{"product_id":"baader-planetarium-m54i-heavy-duty-quick-changer-with-s54i-dovetail-receptor","title":"Baader Planetarium M54i Heavy-Duty Quick Changer with S54i Dovetail receptor","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eSecurely mounts and rotates heavy cameras and accessories\u003c\/li\u003e\n\u003cli\u003eM54i female thread for telescope-side connection\u003c\/li\u003e\n\u003cli\u003eS54i dovetail receptor for a rigid, rotation-proof lock\u003c\/li\u003e\n\u003cli\u003eEnables precise 360° rotation for framing\u003c\/li\u003e\n\u003cli\u003eMaintains optical alignment with a zero-flexure design\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\u003eM54i Heavy-Duty Quick Changer with S54i Dovetail receptor\u003c\/h2\u003e\n\u003cp\u003eThe Baader M54i Heavy-Duty Quick Changer with S54i Dovetail receptor provides a robust, zero-flexure solution for securely mounting and precisely rotating heavy imaging trains. Designed for imagers using large sensors, filter wheels, or binoviewers, this system eliminates sag and maintains perfect optical alignment, ensuring your components can be quickly attached, detached, and framed without compromising rigidity.\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\u003eS54i Dovetail Lock: Zero-Flexure for Heavy Payloads\u003c\/h3\u003e\n\u003cp\u003eAt the core of the system is the S54i dovetail receptor, which creates a solid, rotation-proof mechanical lock. Unlike simple threaded connections that can loosen under load, this design ensures that heavy cameras, off-axis guiders, and other accessories are held rigidly in place. This positive-locking mechanism prevents any shift or tilt, which is critical for maintaining flat fields and sharp stars during long exposures.\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\u003e360° Rotation for Precise Image Framing\u003c\/h3\u003e\n\u003cp\u003eThe M54i Quick Changer allows for smooth and easy 360° rotation of your entire imaging assembly. This capability is essential for composing your astrophotos, allowing you to perfectly frame targets like the Veil Nebula (NGC 6960) or align your guide camera with a suitable star without disassembling your setup. Once framed, the locking mechanism ensures the new orientation is held without any play.\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 advantage of the M54i Quick Changer's dovetail system?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eS54i dovetail receptor\u003c\/strong\u003e provides a secure, mechanical lock that is \"rotation-proof.\" This means that unlike a standard threaded connection that can unscrew slightly under the weight of a heavy camera, the dovetail prevents any unwanted rotation or flexure, ensuring your entire imaging train remains perfectly aligned with the telescope's optical axis.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the M54i Quick Changer support a heavy camera and filter wheel on an SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The M54i Quick Changer is specifically designed as a heavy-duty solution. Its rigid, zero-flexure design is ideal for supporting the weight of modern CMOS cameras, large filter wheels, and off-axis guiders, making it an excellent choice for Schmidt-Cassegrain telescopes and other instruments where backfocus is critical and sag must be eliminated.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the M54i Quick Changer help when imaging a target like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor large targets like the Andromeda Galaxy (M31), precise framing is crucial to fit the object within your sensor's field of view. The M54i Quick Changer allows you to rotate your entire camera assembly smoothly to achieve the perfect composition. After framing, you can lock it down securely without losing your alignment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the thread specification for the M54i Heavy-Duty Quick Changer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis component uses the M54 thread standard. The telescope side features an M54 female (internal) thread, making it compatible with focusers and adapters that have a corresponding M54 male thread.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the M54i Heavy-Duty Quick Changer with a binoviewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the quick-change system is well-suited for binoviewers. It provides a secure connection that can handle the weight and leverage of a binoviewer and two eyepieces, while also allowing you to easily rotate the assembly to a comfortable viewing angle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the \"quick change\" feature of the M54i system work?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe system consists of two parts: the S54i dovetail receptor (this product) and a corresponding S54i dovetail ring (sold separately) that attaches to your camera or accessory. The ring slides into the receptor and is locked in place, allowing for fast and secure attachment or detachment of your equipment without having to thread and unthread components in the dark.\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\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eM54i Heavy-Duty Quick Changer with S54i Dovetail receptor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.05\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Adaptable\u003c\/td\u003e\n\u003ctd\u003eM54 thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScrew Type\u003c\/td\u003e\n\u003ctd\u003eLarge clamping screw with brass pressure plate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamping System\u003c\/td\u003e\n\u003ctd\u003eScrew clamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003e54 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e64 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType of Adapter\u003c\/td\u003e\n\u003ctd\u003eSame-Thread Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003efor heavy-duty accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eS54\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (lens 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\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\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":52913160421661,"sku":"BAA-2958760","price":153.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-M54i-Heavy-Duty-Quick-Changer-with-S54i-Dovetail-receptor-1_73a23c44-0dce-4fc8-973c-98e30f070d44.jpg?v=1789086948","url":"https:\/\/davidastro.com\/products\/baader-planetarium-m54i-heavy-duty-quick-changer-with-s54i-dovetail-receptor","provider":"David Astro","version":"1.0","type":"link"}