{"product_id":"primalucelab-pl8410010","title":"PrimaLuceLab 3\" Visual Back for ESATTO 3\" and ARCO 3\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdapts M81 threads to accept 3-inch accessories\u003c\/li\u003e\n\u003cli\u003eDesigned for the PrimaLuceLab ESATTO 3\" Focuser\u003c\/li\u003e\n\u003cli\u003eCompatible with the PrimaLuceLab ARCO 3\" Rotator\u003c\/li\u003e\n\u003cli\u003eInternal brass compression ring prevents marring\u003c\/li\u003e\n\u003cli\u003eThree locking screws provide a secure, centered grip\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\u003e3\" Visual Back for ESATTO 3\" and ARCO 3\"\u003c\/h2\u003e\n\u003cp\u003eSecurely adapt your PrimaLuceLab ESATTO 3\" focuser or ARCO 3\" rotator for use with 3-inch accessories using this dedicated visual back. It provides a solid, non-marring connection via its M81 thread, ensuring your heavy cameras, diagonals, and eyepieces are held perfectly coaxial with your optical 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\u003eSecure M81 to 3-inch Connection for ESATTO and ARCO\u003c\/h3\u003e\n\u003cp\u003eThis adapter threads directly onto the M81 drawtube of your ESATTO 3\" or ARCO 3\", converting it to a standard 3-inch opening. The design prioritizes the safety of your equipment, incorporating a soft brass compression ring that grips accessories firmly without leaving scratches or gouges on their barrels.\u003c\/p\u003e\n\u003cp\u003eFor heavy imaging trains or large visual accessories, three locking screws are positioned around the barrel. This three-point system allows you to apply even pressure, guaranteeing a perfectly centered and rigid connection that prevents any tilt or flexure during an imaging session or when slewing the telescope.\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 function of the 3\" visual back for ESATTO 3\" and ARCO 3\"?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis visual back is designed to connect accessories with a standard \u003cstrong\u003e3-inch nosepiece\u003c\/strong\u003e, such as diagonals, eyepieces, or certain cameras, to the \u003cstrong\u003eM81 female thread\u003c\/strong\u003e found on the drawtube 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 this 3\" visual back protect my accessories from scratches?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt features an \u003cstrong\u003einternal brass compression ring\u003c\/strong\u003e. Unlike simple set screws that dig directly into an accessory's barrel, this soft metal ring tightens evenly around the nosepiece, holding it securely without causing scratches, gouges, or other cosmetic damage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan this visual back securely hold a heavy imaging camera on an ESATTO 3\" focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The adapter is equipped with \u003cstrong\u003ethree locking screws\u003c\/strong\u003e arranged around the barrel. This allows you to create a robust, centered, and tilt-free connection that is essential for supporting heavy cameras, filter wheels, and other imaging accessories without flexure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich PrimaLuceLab products is this 3\" visual back compatible with?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is specifically designed for PrimaLuceLab products that use an M81-threaded drawtube. This includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eESATTO 3\"\u003c\/strong\u003e Robotic Microfocuser\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARCO 3\"\u003c\/strong\u003e Robotic Rotator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI want to use a 3-inch diagonal for visual on my SCT with an ESATTO 3\" focuser. Is this the right adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is the correct adapter. It will thread onto your ESATTO 3\" focuser and provide the standard 3-inch receptacle needed to insert and secure your 3-inch diagonal, allowing you to build a robust visual train for your telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I'm building an imaging train with an ESATTO 3\" and ARCO 3\" on my refractor, what role does this visual back play?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIn an imaging train, this visual back serves as the final connection point if your camera or off-axis guider has a 3-inch nosepiece. It ensures a solid, coaxial link between your rotator\/focuser stack and your imaging sensor, which is critical for maintaining sharp, round stars across the field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\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":52913376723229,"sku":"PLL-PL8410010","price":119.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PrimaLuceLab-3-visual-back-for-ESATTO-3-and-ARCO-3-1_092a4427-cd62-4232-b970-23632e584094.jpg?v=1789090066","url":"https:\/\/davidastro.com\/fr\/products\/primalucelab-pl8410010","provider":"David Astro","version":"1.0","type":"link"}