{"product_id":"baader-planetarium-m54i-inverter-ring-male-to-female","title":"Baader Planetarium M54i Inverter Ring (Male to Female)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConverts M54 Male Thread to M54 Female Thread\u003c\/li\u003e\n\u003cli\u003eEnables Connection of Two Male-Threaded Components\u003c\/li\u003e\n\u003cli\u003eMaintains a Rigid, Secure Connection in an Optical Train\u003c\/li\u003e\n\u003cli\u003eAll-Metal Construction for Durability and Tilt-Prevention\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 Planetarium M54i Inverter Ring (Male to Female)\u003c\/h2\u003e\n\u003cp\u003eThe Baader Planetarium M54i Inverter Ring is a critical adapter designed for a single purpose: to convert an external M54 male thread into an internal M54 female thread. This allows you to join two components that both present male M54 threads, solving specific connection challenges when building custom optical trains.\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\u003eM54 Thread Conversion: Solving Connection Mismatches\u003c\/h3\u003e\n\u003cp\u003eIn complex imaging setups, it's common to encounter a situation where the component you need to attach—such as a corrector or reducer—has the same male M54 thread as the focuser drawtube it needs to connect to. This M54 inverter ring acts as a gender changer, presenting a female M54 thread that allows the two male-threaded parts to be securely coupled.\u003c\/p\u003e\n\u003cp\u003eBy maintaining the M54 standard, this ring ensures a rigid, tilt-free connection without introducing vignetting or compatibility issues from stepping up or down to a different thread size. It is an essential problem-solver for integrating hardware from different manufacturers into a single, unified optical path.\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\"\u003eI have a corrector and a focuser that both end in an M54 male thread. Can the M54i Inverter Ring connect them?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is the exact purpose of the M54i Inverter Ring. It acts as a gender changer, providing the female M54 thread needed to securely connect two male-threaded components like a corrector and a focuser.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill using the M54i Inverter Ring add significant back focus to my imaging train for my SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile any adapter adds some optical path length, inverter rings are designed to be as thin as possible to minimize their impact. You will need to account for its minimal thickness in your back focus calculations, but it is not a large extension tube.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between an M54 inverter ring and a standard M54 extension tube?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn inverter ring converts a male thread to a female thread (or vice-versa), solving connection compatibility issues. An M54 extension tube simply adds length to the optical path and has the same thread type (male on one end, female on the other) on both sides.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know if I need this M54i Inverter Ring for my setup?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need an M54i inverter ring if you have two pieces of equipment you need to connect, and both of them have M54 male threads. This adapter allows you to join them together securely.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the thread on this M54i Inverter Ring a standard M54x0.75 pitch?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is designed to work with the standard M54x0.75 astronomical thread pitch used by most manufacturers. However, it is always a good practice to verify the thread pitch of your specific components to ensure a perfect match before purchase.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the M54i Inverter Ring risk causing tilt in my optical system?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis ring is precision-machined to ensure a rigid, secure connection. When threaded correctly and tightened, it should not introduce any tilt into your imaging train. Its function is to provide a solid mechanical link between two components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\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 Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":52913170383133,"sku":"BAA-2958752","price":49.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-Inverter-ring-M54i-male-to-female-1_1bdbdd85-eb5c-4b19-ae31-4ca231d9726a.jpg?v=1789087057","url":"https:\/\/davidastro.com\/en-us\/products\/baader-planetarium-m54i-inverter-ring-male-to-female","provider":"David Astro","version":"1.0","type":"link"}