{"product_id":"primalucelab-pl3600547","title":"PrimaLuceLab Adapter from M60 to M54 with stop ring for ESATTO 2” LP","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects M54 threaded accessories to the ESATTO 2” LP focuser\u003c\/li\u003e\n\u003cli\u003eConverts M60 male thread to M54 female thread\u003c\/li\u003e\n\u003cli\u003eAdds only 2.5mm of optical thickness with the stop ring installed\u003c\/li\u003e\n\u003cli\u003eAdds zero optical thickness when the stop ring is removed\u003c\/li\u003e\n\u003cli\u003eIntegrated stop ring allows for precise 360° camera rotation and framing\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 M60 to M54 with stop ring for ESATTO 2” LP\u003c\/h2\u003e\n\u003cp\u003eThe Adapter for ESATTO 2” LP converts the focuser's native M60 thread to a standard M54 connection for cameras and accessories. It maintains a minimal light path, adding only 2.5mm of optical thickness with its stop ring installed, or zero thickness when the ring is removed for systems with critical backfocus requirements.\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\u003eM60 to M54 Conversion with a 2.5mm Profile\u003c\/h3\u003e\n\u003cp\u003eThis adapter creates the essential M60 male to M54 female threaded connection needed to attach modern imaging trains to the ESATTO 2\" LP focuser. With the stop ring in place, the adapter contributes a minimal 2.5mm to the optical path, preserving precious backfocus. For setups where every millimeter is critical, removing the stop ring reduces the added optical thickness to zero.\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 M54 Camera Framing with the Integrated Stop Ring\u003c\/h3\u003e\n\u003cp\u003eThe key feature of this adapter is the integrated M54 stop ring. This mechanism allows you to thread your camera or accessory on, then lock its rotational position precisely. This is critical for optimally framing targets like the Horsehead Nebula (Barnard 33) or aligning your sensor with the axes of your mount.\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 purpose of the M60 to M54 adapter for the ESATTO 2” LP?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts primary function is to allow you to connect cameras, off-axis guiders, filter wheels, or any other accessory with a standard M54x0.75 female thread to the M60 draw tube of the PrimaLuceLab ESATTO 2” LP focuser.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the stop ring on the M60 to M54 adapter help when imaging a target like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe stop ring lets you rotate your camera to the perfect angle to fit a large object like the Andromeda Galaxy (M31) within your sensor's frame. Once you find the ideal orientation, you can lock it in place, ensuring your composition doesn't shift during an imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the optical thickness of the ESATTO 2” LP M60 to M54 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter has two optical thickness configurations depending on your needs:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWith Stop Ring:\u003c\/strong\u003e Adds \u003cstrong\u003e2.5mm\u003c\/strong\u003e to the optical path.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWithout Stop Ring:\u003c\/strong\u003e Adds \u003cstrong\u003ezero\u003c\/strong\u003e thickness, which is ideal for imaging setups with very limited backfocus.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this ESATTO 2\" LP adapter with a different brand of focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is specifically designed for the M60 male thread on the ESATTO 2” LP draw tube. While it might physically thread into other focusers with an M60 thread, its optical thickness and stop ring function are optimized for the PrimaLuceLab ecosystem and correct fit is not guaranteed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I connect my camera to a Celestron RASA using the ESATTO 2” LP, why is the 'zero thickness' option important?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFast optical systems like a RASA have extremely critical backfocus tolerances. By removing the stop ring, the adapter's optical thickness becomes zero, consuming none of your available backfocus. This helps ensure you can place your camera sensor at the telescope's precise focal plane for sharp stars across the entire field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes removing the stop ring affect my ability to connect M54 accessories to the ESATTO 2\" LP?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, you can still securely thread any M54 accessory directly to the adapter. You will simply lose the ability to lock the rotation at a specific angle. The primary M60-to-M54 conversion function remains the same.\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\u003eFocuser Side Thread\u003c\/td\u003e\n\u003ctd\u003eM60 Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Thread\u003c\/td\u003e\n\u003ctd\u003eM54 Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesigned For\u003c\/td\u003e\n\u003ctd\u003ePrimaLuceLab ESATTO 2” LP Focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Thickness (with Stop Ring)\u003c\/td\u003e\n\u003ctd\u003e2.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Thickness (without Stop Ring)\u003c\/td\u003e\n\u003ctd\u003e0mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRotational Adjustment\u003c\/td\u003e\n\u003ctd\u003eYes, via included stop ring\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 M60 to M54 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":52913374331165,"sku":"PLL-PL3600547","price":175.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PrimaLuceLab-Adapter-from-M60-to-M54-with-stop-ring-for-ESATTO-2-LP-1_b225cf28-aa6f-4830-89d9-37defb3f36b4.jpg?v=1789090042","url":"https:\/\/davidastro.com\/products\/primalucelab-pl3600547","provider":"David Astro","version":"1.0","type":"link"}