{"product_id":"baader-planetarium-adapter-s58-short-to-m54a-for-all-bds-diamond-steeltrack","title":"Baader Planetarium Adapter S58-short to M54a – for all BDS Diamond Steeltrack®","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdapts the Baader S58 drawtube thread to a female M54a thread\u003c\/li\u003e\n\u003cli\u003eDesigned for all Baader Diamond Steeltrack® (BDS) focusers\u003c\/li\u003e\n\u003cli\u003eEnables direct connection of M54-threaded imaging accessories\u003c\/li\u003e\n\u003cli\u003eLow-profile \"short\" design minimizes added backfocus\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\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\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\u003eAdapter S58-short to M54a – for all BDS Diamond Steeltrack®\u003c\/h2\u003e\n      \u003cp\u003eThis Baader Planetarium adapter directly converts the proprietary S58 dovetail thread on the drawtube of all Baader Diamond Steeltrack® (BDS) focusers to the widely used M54a female thread. It provides a secure, rigid connection point for attaching modern imaging train components, such as field flatteners, reducers, off-axis guiders, and filter wheels that rely on the M54 standard.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eS58 to M54a Thread Adaptation for Baader Steeltrack Focusers\u003c\/h3\u003e\n      \u003cp\u003eThe primary function of this adapter is to bridge the gap between your high-quality Baader Steeltrack focuser and the common M54 accessory ecosystem. By threading directly onto the focuser's S58 drawtube, it creates a robust, non-flexing female M54 port. The \"short\" designation indicates a design focused on consuming minimal backfocus, preserving precious optical path length for your imaging components.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the Baader S58-short to M54a adapter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eIts purpose is to convert the native S58 thread on a Baader Diamond Steeltrack® focuser drawtube to a standard female M54a thread. This allows you to securely attach accessories like correctors, filter wheels, and cameras that use the M54 connection standard.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhich focusers is this S58 to M54a adapter compatible with?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThis adapter is specifically designed for compatibility with \u003cstrong\u003eall Baader Planetarium Diamond Steeltrack® (BDS) focusers\u003c\/strong\u003e, including SCT, Refractor, and Newtonian versions which share the S58 drawtube thread.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of accessories can I attach to my Steeltrack focuser using this M54a adapter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYou can attach any astronomical accessory that features a male M54 thread. This commonly includes:\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eField Flatteners and Reducers:\u003c\/strong\u003e Many modern correctors use M54 threads for a wide, unvignetted optical path.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eFilter Wheels and Drawers:\u003c\/strong\u003e Allows direct connection to popular M54-based filter systems.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eOff-Axis Guiders (OAGs):\u003c\/strong\u003e Provides a solid connection point for M54 OAG bodies.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eCamera Adapters:\u003c\/strong\u003e Connects to various camera mounting systems that terminate in an M54 thread.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs this the correct adapter for connecting a ZWO EFW with an M54 interface to my Baader Steeltrack?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes. If your ZWO Electronic Filter Wheel (EFW) or other imaging accessory has a male M54 thread for connection to the telescope, this adapter will provide the necessary female M54 port on your Baader Diamond Steeltrack® focuser.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the S58-short 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 adapter is designated as \"short,\" meaning it is engineered to be as low-profile as possible to conserve backfocus. While any adapter necessarily adds some length, this model is designed to minimize that addition, preserving critical space for your imaging train components.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install the Baader S58-short to M54a adapter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eInstallation is straightforward. You simply unthread any existing adapter from the end of your Baader Diamond Steeltrack® focuser's drawtube to expose the male S58 thread. Then, you carefully thread the S58-short to M54a adapter on until it is snug and secure.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eS58-short to M54a Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eAll Baader Diamond Steeltrack® (BDS) Focusers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Thread (Focuser Side)\u003c\/td\u003e\n\u003ctd\u003eS58 Dovetail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Thread (Accessory Side)\u003c\/td\u003e\n\u003ctd\u003eM54a (Female)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003e45\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType of Adapter\u003c\/td\u003e\n\u003ctd\u003eReducing Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM54 x 0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdapters Family\u003c\/td\u003e\n\u003ctd\u003eM54 System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n    \u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eAdapter S58-short to M54a\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":52913216323869,"sku":"BAA-2957209","price":51.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-Adapter-S58-short-to-M54a-for-all-BDS-Diamond-Steeltrack-1_3704492d-dd89-4218-bc6b-2cfaacecbf6c.jpg?v=1789088311","url":"https:\/\/davidastro.com\/fr\/products\/baader-planetarium-adapter-s58-short-to-m54a-for-all-bds-diamond-steeltrack","provider":"David Astro","version":"1.0","type":"link"}