{"product_id":"pegasus-astro-adapter-m74-female-to-m54-male-for-sw-esprit-100","title":"Pegasus Astro Adapter M74 Female to M54 Male (For SW Esprit 100)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects M54 accessories to Sky-Watcher Esprit focusers\u003c\/li\u003e\n\u003cli\u003ePrecise 8.5mm thickness consumes minimal backfocus\u003c\/li\u003e\n\u003cli\u003eFeatures M74 female threads (1.0mm pitch)\u003c\/li\u003e\n\u003cli\u003eFeatures M54 male threads (0.75mm pitch)\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\u003eAdapter M74 Female to M54 Male (For SW Esprit 100)\u003c\/h2\u003e\n\u003cp\u003eThis Pegasus Astro adapter provides a robust, direct connection from the stock focuser of a Sky-Watcher Esprit series telescope to M54-threaded accessories. Machined to a precise 8.5mm thickness, it converts the large M74 female connection on the focuser to a standard M54 male thread with a 0.75mm pitch, ensuring a secure fit while consuming a known amount of backfocus.\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\u003eA Precision 8.5mm M74 to M54 Adapter for Esprit Telescopes\u003c\/h3\u003e\n\u003cp\u003eEngineered specifically for the Sky-Watcher Esprit series, this adapter solves the critical challenge of integrating modern imaging equipment. Its primary function is to bridge the M74 (1.0mm pitch) threaded drawtube of an Esprit focuser to the M54 (0.75mm pitch) standard common on field flatteners, off-axis guiders, and rotators like the Pegasus Falcon Rotator v1. The fixed 8.5mm thickness is a critical dimension, allowing you to accurately calculate your remaining backfocus and achieve perfect sensor spacing.\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 use for this M74 to M54 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is designed to connect accessories with a female M54 thread directly to the stock focuser of a Sky-Watcher Esprit series telescope, such as the Esprit 100. It is commonly used to attach the Pegasus Astro Falcon Rotator v1 or other M54-compatible components to the telescope's M74 drawtube.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter work with a Sky-Watcher Esprit 120 or 150?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, while specified for the SW Esprit 100, this adapter is suitable for other models in the Sky-Watcher Esprit series that use the same M74 female thread on the stock focuser's drawtube. Always confirm your focuser's thread specification before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 8.5mm thickness of this adapter affect my imaging train?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e8.5mm thickness\u003c\/strong\u003e consumes that exact amount of your telescope's available backfocus. You must subtract this 8.5mm from the total backfocus distance specified for your flattener or reducer to determine the remaining spacing needed for your camera and other accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install the Falcon Rotator on my Esprit 100 using this adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo install a Falcon Rotator, you first unthread the stock visual back or camera adapter from your Esprit 100's focuser. You then screw the M74 female side of this adapter onto the exposed M74 male threads of the focuser drawtube. Finally, you can thread the Falcon Rotator's M54 female connection onto the new M54 male threads of the adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do the different thread pitches (1.0mm vs 0.75mm) mean?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe thread pitch refers to the distance between threads. The M74 female side has a \u003cstrong\u003e1.0mm pitch\u003c\/strong\u003e to match the coarse thread on the Esprit focuser. The M54 male side has a finer \u003cstrong\u003e0.75mm pitch\u003c\/strong\u003e, which is the standard for most astrophotography accessories, ensuring broad compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this adapter with a non-Pegasus Astro rotator?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, any rotator, off-axis guider, or other imaging accessory that requires a male M54 x 0.75mm thread for connection to the telescope can be used with this adapter, provided your total backfocus budget allows for the 8.5mm thickness.\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\u003eAdapter Thickness (Backfocus)\u003c\/td\u003e\n\u003ctd\u003e8.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Thread\u003c\/td\u003e\n\u003ctd\u003eM74 x 1.0mm Pitch (Female)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Side Thread\u003c\/td\u003e\n\u003ctd\u003eM54 x 0.75mm Pitch (Male)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eSky-Watcher Esprit Series (e.g., Esprit 100)\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\"\u003eAdapter M74 Female to M54 Male\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\/pegasus-astro-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003ePegasus Astro 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pegasus Astro","offers":[{"title":"Default Title","offer_id":52686357332253,"sku":"PEG-ADAPT-M74F-M54M","price":59.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/pegasus-astro-adapter-m74-female-to-m54-male-for-sw-esprit-100-1.png?v=1793649427","url":"https:\/\/davidastro.com\/products\/pegasus-astro-adapter-m74-female-to-m54-male-for-sw-esprit-100","provider":"David Astro","version":"1.0","type":"link"}