{"product_id":"player-one-cs-to-1-25-adapter-cs125","title":"Player One CS to 1.25\" Adapter (CS125)","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Player One CS-1.25 Adapter is a machined metal adapter that connects CS-mount hardware to the 1.25-inch thread standard. It carries CS female threads on one side and M28.5 × 0.6 male threads on the other, so a CS-mount lens or component can thread onto a 1.25-inch camera or accessory. Player One lists its length as 5 mm plus 2.5 mm of thread (7.5 mm total).\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you use a CS-mount lens and want to mount it to a 1.25-inch threaded camera or imaging train — for example, pairing a CS lens with a guide or all-sky camera.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCS female to M28.5 male:\u003c\/strong\u003e converts a CS-mount interface to the M28.5 × 0.6 (1.25-inch) thread.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact length:\u003c\/strong\u003e 5 mm body plus 2.5 mm of engaged thread (7.5 mm total).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal construction:\u003c\/strong\u003e machined metal body for a rigid, repeatable join.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical only:\u003c\/strong\u003e no optical elements and no electronic connection.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCS-mount lenses:\u003c\/strong\u003e attach a CS lens to a 1.25-inch threaded camera.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-sky and guide cameras:\u003c\/strong\u003e adapt CS-mount optics onto 1.25-inch camera bodies and trains.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility \u0026amp; Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eOne end is CS female; the other is M28.5 × 0.6 male, the standard 1.25-inch filter\/accessory thread. It converts between those two standards only. If you are not sure whether your lens is CS or C mount, or how it will reach focus, send us your setup and we will confirm the fit.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical adapter only:\u003c\/strong\u003e it changes the thread interface — there are no optics and no electronic communication through it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCS to 1.25-inch only:\u003c\/strong\u003e it does not adapt other thread standards.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — it threads directly between a CS-mount part and a 1.25-inch (M28.5) part with no tools.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat threads does it have?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCS female on one side and M28.5 × 0.6 male on the other.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it have any optics?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It is a mechanical thread adapter only.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a compact metal adapter that takes a CS-mount interface to the M28.5 × 0.6 (1.25-inch) thread, for putting CS lenses on 1.25-inch cameras and trains.\u003c\/p\u003e","brand":"Player One Astronomy","offers":[{"title":"Default Title","offer_id":53834274340975,"sku":"CS125","price":14.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/CS-ADAPTER.jpg?v=1784239593","url":"https:\/\/ontariotelescope.com\/products\/player-one-cs-to-1-25-adapter-cs125","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}