cs-m42-adapter","title":"Player One CS-M42 Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects CS-Mount Female Threads to M42 Male Threads\u003c\/li\u003e\n\u003cli\u003eFits CS-Mount Lenses to Cameras with an M42 (T2) Front Thread\u003c\/li\u003e\n\u003cli\u003eFits the Player One 2.1mm and 2.5mm All-Sky Lenses\u003c\/li\u003e\n\u003cli\u003e6.5mm Long, All-Metal 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\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\u003eCS-M42 Adapter\u003c\/h2\u003e\n\u003cp\u003eThis CS-M42 adapter mounts a CS-mount lens on a camera with an M42x0.75mm (T2) female front thread: its male M42 thread screws into the camera and the lens threads into its female CS-mount thread. Designed for Player One planetary cameras, it lets you fit a CS lens for wide-field or all-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\u003eFit a CS-Mount Lens to Your T2-Thread Camera\u003c\/h3\u003e\n\u003cp\u003eMany compact wide-angle and fisheye lenses, particularly those made for industrial or security cameras, use the CS-mount standard. It gives an M42 (T2) camera a female CS-mount thread, so CS lenses such as the Player One 2.1mm and 2.5mm all-sky lenses can be fitted.\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\u003eAll-Sky and Wide-Field Imaging\u003c\/h3\u003e\n\u003cp\u003eWith a short focal length CS lens fitted, such as the Player One 2.1mm or 2.5mm lens, your planetary or guide camera can record a wide or all-sky field for meteor, aurora and cloud monitoring.\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 function of the CS-M42 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe CS-M42 adapter connects a CS-mount lens to a camera with an M42x0.75mm (T2) female front thread. Its male M42 thread screws into the camera and the lens threads into its female CS-mount thread, for all-sky or wide-field use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use a C-mount lens with this CS-M42 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, with a 5mm spacer. C-mount and CS-mount have the same thread diameter and pitch but different flange-to-sensor distances (17.526mm for C-mount, 12.526mm for CS-mount), so a C-mount lens needs the Player One CS-C 5mm Adapter between it and the CS-M42 adapter to reach focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich cameras is the CS-M42 adapter designed for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003ePlayer One designed it for its planetary cameras, which have an M42x0.75 female front thread. With a CS lens fitted, the camera becomes a wide-field or all-sky camera; for imaging through a telescope you remove the adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the CS-M42 adapter allow me to attach my camera to a telescope focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. Its male T2 thread screws into the camera, leaving only a female CS-mount thread for a lens. To use the camera on a telescope, remove the adapter and fit the camera's 1.25\" nosepiece or another M42 accessory.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this adapter add significant length to the optical path?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe CS-M42 adapter is 6.5mm long. Because it holds a CS lens rather than sitting in a telescope imaging train, its length does not enter a focal reducer or off-axis guider back-focus calculation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat types of lenses use a CS-mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eCS-mount lenses are common on security, industrial and all-sky cameras, including short focal length fisheye lenses. The CS-M42 adapter lets you use them on an astronomy camera with an M42 front 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\u003eFemale Thread\u003c\/td\u003e\n\u003ctd\u003eCS-Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMale Thread\u003c\/td\u003e\n\u003ctd\u003eM42x0.75mm (T2-Thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKind\u003c\/td\u003e\n\u003ctd\u003eLens adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (added light path)\u003c\/td\u003e\n\u003ctd\u003e6.5 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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003ca title=\"Player One 2-Year Warranty\" href=\"https:\/\/davidastro.com\/pages\/player-one-warranty-policy\" target=\"_blank\"\u003ePlayer One 2-Year Warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Player One","offers":[{"title":"Default Title","offer_id":52913432264989,"sku":"POA-CSM42","price":12.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PlayerOne-CS-M42-adapter-1_2abaea9c-1407-4ed2-bfb1-2c498900476d.jpg?v=1789091120","url":"https:\/\/davidastro.com\/en-int\/products\/player-one-cs-m42-adapter","provider":"David Astro","version":"1.0","type":"link"}