{"title":"Adaptateurs Pegasus Astro","description":"\u003cp\u003eLes adaptateurs Pegasus Astro sont des convertisseurs de filetage de précision pour construire un train optique complet. Beaucoup reposent sur le filetage M68 courant sur les grands porte-oculaires, avec des conversions vers M48, M54, M63, M72 et M74.\u003c\/p\u003e\u003cp\u003eDes versions dédiées s'adaptent à la Sky-Watcher Esprit 100, aux SCT à filetage 3.25\" comme les C11, C14 et EdgeHD, et aux réducteurs à filetage M63 de Riccardi et William Optics. Les adaptateurs pour roue à filtres et diviseur optique Indigo sont aussi ici.\u003c\/p\u003e","products":[{"product_id":"pegasus-adapter-m54-male-to-m42-male","title":"Adaptateur Pegasus M54 Mâle vers M42 Mâle","description":"\u003c!-- more --\u003e\u003cul\u003e\n\n\u003cli\u003eÉpaisseur de l'adaptateur : 2,0 mm\u003c\/li\u003e\n\n\u003cli\u003eFiletage : pas de 0,75 mm \/ longueur de 6 mm\u003c\/li\u003e\n\n\u003cli\u003eLe côté M54 a un filetage interne M48\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Pegasus Astro","offers":[{"title":"Default Title","offer_id":44967920369949,"sku":"PEG-ADAPT-M54M-M42M","price":35.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/PEG-ADAPT-M54M-M42M__91316.1634839773.1280.1280.jpg?v=1684347043"},{"product_id":"pegasus-adapter-m54-male-to-m48-male","title":"Adaptateur Pegasus M54 Mâle vers M48 Mâle","description":"\u003c!-- more --\u003e\u003cul\u003e\n\n\u003cli\u003eÉpaisseur de l'adaptateur : 2,0 mm\u003c\/li\u003e\n\n\u003cli\u003eFiletage : pas de 0,75 mm \/ longueur de 4 mm\u003c\/li\u003e\n\n\u003cli\u003eLe côté M54 a un filetage interne M48\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Pegasus Astro","offers":[{"title":"Default Title","offer_id":44968048886045,"sku":"PEG-ADAPT-M54M-M48M","price":35.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/PEG-ADAPT-M54M-M48M__59605.1665603368.1280.1280.jpg?v=1684348285"},{"product_id":"pegasus-adapter-m54-male-to-m42-female","title":"Adaptateur Pegasus M54 Mâle vers M42 Femelle","description":"\u003c!-- more --\u003e\u003cul\u003e\n\n\u003cli\u003eÉpaisseur de l'adaptateur : 2,0 mm\u003c\/li\u003e\n\n\u003cli\u003eFiletage : pas de 0,75 mm \/ longueur de 6 mm\u003c\/li\u003e\n\n\u003cli\u003eLe côté M54 a un filetage interne M48\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Pegasus Astro","offers":[{"title":"Default Title","offer_id":44968076411165,"sku":"PEG-ADAPT-M54M-M42F","price":35.0,"currency_code":"CAD","in_stock":true}]},{"product_id":"pegasus-adapter-m54-male-to-m48-female","title":"Adaptateur Pegasus M54 Mâle vers M48 Femelle","description":"\u003c!-- more --\u003e Adaptateur Pegasus M54 Mâle vers M48 Femelle ","brand":"Pegasus Astro","offers":[{"title":"Default Title","offer_id":44968076542237,"sku":"PEG-ADAPT-M54M-M48F","price":35.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/pegasus-astro-accessory-pegasus-astro-adapter-m54-male-to-m48-female-peg-adapt-m54m-m48f-38506373775579_png.webp?v=1700599863"},{"product_id":"pegasus-adapter-m54-male-to-m48-female-copy","title":"Adaptateur Pegasus M54 mâle vers M54 mâle","description":"\u003c!-- more --\u003e\n\u003cp\u003e Adaptateur Pegasus M54 mâle vers M54 mâle\u003c\/p\u003e","brand":"Pegasus Astro","offers":[{"title":"Default Title","offer_id":48747404722461,"sku":"PEG-ADAPT-M54M-M54M","price":34.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/pegasus-astro-accessory-pegasus-astro-adapter-m54-male-to-m48-female-peg-adapt-m54m-m48f-38506373775579_png.webp?v=1700599863"},{"product_id":"pegasus-m68-male-to-m68-male","title":"Pegasus M68 Male to M68 Male Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n  \u003cli\u003eAdds 1.4 mm of back focus\u003c\/li\u003e\n  \u003cli\u003eM68 x 1.0mm male threads on both sides\u003c\/li\u003e\n  \u003cli\u003e4 mm thread length for secure connection\u003c\/li\u003e\n  \u003cli\u003eInternal M54 x 0.75mm female thread\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\u003eAdapter M68 Male to M68 Male\u003c\/h2\u003e\n          \u003cp\u003eThis M68 Male to M68 Male adapter provides a precise 1.4 mm of optical path length, ideal for fine-tuning back focus in critical imaging setups. Each side features an M68 male thread with a 1.0mm pitch and 4 mm of length for a secure fit between components. The adapter also includes a versatile inner M54 x 0.75mm female thread, allowing you to step down to smaller accessories without needing a separate adapter.\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\u003ePrecision Spacing: A 1.4mm M68 Male-to-Male Adapter\u003c\/h3\u003e\n          \u003cp\u003eWhen your back focus calculation requires a small, precise adjustment, this adapter fills the gap. Its primary function is to join two female M68 threaded components, such as a focuser and a field flattener, while adding exactly 1.4 mm to the optical train. The M68 x 1.0mm threads are standard for many large-format correctors and focusers, making this a crucial part for achieving perfect star shapes to the edge of the frame.\u003c\/p\u003e\n          \u003cp\u003eThe adapter's utility is expanded by its internal M54 x 0.75mm female thread. This allows you to connect M54 accessories directly, offering a convenient step-down connection within your M68 imaging train. The thin but rigid design ensures no flexure, maintaining perfect optical alignment.\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 M68 Male to M68 Male adapter?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eThis adapter is designed to connect two components that both have female M68 x 1.0mm threads, such as connecting a focuser drawtube directly to a field flattener or rotator. Its main purpose is to add a very specific \u003cstrong\u003e1.4 mm\u003c\/strong\u003e of spacing to achieve the correct back focus distance required by your optical system.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I use the inner M54 thread on this M68 adapter?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eThe inner M54 x 0.75mm female thread allows you to attach accessories with a male M54 thread directly to the adapter. This is useful for stepping down the connection size from M68 to M54 without needing an additional, thicker adapter, which helps conserve precious back focus.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eMy imaging train is 1.5mm short of the correct back focus. Will this 1.4mm M68 adapter work?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eA 0.1mm difference is generally within the tolerance for most amateur imaging setups, especially with slower optical systems (f\/7 or higher). While 1.5mm would be ideal, using this 1.4 mm adapter will likely produce excellent results and is far better than having a significant spacing error. For very fast systems (f\/4 or below), that 0.1mm may have a minor impact on corner star shapes.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the thread pitch of this M68 Male adapter?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eBoth the external M68 male threads and the internal M54 female thread have a standard pitch for astronomical equipment. The M68 threads have a \u003cstrong\u003e1.0mm pitch\u003c\/strong\u003e, and the internal M54 thread has a \u003cstrong\u003e0.75mm pitch\u003c\/strong\u003e.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this M68 adapter to connect my reducer to an off-axis guider?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eYes, if both your reducer and off-axis guider present female M68 x 1.0mm threads and you need exactly 1.4 mm of additional spacing between them, this adapter is the perfect solution. It provides a rigid, threaded connection that maintains alignment.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eIs this M68 adapter suitable for a heavy, large-format camera?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eAbsolutely. The 4 mm thread length on each side provides a secure, load-bearing connection that is more than adequate for large CCD or CMOS cameras. Threaded connections like this are significantly more rigid and resistant to tilt than compression or slip-fit adapters.\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 (Back Focus)\u003c\/td\u003e\n          \u003ctd\u003e1.4 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eExternal Thread\u003c\/td\u003e\n          \u003ctd\u003eM68 Male (Pitch 1.0mm)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eInternal Thread\u003c\/td\u003e\n          \u003ctd\u003eM54 Female (Pitch 0.75mm)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eThread Length\u003c\/td\u003e\n          \u003ctd\u003e4 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\"\u003eAdapter M68 Male to M68 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    \u003cp\u003eNo downloads are available for this product.\u003c\/p\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects.\u003c\/p\u003e\n  \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pegasus Astro","offers":[{"title":"Default Title","offer_id":49171382108445,"sku":"PEG-ADAPT-M68M-M68M","price":39.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PEG-ADAPT-M68M-M68M.jpg?v=1726595026"},{"product_id":"pegasus-m68-male-to-m54-male","title":"Pegasus M68 Male to M54 Male Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects M68x1.0 accessories to M54x0.75 components\u003c\/li\u003e\n\u003cli\u003eMale-to-male thread design for direct coupling\u003c\/li\u003e\n\u003cli\u003e4mm thread length on both M68 and M54 sides\u003c\/li\u003e\n\u003cli\u003eInternal M48x0.75 threads for standard 2-inch filters\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\u003eAdapter M68 Male to M54 Male\u003c\/h2\u003e\n\u003cp\u003eThis precision-machined Adapter M68 Male to M54 Male solves critical spacing and connection challenges in complex imaging trains. It directly converts the larger M68x1.0mm thread standard to the common M54x0.75mm pitch with a 4mm thread length on each side. The adapter also features an internal M48x0.75mm thread, allowing you to place standard 2-inch filters directly within the optical path.\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\u003eM68 to M54 Conversion: 1.0mm and 0.75mm Pitch Standards\u003c\/h3\u003e\n\u003cp\u003eThe primary function of this adapter is to bridge two different large-format thread sizes common in high-end imaging. The male M68 side features a 1.0mm pitch and 4mm of thread length, ideal for connecting to large correctors or flatteners. The male M54 side uses the standard 0.75mm pitch over a 4mm length, ensuring a secure fit with popular filter wheels, off-axis guiders, and camera rotators.\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\u003eIntegrated M48 Filter Path: A 2-inch Filter-Ready Core\u003c\/h3\u003e\n\u003cp\u003eA key feature is the internal M48x0.75mm threaded bore, which passes through the adapter. This allows you to install a standard 2-inch astronomy filter inside the adapter itself, saving space and potentially reducing back focus requirements compared to a separate filter drawer. This is particularly useful for one-shot color cameras or when a single filter is used for an entire session.\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 the Adapter M68 Male to M54 Male?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is designed to connect a component with a female M68x1.0 port, like a large format field flattener or reducer, to an accessory with a female M54x0.75 port, such as a filter wheel or an off-axis guider. The internal M48 thread also allows for the integration of a 2-inch filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Adapter M68 Male to M54 Male to install filters with my full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the internal M48x0.75mm threads are the standard for 2-inch mounted astronomy filters. This allows you to place a filter within the adapter, which is an efficient way to add filtration to an imaging train that terminates in a full-frame camera attached via M54 connections.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter cause vignetting with my large sensor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the M68 and M54 openings are designed for large sensors, using the internal M48 filter thread can introduce vignetting on sensors larger than the APS-C format, especially with fast optical systems. The clear aperture is defined by the M48 thread, so it's best suited for full-frame sensors when used without a filter installed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the optical length of the Adapter M68 Male to M54 Male?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe specifications do not list the optical length. The adapter's contribution to back focus will be its overall physical length minus the length of the male threads that recess into the connecting components. This must be measured for precise back focus calculations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach this adapter between my Riccardi Reducer and ZWO filter wheel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIf your Riccardi reducer has a female M68x1.0 output and your ZWO filter wheel has a female M54x0.75 input, this adapter will work perfectly. You would thread the M68 male side into the reducer and the M54 male side into the filter wheel to create a solid, direct connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the pitch on the M54 side of the Adapter M68 Male to M54 Male compatible with M54 camera adapters?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the M54 thread has a pitch of 0.75mm, which is the industry standard for most M54-threaded astronomy accessories, including filter wheels, off-axis guiders, and camera-specific T-rings. This ensures wide compatibility.\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\u003eM68 Thread\u003c\/td\u003e\n\u003ctd\u003eMale, Pitch 1.0mm, 4mm length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM54 Thread\u003c\/td\u003e\n\u003ctd\u003eMale, Pitch 0.75mm, 4mm length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Thread\u003c\/td\u003e\n\u003ctd\u003eM48 x 0.75mm (for 2\" filters)\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 M68 Male 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\u003cp\u003eNo downloads are available for this product.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThis product is covered by a 1-year manufacturer's warranty against defects in materials and workmanship.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pegasus Astro","offers":[{"title":"Default Title","offer_id":49171383320861,"sku":"PEG-ADAPT-M68M-M54M","price":39.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PEG-ADAPT-M68M-M54M.jpg?v=1726594905"},{"product_id":"pegasus-m68-male-to-m54-male-20mm","title":"Pegasus M68 Male to M54 Male Adapter - 20mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects Pegasus Falcon 2 Rotator to M54 accessories\u003c\/li\u003e\n\u003cli\u003eAdds exactly 20mm of backfocus to the imaging train\u003c\/li\u003e\n\u003cli\u003eM68x1 Male thread on one side\u003c\/li\u003e\n\u003cli\u003eM54x0.75 Male thread on the opposite side\u003c\/li\u003e\n\u003cli\u003eFeatures internal M48 threads for 2\" filters\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\u003eM68 Male to M54 Male Adapter (20mm length)\u003c\/h2\u003e\n\u003cp\u003eThis Pegasus Astro adapter provides a secure, all-threaded connection from an M68 female port to an M54 female port, adding exactly 20mm of optical path length to your imaging train. It is specifically designed to bridge the gap between the Pegasus Falcon 2 Rotator and accessories like an Off-Axis Guider (OAG), ensuring a rigid connection and precise backfocus spacing.\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\u003eM68 to M54 Connection: 20mm of Precise Spacing\u003c\/h3\u003e\n\u003cp\u003eAchieving the correct backfocus is critical for a flat field, and this 20mm adapter is machined to provide that exact distance. The male M68x1 threads attach directly to the Falcon 2 Rotator, while the male M54x0.75 threads connect to the telescope side of most modern OAGs or filter wheels. The design also prevents direct metal-on-metal collision between your primary accessories.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal M48 Threads:\u003c\/strong\u003e The adapter's inner bore is threaded for standard M48x0.75 (2-inch) filters, allowing you to place a filter in the optical path without needing a separate filter drawer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack Anodized Finish:\u003c\/strong\u003e A matte black finish minimizes internal reflections, preserving image contrast by preventing stray light from reaching the sensor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid Construction:\u003c\/strong\u003e Machined from a single piece of aluminum, the adapter eliminates flexure that can occur when stacking multiple smaller, thinner adapters to achieve the same spacing.\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\"\u003eWhat is the primary use for this M68 to M54 20mm adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is specifically designed to connect the \u003cstrong\u003ePegasus Astro Falcon 2 Rotator\u003c\/strong\u003e (which has an M68 female output) to an accessory with an M54 female input, such as an Off-Axis Guider (OAG) or filter wheel. It adds a precise \u003cstrong\u003e20mm\u003c\/strong\u003e of spacing to help you achieve the required backfocus for your camera and reducer\/corrector combination.\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 exactly 20mm of spacing for my setup?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need to calculate your backfocus budget. Start with the required backfocus of your flattener or reducer (e.g., 55mm). Then, subtract the backfocus of your camera, OAG, filter wheel, and any other adapters. If the remaining distance is 20mm, this adapter is the correct choice for your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I place a 2\" filter inside this 20mm adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The adapter features an internal M48x0.75 thread, which is the standard for 2-inch mounted astronomy filters. This allows you to install a light pollution or narrowband filter directly within the adapter itself, saving space in your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this M68 to M54 adapter work with rotators other than the Falcon 2?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt will work with any rotator or accessory that presents a female M68x1 thread and needs to connect to a device with a female M54x0.75 thread, provided that 20mm is the correct spacing required. However, it was engineered with the Falcon 2 Rotator and common OAGs in mind.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm connecting my Falcon 2 Rotator to a Celestron OAG. Is this the right part?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt depends on the rest of your imaging train. The Celestron OAG for EdgeHD telescopes has an M54 female thread on the telescope side, making it mechanically compatible. You must confirm through your own backfocus calculation that the 20mm spacing this adapter provides is the exact distance you need to reach the 55mm (or other) backfocus requirement for your specific setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"prevents metal collision\" mean for this 20mm adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis means the adapter's length and shoulder design ensure that the body of your Falcon 2 Rotator will not make physical contact with the body of your OAG or filter wheel when fully threaded together. This prevents potential binding, scratching, or damage to your equipment.\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 Type\u003c\/td\u003e\n\u003ctd\u003eMale to Male Threaded Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Thread\u003c\/td\u003e\n\u003ctd\u003eM68 x 1 Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Thread\u003c\/td\u003e\n\u003ctd\u003eM54 x 0.75 Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdapter Thickness (Backfocus)\u003c\/td\u003e\n\u003ctd\u003e20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Filter Threads\u003c\/td\u003e\n\u003ctd\u003eM48 x 0.75 (2\")\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\"\u003eM68 Male to M54 Male Adapter (20mm)\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\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/pegasusastro.com\/download\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003eUnity Platform\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/pegasus-astro-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003ePegasus Astro 2-Year Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pegasus Astro","offers":[{"title":"Default Title","offer_id":49171395117341,"sku":"PEG-ADAPT-M68M-M54M-20","price":49.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PEG-ADAPT-M68M-M54M-20.jpg?v=1726595543"},{"product_id":"pegasus-m68-male-to-m48-male","title":"Pegasus M68 Male to M48 Male Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects M68x1.0 accessories to M48x0.75 components\u003c\/li\u003e\n\u003cli\u003eM68 male thread with 1.0mm pitch and 4mm length\u003c\/li\u003e\n\u003cli\u003eM48 male thread with 0.75mm pitch and 4mm length\u003c\/li\u003e\n\u003cli\u003eInternal M42x0.75 threads for 2\" filter mounting\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 M68 Male to M48 Male\u003c\/h2\u003e\n\u003cp\u003eThis adapter provides a robust M68 Male to M48 Male connection, featuring a 1.0mm pitch on the M68 side and a standard 0.75mm pitch on the M48 side. Both male threads have a 4mm length for secure engagement, and the adapter includes an internal M42x0.75 thread for mounting standard 2-inch filters directly within the optical path.\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\u003eM68 to M48 Conversion with a 4mm Thread Length\u003c\/h3\u003e\n\u003cp\u003eThis adapter solves a common connection problem, allowing you to attach modern M48 accessories like field flatteners, reducers, or cameras to focusers and correctors that use the larger M68x1.0 standard. The 4mm thread length on both the M68 and M48 sides ensures a solid, non-flexing fit without consuming excessive back focus, which is critical for maintaining the correct spacing in an imaging train.\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\u003eIntegrated M42x0.75 Internal Threads for Filters\u003c\/h3\u003e\n\u003cp\u003eA key feature of this adapter is the integrated M42x0.75 female thread on the inside of the M48 barrel. This allows you to install a standard 2-inch mounted filter inside the adapter itself. Placing a filter at this point in the optical train is often more convenient than using a filter drawer, especially in compact setups or when connecting directly to a camera nosepiece.\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 M68 to M48 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is primarily used to connect imaging equipment with a female M48x0.75 thread (like many field flatteners, off-axis guiders, or cameras) to a focuser drawtube or corrector that has a female M68x1.0 thread. It acts as a step-down converter for your optical train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I use the internal M42 thread on the M68 to M48 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe internal M42x0.75 thread is designed to accept standard 2-inch astronomy filters. You can simply screw a filter directly into the inside of the adapter's M48 side, placing it securely within your imaging train without needing a separate filter cell or drawer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter work with my Sky-Watcher Esprit focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eMany Sky-Watcher Esprit models terminate in a female M68x1.0 thread. This adapter allows you to convert that output to the more common M48x0.75 male thread, making it compatible with a wide range of M48-based correctors and accessories. Always confirm the thread specification of your specific focuser model before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the M48 thread on this adapter the same as a 2-inch filter thread?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. While they are close in diameter, they are different standards. The M48 thread on this adapter has a 0.75mm pitch (M48x0.75). Standard 2-inch filters use an M48 thread with a 0.6mm pitch. The internal M42 thread is what you would use for 2\" filters, as most are mounted in M42 threaded cells despite the 2\" barrel size designation. This is a common point of confusion.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the optical length of the M68 to M48 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the thread length is specified as 4mm, the exact optical length (the amount of back focus it consumes) is not specified. However, as a male-to-male adapter, it is designed to be as thin as possible, typically consuming only a few millimeters of back focus once threaded into place.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this adapter to connect my ZWO camera to a large format corrector?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is a perfect application. If you have a corrector that outputs an M68x1.0 female thread and you need to connect an M48-threaded accessory like a ZWO filter wheel or camera, this adapter bridges that gap. The internal M42 thread also provides a convenient spot for a UV\/IR cut or light pollution filter before the camera sensor.\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\u003eM68 Male Thread\u003c\/td\u003e\n\u003ctd\u003ePitch 1.0mm \/ 4mm length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM48 Male Thread\u003c\/td\u003e\n\u003ctd\u003ePitch 0.75mm \/ 4mm length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Thread\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75mm\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 M68 Male to M48 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\"\u003eStandard 2-Year Manufacturer Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pegasus Astro","offers":[{"title":"Default Title","offer_id":49171401769245,"sku":"PEG-ADAPT-M68M-M48M","price":39.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PEG-ADAPT-M68M-M48M.jpg?v=1726595373"},{"product_id":"pegasus-m68-male-to-m42-male","title":"Pegasus M68 Male to M42 Male Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects M68x1 accessories to M42x0.75 T-threads\u003c\/li\u003e\n\u003cli\u003eAdds only 4mm of optical length to the imaging train\u003c\/li\u003e\n\u003cli\u003eMale-to-male thread configuration for direct coupling\u003c\/li\u003e\n\u003cli\u003eStandard M42 pitch of 0.75mm ensures wide compatibility\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 M68 Male to M42 Male\u003c\/h2\u003e\n\u003cp\u003eThis Adapter M68 Male to M42 Male provides a robust, direct connection between large-format M68 accessories and standard M42 T-threaded components, adding only 4mm of length to your optical path. The standard M42 thread pitch of 0.75mm ensures compatibility with a wide range of cameras, filter wheels, and off-axis guiders.\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\u003eM68 to M42 Connection with a Minimal 4mm Optical Path\u003c\/h3\u003e\n\u003cp\u003eEngineered to solve a common connection challenge, this adapter allows you to step down from the larger M68 thread standard—often found on high-end focusers, field flatteners, and rotators—to the universal M42 T-thread. Its key feature is the minimal 4mm optical length, which is critical for maintaining correct back focus distances, especially in systems with reducers or correctors that have tight tolerances. The male-to-male design creates a solid, secure link between two female-threaded components, eliminating flexure in the imaging train.\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 Adapter M68 Male to M42 Male?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is designed to connect a component with a female M68 thread (like a large focuser drawtube or a full-frame corrector) directly to a component with a female M42 T-thread (such as a DSLR T-ring, a filter wheel, or an astronomy camera).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 4mm length of the Adapter M68 Male to M42 Male affect my back focus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter adds exactly \u003cstrong\u003e4mm\u003c\/strong\u003e to your back focus distance. You must account for this when calculating the spacing for your flattener or reducer. Its minimal profile is designed to consume as little of your precious back focus as possible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the M42 thread on this adapter the standard T-thread?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The M42 thread has a pitch of \u003cstrong\u003e0.75mm\u003c\/strong\u003e, which is the universal standard for photographic T-threads used in astronomy. This ensures compatibility with the vast majority of T-rings and camera adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this Adapter M68 Male to M42 Male to connect my Sky-Watcher Esprit reducer to my ZWO camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis depends on the specific threads of your components. If your Esprit reducer terminates in a female M68 thread and your ZWO camera or filter wheel has a female M42 T-thread, this adapter will bridge the connection, assuming the 4mm path length fits within your back focus requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy would I need a male-to-male adapter like this Adapter M68 Male to M42 Male?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA male-to-male adapter acts as a thread changer and coupler between two components that both have female threads. It's a common requirement when connecting parts from different manufacturers that were not originally designed to mate directly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter cause vignetting with my full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eStepping down from a large M68 opening to a smaller M42 throat can introduce vignetting, especially on fast optical systems or with full-frame sensors. While the adapter itself is low-profile, the M42 standard is the limiting factor and is generally better suited for APS-C or smaller sensors to avoid dark corners in your images.\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\u003eConnection 1\u003c\/td\u003e\n\u003ctd\u003eM68 Male Thread (M68x1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection 2\u003c\/td\u003e\n\u003ctd\u003eM42 Male Thread (T-2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM42 Thread Pitch\u003c\/td\u003e\n\u003ctd\u003e0.75mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e4mm\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 M68 Male to M42 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\u003cp\u003eStandard Manufacturer Warranty\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pegasus Astro","offers":[{"title":"Default Title","offer_id":49171422052637,"sku":"PEG-ADAPT-M68M-M42M","price":39.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PEG-ADAPT-M68M-M42M.jpg?v=1726595611"},{"product_id":"pegasus-m68-male-to-m42-female","title":"Pegasus M68 Male to M42 Female Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConverts M68x1 Male Threads to M42x0.75 Female T-Threads\u003c\/li\u003e\n\u003cli\u003eStandard 0.75mm Pitch for Universal T-Ring Compatibility\u003c\/li\u003e\n\u003cli\u003eMaintains a Secure, Non-Flexing Connection\u003c\/li\u003e\n\u003cli\u003ePrecision-Machined for Optical Train Alignment\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\u003eAdapter M68 Male to M42 Female\u003c\/h2\u003e\n\u003cp\u003eThis Adapter M68 Male to M42 Female provides a simple, secure solution for integrating standard T-thread accessories into larger optical systems. It directly converts a male M68 thread to a female M42 T-thread, featuring the universal 0.75mm pitch required for compatibility with DSLR T-rings, filter wheels, and off-axis guiders.\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\u003eM68 to M42 Conversion with a Standard 0.75mm Pitch\u003c\/h3\u003e\n\u003cp\u003eThe primary function of this adapter is to bridge the gap between large-format focusers, correctors, or flatteners that terminate in M68 male threads and the vast ecosystem of M42 accessories. The female side features a standard M42x0.75mm thread, ensuring you can securely attach your existing imaging equipment without introducing flexure or misalignment into the optical path. This single-piece component is essential for creating a robust, all-threaded connection from your telescope to your camera.\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 main use for the Adapter M68 Male to M42 Female?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter allows you to connect accessories with a male M42 T-thread (like a DSLR T-ring, a guide camera, or a filter wheel) to a telescope focuser, field flattener, or other component that has a female M68 thread. It steps down the larger format to the more common T-thread standard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I connect my Canon DSLR to a focuser with M68 threads using this adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou will need two components: this M68 to M42 adapter and an M42 T-ring for your specific Canon EOS model. First, thread the adapter onto the M68 male thread of your focuser. Then, thread the Canon T-ring onto the female M42 threads of the adapter. Finally, attach your camera body to the T-ring's bayonet mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the M42 thread on this adapter a standard T-thread?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The M42 female thread has a pitch of 0.75mm, which is the universal standard for astronomical T-threads. This ensures compatibility with the vast majority of T-rings and imaging accessories on the market.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter add significant length to my imaging train?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAdapters like this are designed to be as thin as possible while maintaining structural integrity. While it will add a small amount of optical path length, it is typically minimal and must be accounted for when calculating back focus. Always measure your specific setup to ensure you can reach focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the Adapter M68 Male to M42 Female be used visually?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile primarily designed for imaging, it could be used in a visual setup if you have a specific need to connect an M42-threaded accessory, such as a T-threaded eyepiece holder, to an M68 output. However, for standard visual observing, a dedicated M68 to 2\" eyepiece adapter is typically used.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this adapter strong enough for a heavy camera and filter wheel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. A fully threaded connection, which this adapter provides, is significantly more secure and rigid than using set-screws or compression rings. It is designed to support the weight of typical DSLR or dedicated astronomy camera setups without sagging or flexure.\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\u003eM42 Thread Pitch\u003c\/td\u003e\n\u003ctd\u003e0.75mm\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 M68 Male to M42 Female\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\u003cp\u003eNo downloads are available for this product.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThis product is covered by a 2-year manufacturer's warranty against defects in materials and workmanship.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pegasus Astro","offers":[{"title":"Default Title","offer_id":49171431817501,"sku":"PEG-ADAPT-M68M-M42F","price":39.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PEG-ADAPT-M68M-M42F.jpg?v=1726595662"},{"product_id":"pegasus-m68-male-to-m48-female","title":"Pegasus M68 Male to M48 Female Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects M48 (2-inch filter) accessories to M68 focusers\u003c\/li\u003e\n\u003cli\u003eM68x1 Male Thread\u003c\/li\u003e\n\u003cli\u003eM48x0.75 Female Thread\u003c\/li\u003e\n\u003cli\u003eMaintains a rigid, non-flexing connection\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 M68 Male to M48 Female\u003c\/h2\u003e\n\u003cp\u003eThis Adapter M68 Male to M48 Female provides a simple, secure solution for integrating standard M48x0.75 accessories into an optical train that uses the larger M68 thread standard. By converting the large male M68 thread to a female M48 thread, you can directly attach popular cameras, filter wheels, and off-axis guiders without introducing flexure.\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 Your Imaging Train: Converting M68 Threads to the M48 Standard\u003c\/h3\u003e\n\u003cp\u003eMany high-end focusers and field correctors terminate in a large-aperture M68 thread to prevent vignetting with full-frame sensors. This adapter steps that connection down to the widely used M48 female thread, often called the \"2-inch filter thread,\" which is the standard for a vast range of astrophotography equipment. This single, machined piece ensures a rigid connection that is critical for maintaining optical alignment and preventing tilt, especially with heavier imaging payloads.\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\u003eMaintaining Optical Alignment with a 0.75mm Pitch\u003c\/h3\u003e\n\u003cp\u003eThe adapter features a standard M48 thread pitch of 0.75mm, ensuring full compatibility with accessories from virtually any manufacturer. The precision-cut threads allow for a tight, secure fit that won't loosen during an imaging session. This solid metal-on-metal contact is superior to multi-part adapters or push-fit solutions, which can introduce slight shifts in the optical axis as the telescope tracks across the sky.\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 Adapter M68 Male to M48 Female?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts primary function is to connect astrophotography accessories with a male M48 thread (like a camera nosepiece, filter wheel, or off-axis guider) to a telescope focuser or corrector that has a female M68 thread. It allows you to use your standard 2-inch accessories on larger-format optical systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this M68 to M48 adapter work with my specific brand of focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is designed to work with any focuser, corrector, or accessory that utilizes a standard M68 female thread. Likewise, the female side is a standard M48x0.75 thread, which is compatible with the vast majority of astronomy cameras, filter drawers, and other 2-inch barrel accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow much length does this Adapter M68 Male to M48 Female add to the optical path?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the exact optical path length is not specified, thread adapters like this are typically designed to be as thin as possible while maintaining structural integrity. You should assume it adds a few millimeters to your back focus distance. Always measure your final imaging train to ensure you are within the correct back focus tolerance for your flattener or reducer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Adapter M68 Male to M48 Female to attach my DSLR camera to a refractor with an M68 focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. If your DSLR camera has a standard M48 T-ring, you can thread the T-ring directly into the female M48 side of this adapter. This will allow you to securely attach your camera to the M68 focuser drawtube, providing a much more rigid connection than a standard 2-inch push-fit adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the thread pitch on this adapter standard?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the female side uses an M48x0.75 thread. The 0.75mm pitch is the industry standard for 2-inch astronomy filters and accessories, ensuring wide compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have an off-axis guider with male M48 threads. Can I connect it to my Takahashi telescope's M68 corrector using this adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. This is a perfect use case. You would thread the M68 male side of the adapter into your telescope's corrector, and then thread your M48 off-axis guider into the female M48 side of the adapter. This creates a secure, all-threaded connection for your entire imaging train.\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\u003eMale Thread\u003c\/td\u003e\n\u003ctd\u003eM68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFemale Thread\u003c\/td\u003e\n\u003ctd\u003eM48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM48 Thread Pitch\u003c\/td\u003e\n\u003ctd\u003e0.75mm\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 M68 Male to M48 Female\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\u003cp\u003eThis product is covered by a 1-year manufacturer's warranty against defects in materials and workmanship.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pegasus Astro","offers":[{"title":"Default Title","offer_id":49171437388061,"sku":"PEG-ADAPT-M68M-M48F","price":39.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PEG-ADAPT-M68M-M48F.jpg?v=1726595717"},{"product_id":"pegasus-m68-male-to-m54-female","title":"Pegasus M68 Male to M54 Female Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects M68 Male threads to M54 Female threads\u003c\/li\u003e\n\u003cli\u003eMaintains a rigid, flex-free connection\u003c\/li\u003e\n\u003cli\u003eStandard 0.75mm thread pitch on the M54 side\u003c\/li\u003e\n\u003cli\u003eBlack anodized aluminum construction\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\u003eAdapter M68 Male to M54 Female\u003c\/h2\u003e\n\u003cp\u003eThis Adapter M68 Male to M54 Female provides a critical link in your astrophotography imaging train, enabling a secure, threaded connection between components of different sizes. It converts a larger M68 male thread, common on larger correctors and flatteners, to the widely used M54 female thread with a standard 0.75mm pitch, ensuring compatibility with many filter wheels, off-axis guiders, and cameras.\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 Your Imaging Train with a 0.75mm Pitch Threaded Connection\u003c\/h3\u003e\n\u003cp\u003eEliminate potential flexure and tilt by replacing compression rings or slip-fit adapters with this solid, threaded solution. The M68 to M54 adapter ensures your optical axis remains perfectly aligned from the corrector to the sensor, which is critical for achieving sharp stars across the entire field of view. The precise M54 threads feature a 0.75mm pitch, matching the standard used by most astronomy equipment manufacturers for a secure fit.\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 M68 Male to M54 Female Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is designed to connect an accessory with a male M68 thread, such as a field flattener or coma corrector, to a device that has a female M54 thread, like a filter wheel, off-axis guider, or certain camera bodies. It allows you to integrate components that would otherwise be incompatible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the thread pitch on the M54 side of the adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe M54 female thread on this adapter has a standard \u003cstrong\u003e0.75mm pitch\u003c\/strong\u003e. This is the most common pitch for M54 threads in astronomy, ensuring broad compatibility with equipment from various manufacturers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this adapter prevent flexure in my imaging setup?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBy creating a direct metal-on-metal threaded connection, the adapter forms a rigid joint between two components. This is mechanically superior to slip-fit or compression ring systems, which can allow for minute shifts or tilting as the telescope moves, thereby preserving the optical alignment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this M68 to M54 adapter add significant length to my imaging train?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThreaded adapters like this are typically designed to be as thin as possible while maintaining structural integrity. While it will add a small amount of optical path length, it is generally minimal and must be factored into your back focus calculations. Always measure your components to ensure you maintain the correct sensor distance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have a corrector with an M68 output. Can I use this adapter to connect my M54 filter wheel for imaging the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an ideal scenario for this adapter. It will allow you to securely attach your M54-threaded filter wheel directly to the M68 output of your corrector, creating a solid imaging train for capturing deep-sky targets like the Orion Nebula (M42).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this adapter suitable for connecting to a large format sensor on my refractor telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is excellent for creating a secure connection. However, be aware that stepping down from a larger M68 thread to a smaller M54 thread can introduce vignetting (darkening of the corners) on very large sensors, such as full-frame (35mm) or larger. It is best suited for APS-C and smaller sensors when placed close to the camera.\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\u003eMale Thread\u003c\/td\u003e\n\u003ctd\u003eM68x1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFemale Thread\u003c\/td\u003e\n\u003ctd\u003eM54x0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM54 Thread Pitch\u003c\/td\u003e\n\u003ctd\u003e0.75mm\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 M68 Male to M54 Female\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\u003cp\u003eNo downloads are available for this product.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThis product is covered by a 2-year manufacturer's warranty against defects in materials and workmanship.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pegasus Astro","offers":[{"title":"Default Title","offer_id":49171438600477,"sku":"PEG-ADAPT-M68M-M54F","price":39.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PEG-ADAPT-M68M-M54F.jpg?v=1726595765"}],"url":"https:\/\/davidastro.com\/fr\/collections\/pegasus-astro-adapters.oembed","provider":"David Astro","version":"1.0","type":"link"}