{"product_id":"dcs-m54-0-75-male-to-m48-0-75-female-adapter-17-5-mm","title":"DCS M54 × 0.75 Male to M48 × 0.75 Female Adapter – 17.5 mm","description":"\u003cdiv class=\"dcs-m54m-m48f-175\" style=\"color:#173442;font-size:16px;line-height:1.7;max-width:100%;box-sizing:border-box;overflow-wrap:break-word;\"\u003e\n\u003csection style=\"background:#102d3b;color:#fff;border-radius:16px;padding:28px;margin:0 0 22px;box-sizing:border-box;\"\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;align-items:center;gap:24px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px;min-width:0;\"\u003e\n\u003cp style=\"margin:0 0 12px;color:#82dfe1;font-size:12px;font-weight:700;letter-spacing:1.5px;\"\u003eDARK CLEAR SKIES · IMAGING ADAPTERS\u003c\/p\u003e\n\u003ch2 style=\"margin:0 0 16px;color:#fff;font-size:clamp(26px,3.2vw,36px);line-height:1.18;\"\u003eConnect M54 to M48.\u003cbr\u003eAccount for 17.5 mm.\u003c\/h2\u003e\n\u003cp style=\"margin:0;color:#e5eff2;\"\u003eBring two different threaded connections together while adding a defined spacing distance. The \u003cstrong style=\"color:#fff;\"\u003eDCS M54 Male to M48 Female Adapter\u003c\/strong\u003e combines an \u003cstrong style=\"color:#fff;\"\u003eM54 × 0.75 external thread\u003c\/strong\u003e with an \u003cstrong style=\"color:#fff;\"\u003eM48 × 0.75 internal thread\u003c\/strong\u003e and a specified \u003cstrong style=\"color:#fff;\"\u003e17.5 mm back-focus contribution\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure style=\"flex:1 1 240px;min-width:0;margin:0;background:#fff;border-radius:12px;padding:12px;box-sizing:border-box;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/dcs-m54m-m48f-17-5mm-adapter-clean-front.jpg?v=1794150734\" alt=\"Dark Clear Skies M54 male to M48 female adapter showing the branded body, internal thread and ridged collar\" width=\"966\" height=\"766\" loading=\"lazy\" style=\"display:block;width:100%;max-width:100%;height:auto;margin:0;border:0;\"\u003e\n\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;margin:0 0 28px;\"\u003e\n\u003cdiv style=\"flex:1 1 150px;min-width:0;background:#eef6f7;border:1px solid #dce8eb;border-radius:10px;padding:16px;box-sizing:border-box;\"\u003e\n\u003cstrong style=\"display:block;color:#102d3b;font-size:22px;line-height:1.3;\"\u003eM54 × 0.75\u003c\/strong\u003e\u003cspan style=\"display:block;margin-top:6px;font-size:14px;\"\u003eMale · external thread\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 150px;min-width:0;background:#eef6f7;border:1px solid #dce8eb;border-radius:10px;padding:16px;box-sizing:border-box;\"\u003e\n\u003cstrong style=\"display:block;color:#102d3b;font-size:22px;line-height:1.3;\"\u003eM48 × 0.75\u003c\/strong\u003e\u003cspan style=\"display:block;margin-top:6px;font-size:14px;\"\u003eFemale · internal thread\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 150px;min-width:0;background:#eef6f7;border:1px solid #dce8eb;border-radius:10px;padding:16px;box-sizing:border-box;\"\u003e\n\u003cstrong style=\"display:block;color:#102d3b;font-size:22px;line-height:1.3;\"\u003e17.5 mm\u003c\/strong\u003e\u003cspan style=\"display:block;margin-top:6px;font-size:14px;\"\u003eSpecified back-focus length\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection style=\"margin:0 0 28px;\"\u003e\n\u003ch2 style=\"margin:0 0 12px;color:#102d3b;font-size:25px;line-height:1.3;\"\u003eThread conversion and spacing in one component\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eChoose this adapter when your imaging setup needs to join an \u003cstrong\u003eM54 × 0.75 female connection\u003c\/strong\u003e to an \u003cstrong\u003eM48 × 0.75 male connection\u003c\/strong\u003e, with 17.5 mm allowed for the adapter in your spacing calculation.\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eIt can form part of a camera, filter-wheel, filter-drawer or telescope-accessory connection where both interfaces match. The ridged outer collar provides a handhold when fitting or removing the adapter. This is a mechanical connection and spacer, not an optical reducer or Barlow lens.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection style=\"margin:0 0 28px;background:#f7fafb;border:1px solid #dce8eb;border-radius:12px;padding:22px;box-sizing:border-box;\"\u003e\n\u003cp style=\"margin:0 0 7px;color:#08717c;font-size:12px;font-weight:700;letter-spacing:1.2px;\"\u003eCHECK BOTH MATING THREADS\u003c\/p\u003e\n\u003ch2 style=\"margin:0 0 14px;color:#102d3b;font-size:25px;line-height:1.3;\"\u003eThe right diameter. The right pitch. The right ends.\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;font-size:15px;line-height:1.5;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#102d3b;\"\u003e\n\u003cth scope=\"col\" style=\"text-align:left;padding:12px;color:#fff;\"\u003eOn this adapter\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"text-align:left;padding:12px;color:#fff;\"\u003eConnects to\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:12px;border-bottom:1px solid #dce8eb;\"\u003eM54 × 0.75 male\u003c\/th\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #dce8eb;\"\u003eM54 × 0.75 female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:12px;border-bottom:1px solid #dce8eb;\"\u003eM48 × 0.75 female\u003c\/th\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #dce8eb;\"\u003eM48 × 0.75 male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"margin:15px 0 0;\"\u003eThe \u003cstrong\u003e0.75 mm pitch applies to both threads\u003c\/strong\u003e. M54 × 1 and M48 × 1 are different fittings. Check the equipment specifications, thread engagement and clearance rather than relying on diameter alone.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003cfigure style=\"margin:0 0 28px;padding:18px;background:#fff;border:1px solid #dce8eb;border-radius:12px;box-sizing:border-box;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/dcs-m54m-m48f-17-5mm-adapter-clean-thread-view.jpg?v=1794150776\" alt=\"Reverse view of the DCS adapter showing the external M54 thread, internal M48 thread and ridged collar\" width=\"980\" height=\"791\" loading=\"lazy\" style=\"display:block;width:100%;max-width:100%;height:auto;max-height:380px;object-fit:contain;margin:0;border:0;\"\u003e\n\u003cfigcaption style=\"margin:12px 0 0;text-align:center;color:#4b6570;font-size:14px;\"\u003eThe reverse view shows the external threaded end and the internal connection.\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003csection style=\"margin:0 0 28px;\"\u003e\n\u003ch2 style=\"margin:0 0 12px;color:#102d3b;font-size:25px;line-height:1.3;\"\u003eInclude 17.5 mm in your back-focus calculation\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 16px;\"\u003eStart with the distance specified for your telescope, reducer or field flattener, measured from its stated reference surface to the camera sensor. Account for the camera’s sensor distance and all other accessories before selecting the remaining spacer length.\u003c\/p\u003e\n\u003cdiv style=\"background:#102d3b;color:#fff;border-radius:12px;padding:22px;box-sizing:border-box;\"\u003e\n\u003cp style=\"margin:0 0 9px;color:#82dfe1;font-size:12px;font-weight:700;letter-spacing:1.2px;\"\u003eWORKED EXAMPLE · NOT A UNIVERSAL REQUIREMENT\u003c\/p\u003e\n\u003cp style=\"margin:0 0 10px;color:#fff;font-size:clamp(22px,3vw,29px);line-height:1.35;font-weight:700;\"\u003e55 mm − 37.5 mm = 17.5 mm\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#e5eff2;font-size:15px;\"\u003eA setup requiring 55 mm, with 37.5 mm already accounted for, needs another 17.5 mm. This adapter supplies that specified contribution when the mating threads and clearances are suitable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin:14px 0 0;color:#4b6570;font-size:14px;\"\u003eThe stated 17.5 mm is the back-focus contribution, not a claim about the overall end-to-end length including protruding threads. Follow any filter-related spacing guidance for your optical system and check the assembled distance.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection style=\"margin:0 0 28px;\"\u003e\n\u003ch2 style=\"margin:0 0 14px;color:#102d3b;font-size:25px;line-height:1.3;\"\u003eSpecifications at a glance\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;font-size:15px;line-height:1.5;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background:#eef6f7;\"\u003e\n\u003cth scope=\"row\" style=\"width:42%;text-align:left;vertical-align:top;padding:12px;border-bottom:1px solid #dce8eb;\"\u003eBrand\u003c\/th\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;border-bottom:1px solid #dce8eb;\"\u003eDark Clear Skies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"text-align:left;vertical-align:top;padding:12px;border-bottom:1px solid #dce8eb;\"\u003eProduct type\u003c\/th\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;border-bottom:1px solid #dce8eb;\"\u003eThread adapter with fixed spacing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#eef6f7;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;vertical-align:top;padding:12px;border-bottom:1px solid #dce8eb;\"\u003eExternal thread\u003c\/th\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;border-bottom:1px solid #dce8eb;\"\u003eM54 × 0.75 mm · male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"text-align:left;vertical-align:top;padding:12px;border-bottom:1px solid #dce8eb;\"\u003eInternal thread\u003c\/th\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;border-bottom:1px solid #dce8eb;\"\u003eM48 × 0.75 mm · female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#eef6f7;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;vertical-align:top;padding:12px;border-bottom:1px solid #dce8eb;\"\u003eSpecified back-focus length\u003c\/th\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;border-bottom:1px solid #dce8eb;\"\u003e17.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"text-align:left;vertical-align:top;padding:12px;border-bottom:1px solid #dce8eb;\"\u003eAppearance\u003c\/th\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;border-bottom:1px solid #dce8eb;\"\u003eBlack, with Dark Clear Skies branding and ridged outer collar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#eef6f7;\"\u003e\n\u003cth scope=\"row\" style=\"text-align:left;vertical-align:top;padding:12px;border-bottom:1px solid #dce8eb;\"\u003eSKU\u003c\/th\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;border-bottom:1px solid #dce8eb;overflow-wrap:anywhere;\"\u003eDCS-M54M-M48F-175\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/section\u003e\n\u003csection style=\"margin:0 0 28px;\"\u003e\n\u003ch2 style=\"margin:0 0 12px;color:#102d3b;font-size:25px;line-height:1.3;\"\u003eFit by hand and check before use\u003c\/h2\u003e\n\u003cp style=\"margin:0;\"\u003eKeep the components square, start each thread gently and stop if the connection binds. Never force a mismatched fitting. Check that the joints seat correctly, the complete assembly has adequate clearance and the resulting spacing suits your equipment.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection style=\"background:#eef6f7;border-radius:12px;padding:22px;box-sizing:border-box;\"\u003e\n\u003ch2 style=\"margin:0 0 10px;color:#102d3b;font-size:22px;line-height:1.3;\"\u003eWhat’s included\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 16px;\"\u003e1 × Dark Clear Skies M54 × 0.75 male to M48 × 0.75 female adapter, with a specified 17.5 mm back-focus contribution. Cameras and other imaging accessories are not included.\u003c\/p\u003e\n\u003ca href=\"\/collections\/adapters-extension-tubes\" style=\"display:inline-block;background:#08717c;color:#fff;text-decoration:none;font-weight:700;font-size:15px;line-height:1.5;border-radius:7px;padding:12px 16px;max-width:100%;box-sizing:border-box;\"\u003eExplore adapters \u0026amp; extension tubes →\u003c\/a\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Dark Clear Skies","offers":[{"title":"Default Title","offer_id":55730189599096,"sku":"DCS-M54M-M48F-175","price":24.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/dcs-m54m-m48f-17-5mm-adapter-clean-front.jpg?v=1794150734","url":"https:\/\/www.darkclearskies.co.uk\/products\/dcs-m54-0-75-male-to-m48-0-75-female-adapter-17-5-mm","provider":"Dark Clear Skies ","version":"1.0","type":"link"}