{"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\u003eAdapts Small-Format Cameras to Standard T2 Accessories\u003c\/li\u003e\n\u003cli\u003eEnables Use of Filter Wheels and Focal Reducers\u003c\/li\u003e\n\u003cli\u003eLow-Profile Design for Minimal Back-Focus Consumption\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 provides the essential connection between cameras using the CS-mount female thread and the vast ecosystem of astronomical accessories built around the M42x0.75mm T2 male thread. It allows you to integrate small-format guide or planetary cameras into a standard imaging train, opening up compatibility with filter wheels, off-axis guiders, and focal reducers.\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\u003eBridge Your CS-Mount Camera to the T2-Thread Standard\u003c\/h3\u003e\n\u003cp\u003eMany specialized, high-frame-rate cameras, particularly those adapted from industrial or security applications, use the compact CS-mount standard. This adapter physically converts that female CS-thread into a male M42 (T2) thread, the universal standard for connecting imaging components in amateur astronomy.\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\u003eIntegrate Filter Wheels, Reducers, and More\u003c\/h3\u003e\n\u003cp\u003eBy making your camera T2-compatible, this adapter unlocks critical imaging capabilities. You can now place a filter wheel directly in front of your camera for monochrome imaging or attach it to a focal reducer or coma corrector that terminates in standard M42 threads, allowing for wider fields of view and faster imaging systems.\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 primary function of the \u003cstrong\u003eCS-M42 adapter\u003c\/strong\u003e is to convert the female CS-thread on a camera body to a male M42x0.75mm thread, commonly known as a T2-thread. This allows you to attach your CS-mount camera to standard astronomy accessories like filter wheels, off-axis guiders, and reducers that use the T2 standard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this CS-M42 adapter with a C-mount camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter is specifically for CS-mount threads. While C-mount and CS-mount have the same thread diameter and pitch, they have different flange-to-sensor distances (17.526mm for C-mount, 12.526mm for CS-mount). Using this adapter with a C-mount camera would likely prevent you from reaching focus without additional spacers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the CS-M42 adapter help with planetary imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor planetary imaging, this adapter allows you to connect your CS-mount camera to accessories like an atmospheric dispersion corrector (ADC) or a filter wheel with LRGB or IR-pass filters. These components almost universally use T2-threads, making the CS-M42 adapter essential for building a planetary imaging train.\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\u003eIndirectly, yes. The adapter provides a male T2-thread. From there, you would typically add a T2-to-1.25\" or T2-to-2\" nosepiece to insert the camera assembly into your telescope's focuser. This adapter is the first step in making that connection possible.\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\u003eWhile any adapter adds some length, adapters like the CS-M42 are designed to be as \"thin\" or low-profile as possible to consume minimal back-focus. This is critical for systems with limited back-focus, such as when using a focal reducer or an off-axis guider.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat types of cameras typically use a CS-mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eCS-mounts are common on small-format, high-speed cameras often used for autoguiding, planetary imaging, or all-sky cameras. These are frequently based on industrial or security sensors and require an adapter like the CS-M42 to be used with standard astronomical equipment.\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\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-us\/products\/player-one-cs-m42-adapter","provider":"David Astro","version":"1.0","type":"link"}