{"product_id":"celestron-m42-spacer-ring-kit","title":"Celestron M42 Spacer Ring Kit","description":"\u003cp\u003e\u003cspan\u003eTo achieve the best astroimages, it is important to attain the proper back-focus distance for your camera relative to the telescope it is being used with. If the back-focus distance your camera consumes is not exact, the performance at the corners of full frame imaging sensors will suffer—stars will appear elongated and not as pinpoints.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eExample:\u003c\/strong\u003e RASA 8 with a ZWO ASI 183 MC PRO camera\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRequired back-focus distance for RASA 8 with included M42 camera adapter: 25mm\u003c\/li\u003e\n\u003cli\u003eBack-focus consumed by ZWO ASI 183 MC PRO camera: 17.5mm\u003c\/li\u003e\n\u003cli\u003eTo achieve equal back-focus distance, a 7.5mm M42 spacer ring is required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e Celestron’s M42 Spacer Ring kit includes three different length spacer rings to achieve the proper back-focus distance with our popular Celestron optical tubes and T-thread camera adapters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAdjusts back-focus between your camera and telescope for the best astroimaging results\u003c\/li\u003e\n\u003cli\u003eKit includes 3 spacer rings of different lengths (7.5mm, 12mm, 30mm)\u003c\/li\u003e\n\u003cli\u003eThreads to your T-Ring and T-Adapter with standard male and female T-Threads\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":48326225756331,"sku":"93618","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0799\/8944\/0683\/files\/93618_M42_Spacer_Ring_Kit_01.webp?v=1792495401","url":"https:\/\/astronomycity.com\/products\/celestron-m42-spacer-ring-kit","provider":"Astronomy City","version":"1.0","type":"link"}