{"product_id":"primalucelab-pl3600350","title":"PrimaLuceLab Adapter from M81 to M65 with stop ring for ESATTO 3\" and ARCO 3\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdapts the M81 thread of ESATTO 3\" and ARCO 3\" systems to an M65 male thread\u003c\/li\u003e\n\u003cli\u003eEnables direct connection of cameras and accessories with M65 female threads\u003c\/li\u003e\n\u003cli\u003eIntegrated M65 stop ring allows for precise rotational adjustment\u003c\/li\u003e\n\u003cli\u003eProvides rigid, secure framing for your imaging train\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 from M81 to M65 with stop ring for ESATTO 3\" and ARCO 3\"\u003c\/h2\u003e\n\u003cp\u003eThis adapter seamlessly converts the M81 thread of your PrimaLuceLab ESATTO 3\" focuser or ARCO 3\" rotator to a male M65 thread, enabling a direct, secure connection for M65-threaded accessories. An integrated M65 stop ring provides critical rotational control, ensuring your camera sensor can be perfectly aligned when attached to your 3-inch ESATTO or ARCO imaging system.\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 M81 to M65 Adaptation for ESATTO 3\" and ARCO 3\"\u003c\/h3\u003e\n\u003cp\u003eDesigned specifically for the PrimaLuceLab 3-inch ecosystem, this adapter provides the essential mechanical link between the M81 drawtube thread and the common M65 thread found on many cameras and accessories. By threading this adapter directly onto your ESATTO 3\" or ARCO 3\", you create a solid, flex-free foundation for your imaging train without relying on less secure compression fittings.\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\u003ePrecise Camera Framing: The Integrated M65 Stop Ring\u003c\/h3\u003e\n\u003cp\u003eThe key feature of this adapter is the M65 stop ring. This independent locking collar allows you to achieve perfect framing by fixing your camera at any rotational angle. Simply thread your camera onto the adapter, rotate it to the desired orientation, and then tighten the stop ring against the camera body to lock it securely in place, preventing any unwanted rotation during an imaging 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 purpose of the PrimaLuceLab M81 to M65 adapter for ESATTO 3\"?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter's primary function is to connect cameras or other imaging accessories that have a female \u003cstrong\u003eM65 thread\u003c\/strong\u003e to the male \u003cstrong\u003eM81 thread\u003c\/strong\u003e found on the draw tube of the PrimaLuceLab ESATTO 3\" robotic focuser and ARCO 3\" robotic rotator.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the M65 stop ring on this adapter work?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe stop ring is a separate locking collar on the M65 thread. It allows you to precisely set the rotation of your camera. You can thread your camera on, back it off slightly to get the perfect orientation, and then tighten the stop ring against the camera body to lock it firmly in that position.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have an ESATTO 3\" on my Ritchey-Chrétien telescope; is this the correct adapter for my M65-threaded camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. If you have an ESATTO 3\" focuser, regardless of the telescope it's mounted on, this adapter is the correct component to securely attach any accessory or camera that uses an M65 female thread.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen imaging the Veil Nebula (NGC 6960), why is the stop ring on the M81 to M65 adapter useful?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe stop ring is critical for framing large, elongated targets like the Veil Nebula (NGC 6960). It allows you to precisely orient your camera's sensor to align with the shape of the nebula, ensuring you can capture its full extent within your field of view without leaving the threaded connection loose.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this M81 to M65 adapter with the smaller ESATTO 2\" focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter is not compatible with the 2-inch model. It is designed exclusively for the large M81 thread present on the \u003cstrong\u003eESATTO 3\"\u003c\/strong\u003e and \u003cstrong\u003eARCO 3\"\u003c\/strong\u003e systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMy camera ends up upside-down when I fully tighten it onto the M81 to M65 adapter. How do I fix this?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis is the exact problem the integrated M65 stop ring solves. First, ensure the stop ring is loosened. Thread on your camera until it is snug, then carefully rotate it backward until it is correctly oriented. Finally, tighten the stop ring firmly against the base of your camera to lock it in the correct position.\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\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003ePrimaLuceLab ESATTO 3\", ARCO 3\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\/Rotator Side Thread\u003c\/td\u003e\n\u003ctd\u003eM81 Female (to connect to M81 male thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera\/Accessory Side Thread\u003c\/td\u003e\n\u003ctd\u003eM65 Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustment Feature\u003c\/td\u003e\n\u003ctd\u003eIntegrated M65 Stop Ring for Rotational Lock\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 from M81 to M65 with stop ring\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\/primalucelab-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003ePrimaLuceLab 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PrimaLuceLab","offers":[{"title":"Default Title","offer_id":52913376592157,"sku":"PLL-PL3600350","price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PrimaLuceLab-Adapter-from-M81-to-M65-with-stop-ring-for-ESATTO-3-and-ARCO-3-1_cecced21-42cd-41e1-a658-18cf78d90b7b.jpg?v=1789090059","url":"https:\/\/davidastro.com\/en-us\/products\/primalucelab-pl3600350","provider":"David Astro","version":"1.0","type":"link"}