{"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":27.5,"currency_code":"USD","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-us\/products\/pegasus-m68-male-to-m54-female","provider":"David Astro","version":"1.0","type":"link"}