{"product_id":"baader-planetarium-m54-metal-dustcap-with-m54a-male-thread","title":"Baader Planetarium M54 Metal Dustcap with M54a male thread","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eM54a Male (External) Thread\u003c\/li\u003e\n\u003cli\u003eDurable Metal Construction\u003c\/li\u003e\n\u003cli\u003eProtects Optics from Dust and Debris\u003c\/li\u003e\n\u003cli\u003ePrevents Damage to Sensitive Threads\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\u003eM54 Metal Dustcap with M54a male thread\u003c\/h2\u003e\n      \u003cp\u003eThis M54 Metal Dustcap provides robust protection for any female M54 port on your telescope focuser, field flattener, or other optical accessories. The durable metal construction offers a more secure seal than typical plastic caps, keeping dust out of your optical train while safeguarding the fine M54 threads from accidental damage during transport or storage.\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\u003eM54a Metal Dustcap: Sealing Your Optical Train\u003c\/h3\u003e\n      \u003cp\u003eA loose or cracked plastic cap can compromise an entire imaging session by allowing dust to settle on your sensor or corrector lens. This all-metal M54 dustcap threads securely into place, creating a reliable barrier that won't accidentally pop off. It's a simple way to keep your optical system clean.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eSecure Fit:\u003c\/strong\u003e The M54a male (external) threads engage precisely with female ports, preventing wobble or accidental loosening.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eMetal Construction:\u003c\/strong\u003e Offers superior durability compared to standard-issue plastic caps, resisting cracks and deformation.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eOptical Protection:\u003c\/strong\u003e Keeps your internal optics and sensors free from dust particles that can be difficult to remove and cause artifacts in your images.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eThread Integrity:\u003c\/strong\u003e Protects the delicate threads on expensive optical components from being cross-threaded, dented, or otherwise damaged.\u003c\/li\u003e\n      \u003c\/ul\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 primary use for the M54 Metal Dustcap?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe primary use of the \u003cstrong\u003eM54 Metal Dustcap\u003c\/strong\u003e is to seal and protect any exposed female M54 threaded port in your astronomical setup. This includes focusers, correctors, and adapters, preventing contamination from dust and moisture and protecting the threads from physical damage.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill this M54 dustcap fit my Baader SteelTrack or Diamond Steeltrack focuser?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eIt fits accessories of the Baader M54 system with a female M54x0.75 thread. Baader's SteelTrack documentation lists M68 and S58 interfaces rather than M54, so check which adapter your focuser carries.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy should I choose a metal M54 dustcap over a plastic one?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eA metal dustcap offers significantly better durability and a more secure fit. Plastic caps can crack over time, deform in heat, or be knocked loose easily. A \u003cstrong\u003emetal M54 cap\u003c\/strong\u003e provides superior protection against impacts and ensures a tighter, more reliable seal against environmental elements.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the \"M54a\" designation on this dustcap mean?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eIn astronomical threading conventions, the \"a\" typically denotes an external or male thread (Außengewinde in German). This \u003cstrong\u003eM54a dustcap\u003c\/strong\u003e has male threads designed to screw into a corresponding M54 female (internal) port.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I confirm my equipment has an M54 thread before buying this dustcap?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe best way is to check the manufacturer's specifications for your telescope, focuser, or accessory. The manual or product page should list the thread sizes for all connection ports. M54 is a common standard for full-frame correctors and larger focusers, but it's always best to verify your specific equipment.\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\u003eThread\u003c\/td\u003e\n\u003ctd\u003eM54 Male (External)\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\u003e0.02\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e59 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType of Adapter\u003c\/td\u003e\n\u003ctd\u003eDust cap\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\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\"\u003eM54 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\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":52913160061213,"sku":"BAA-2958701","price":43.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-M54-Metal-Dustcap-with-M54a-male-thread-1_659b9b81-4bfb-4096-b2e8-f697fc660585.jpg?v=1789086929","url":"https:\/\/davidastro.com\/en-int\/products\/baader-planetarium-m54-metal-dustcap-with-m54a-male-thread","provider":"David Astro","version":"1.0","type":"link"}