{"product_id":"baader-planetarium-m48-heavy-duty-quick-change-system","title":"Baader Planetarium Baader M48 Heavy-Duty Quick Change System","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eEnables rapid swapping of M48-threaded accessories\u003c\/li\u003e\n\u003cli\u003eHeavy-duty design securely holds cameras and filter wheels\u003c\/li\u003e\n\u003cli\u003eRotation-proof dovetail connection prevents accessory sag or shift\u003c\/li\u003e\n\u003cli\u003eEnsures repeatable and precise accessory alignment\u003c\/li\u003e\n\u003cli\u003ePart of the comprehensive Baader M48 adapter system\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\u003eBaader M48 Heavy-Duty Quick Change System\u003c\/h2\u003e\n      \u003cp\u003eThe Baader M48 Heavy-Duty Quick Change System replaces the flexure and rotation risk of standard M48 threads with a secure, repeatable dovetail lock. This system is engineered to carry heavy imaging loads, such as cooled cameras and filter wheels, without any possibility of sagging or unwanted rotation during an exposure. It provides a robust, zero-play connection that allows you to swap accessories in seconds, maintaining precise alignment every time.\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\u003eThe Dovetail Locking Mechanism: Zero-Flexure, Repeatable Connection\u003c\/h3\u003e\n      \u003cp\u003eStandard M48 threads can loosen under the weight of a heavy camera, causing tilt and ruining sub-exposures. The Baader Heavy-Duty Quick Change System solves this by using a male\/female dovetail design. This mechanical lock bears the load, completely preventing rotation and ensuring your imaging train remains perfectly orthogonal to the optical axis.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eRotation-Proof Security:\u003c\/strong\u003e The dovetail interface physically prevents the payload from twisting, a critical feature for long exposures and automated sequences.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eRepeatable Alignment:\u003c\/strong\u003e Accessories return to the exact same position every time they are attached, making it ideal for mosaics or using calibration frames taken on a different night.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Construction:\u003c\/strong\u003e Designed specifically for the demands of modern astrophotography, it provides a stable foundation for your most valuable equipment.\u003c\/li\u003e\n      \u003c\/ul\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\u003eStreamlined Imaging Workflow: Fast Swaps for Cameras and Filter Wheels\u003c\/h3\u003e\n      \u003cp\u003eThis system transforms your setup and breakdown process. Instead of tediously threading and unthreading components in the dark, you can switch between your primary imaging camera, a guide camera, or a visual accessory like a Baader ClickLock clamp with a simple, secure action. This dramatically improves efficiency at the telescope, saving valuable time under clear skies.\u003c\/p\u003e\n       \u003cp\u003eA key trade-off is the addition of optical length to your imaging train. While minimal, this added distance must be factored into your back-focus calculations, especially when working with reducers or correctors that have strict spacing requirements.\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 Baader M48 Quick Change System designed for?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe Baader M48 Heavy-Duty Quick Change System is designed to provide a secure, non-rotating, and repeatable connection for heavy M48-threaded accessories like cooled astronomy cameras, filter wheels, and off-axis guiders. It allows you to swap components quickly without losing alignment or risking thread-induced tilt.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the M48 Quick Change System prevent camera rotation?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eIt uses a \u003cstrong\u003eprecision dovetail mechanism\u003c\/strong\u003e instead of relying on thread friction. The male change ring seats into the female changer base, and this physical interlock carries the weight and prevents any rotational movement, ensuring your camera's orientation remains fixed throughout an imaging session.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader M48 system with accessories from other brands?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes. As long as your camera, filter wheel, or other accessory has a standard M48 x 0.75 female thread, you can attach a Baader M48 Change Ring to it. This makes the system compatible with a wide range of equipment across the astronomy market.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Baader M48 system a good choice for a remote observatory?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eAbsolutely. The system's key benefit is its \u003cstrong\u003erepeatability\u003c\/strong\u003e. If you need to remove an imaging train for maintenance and then reinstall it, this system ensures it goes back in the exact same orientation and spacing. This is crucial for remote setups where you rely on calibration frames (darks, flats) being perfectly aligned.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat components make up the Baader M48 Heavy-Duty Quick Change System?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe complete system consists of two parts that work together:\n    \u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eThe M48 Changer (Base):\u003c\/strong\u003e This part typically attaches to your telescope or focuser.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eThe M48 Change Ring (Dovetail):\u003c\/strong\u003e This part threads onto your camera or accessory.\u003c\/li\u003e\n    \u003c\/ul\u003e\n    This product includes both components (#2958590 \u0026amp; #2958595). Additional change rings can be purchased separately for other accessories.\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this M48 system improve workflow with a filter wheel and camera on an SCT?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eOn a Schmidt-Cassegrain Telescope (SCT), you might switch between a deep-sky setup (reducer, camera, filter wheel) and a planetary setup (Barlow, ADC, high-speed camera). Instead of unthreading the entire heavy stack, you can attach a change ring to each setup. This allows you to lift the entire imaging train off as one block and replace it with the other in seconds, maintaining perfect alignment with the SCT's optical axis.\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\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.07\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScrew Type\u003c\/td\u003e\n\u003ctd\u003eLarge clamping screw with brass thrust piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Brands\u003c\/td\u003e\n\u003ctd\u003eAstro T-2, Baader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamping System\u003c\/td\u003e\n\u003ctd\u003eDovetail clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003e44 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e59 x 75mm\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\u003e15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eM48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eM48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdapters Family\u003c\/td\u003e\n\u003ctd\u003eM48 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  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\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 Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":52913157931293,"sku":"BAA-2958593","price":145.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-M48-Heavy-Duty-Quick-Change-System-Changer-and-change-ring-1_76e22cdb-8e83-4066-a37e-fa4b466c1bc8.jpg?v=1789086877","url":"https:\/\/davidastro.com\/en-us\/products\/baader-planetarium-m48-heavy-duty-quick-change-system","provider":"David Astro","version":"1.0","type":"link"}