{"product_id":"baader-planetarium-m48-metal-dustcap-with-m48i-female-thread","title":"Baader Planetarium M48 Metal Dustcap with M48i female thread","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eSecurely Seals Male M48 Threads\u003c\/li\u003e\n\u003cli\u003eDurable All-Metal Construction\u003c\/li\u003e\n\u003cli\u003eInternal M48 Female Threading\u003c\/li\u003e\n\u003cli\u003eProtects Optics From Dust and Debris\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\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\u003eM48 Metal Dustcap with M48i female thread\u003c\/h2\u003e\n\u003cp\u003eThis all-metal dust cap features a female M48 thread to securely seal any male M48 connection in your optical train, protecting sensitive optics from dust and moisture. Unlike push-fit alternatives, the M48 threaded design of this cap prevents it from being accidentally knocked off, ensuring complete protection for correctors, reducers, and camera noses with exposed M48 threads.\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\u003eSecure M48 Threaded Protection for Your Optical Train\u003c\/h3\u003e\n\u003cp\u003eExposed optical components are vulnerable to dust, fingerprints, and moisture. This M48 metal dustcap threads directly onto any male M48 filter thread, providing a robust and positive seal that standard push-in caps cannot match. Its durable metal construction ensures it will not crack or deform over time.\u003c\/p\u003e\n\u003cp\u003eUse it to cap off your field flattener, reducer, or the front of an off-axis guider when your camera is detached. It's an essential accessory for maintaining a pristine optical path during storage or transport, preventing the need for frequent and risky cleaning sessions.\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\u003eM48 Metal Dustcap vs. Plastic Push-Fit Caps: Why Threaded Matters\u003c\/h3\u003e\n\u003cp\u003eWhile a simple plastic cap is functional, it lacks the security of a threaded connection. This M48 metal cap offers clear advantages for protecting critical and expensive components in your imaging setup.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecurity:\u003c\/strong\u003e A threaded connection cannot be accidentally bumped or knocked off inside your accessory case. Your optics remain sealed and protected until you intentionally unscrew the cap.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBetter Seal:\u003c\/strong\u003e The direct thread contact creates a tighter barrier against fine dust particles compared to the loose tolerance of a slip-fit cap.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Constructed from metal, this cap will not crack from repeated use or exposure to cold temperatures, providing a lifetime of reliable protection.\u003c\/li\u003e\n\u003c\/ul\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\"\u003eI removed my camera from my M48 flattener for storage. Can I use this M48 Metal Dustcap to seal the telescope side?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is the perfect application for this cap. Simply thread the M48 Metal Dustcap onto the exposed male M48 threads of your flattener or reducer to keep the internal optics completely sealed from dust while the camera is not attached.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this M48 Metal Dustcap fit the male threads on my Celestron T-Adapter for my 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eMost standard SCT T-adapters use a smaller M42 (T-thread) connection, not M48. You should verify that your specific T-adapter has M48 threads. This cap is designed for the larger 48mm \"wide\" T-adapters, field flatteners, and reducers common in astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of a metal M48 dustcap over a plastic one?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantages are \u003cstrong\u003esecurity\u003c\/strong\u003e and \u003cstrong\u003edurability\u003c\/strong\u003e. A metal, threaded cap cannot fall off accidentally, and it provides a much better seal against fine dust. It also won't crack or break like plastic caps often do, especially in cold weather.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the thread on this M48 Metal Dustcap male or female?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis dustcap has \u003cstrong\u003efemale (internal) M48 threads\u003c\/strong\u003e. It is designed to screw onto accessories that have male (external) M48 threads, such as the telescope-side of a field flattener or the nosepiece of some cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy do I need an M48 dustcap for my corrector lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA corrector lens, flattener, or reducer is a critical optical component that must be kept perfectly clean for optimal imaging. Using this M48 threaded cap ensures that no dust settles on the glass surfaces during storage, preserving image contrast and preventing artifacts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this M48 Metal Dustcap prevent moisture from getting in?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile it is not a hermetically sealed, waterproof cap, the threaded design provides a significantly better seal against ambient humidity and dew than a simple push-fit cap. It greatly reduces the chance of moisture reaching your optics during storage in a humid environment.\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\u003eThread Type\u003c\/td\u003e\n\u003ctd\u003eM48 Female (Internal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eMetal\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\u003eCompatible Brands\u003c\/td\u003e\n\u003ctd\u003eBaader Planetarium, Zeiss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e53 mm\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\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM48 Metal Dustcap\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\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":52913153376541,"sku":"BAA-2958600","price":39.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-M48-Metal-Dustcap-with-M48i-female-thread-1_12a991fd-9dfb-42b7-8b83-b5cc0be384d6.jpg?v=1789086822","url":"https:\/\/davidastro.com\/en-us\/products\/baader-planetarium-m48-metal-dustcap-with-m48i-female-thread","provider":"David Astro","version":"1.0","type":"link"}