{"product_id":"primalucelab-pllest3arco3","title":"PrimaLuceLab ESATTO 3\" Focuser with ARCO 3\" Rotator","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eIntegrated 3\" Robotic Focuser and Rotator Bundle\u003c\/li\u003e\n\u003cli\u003e76.3mm Clear Aperture Through Entire Optical Path\u003c\/li\u003e\n\u003cli\u003e86.5mm Combined Thickness\u003c\/li\u003e\n\u003cli\u003eESATTO Focuser: 8kg Payload Capacity \u0026amp; 0.04 Micron Step Resolution\u003c\/li\u003e\n\u003cli\u003eARCO Rotator: 1 Arcsecond Step Resolution\u003c\/li\u003e\n\u003cli\u003eSingle USB Cable Control via ESATTO Port\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\u003eESATTO 3\" Focuser with ARCO 3\" Rotator\u003c\/h2\u003e\n\u003cp\u003eThis bundle combines the PrimaLuceLab ESATTO 3\" focuser and ARCO 3\" rotator into a single, remotely controlled unit with a total thickness of just 86.5mm and a large 76.3mm free aperture. The ESATTO provides an 8kg payload capacity with an incredible 0.04 micron per step resolution, while the ARCO rotator delivers 1 arc second per step precision for perfect framing and field de-rotation.\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\u003eESATTO 3\" Focuser: 8kg Payload and 0.04 Micron Precision\u003c\/h3\u003e\n\u003cp\u003eThe core of this system is the ESATTO 3\" robotic focuser, engineered to handle heavy, professional-grade imaging trains. Its 8kg payload capacity easily supports large format cameras, filter wheels, and off-axis guiders without flexure. With 25mm of draw tube travel and an outstanding resolution of 0.04 microns per step, you can achieve critical focus on high-resolution targets with any apochromatic refractor or Ritchey-Chrétien telescope.\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\u003eARCO 3\" Rotator: 1 Arcsecond Resolution for Framing and De-rotation\u003c\/h3\u003e\n\u003cp\u003eThe ARCO 3\" rotator provides exceptionally precise control over your camera's orientation. With a resolution of 1 arc second per step, it allows you to perfectly frame celestial objects or align with guide stars. When used with an equatorial mount, ARCO acts as a high-precision camera rotator; on an alt-azimuth mount, it functions as a field de-rotator, compensating for field rotation during long exposures.\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 Design: A Compact 86.5mm Profile with a Single USB Cable\u003c\/h3\u003e\n\u003cp\u003ePrimaLuceLab designed the ESATTO and ARCO to function as a single device. This bundle includes the necessary adapter to join them into a rigid unit that is only 86.5mm thick, preserving precious back focus. The entire system maintains a 76.3mm clear aperture, preventing vignetting with large sensors. Most importantly, a single short cable connects ARCO to ESATTO, which then connects to your computer via one USB cable, dramatically reducing cable clutter and potential snags.\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\u003eUnified Control: Full Remote Operation with PLAY and ASCOM\u003c\/h3\u003e\n\u003cp\u003eTake complete remote control of your imaging setup through a single software interface. The ESATTO 3\" and ARCO 3\" bundle is fully supported by ASCOM drivers, ensuring compatibility with virtually any Windows-based astrophotography software. For an even more streamlined experience, PrimaLuceLab's PLAY software provides native control, allowing you to manage focusing, rotation, and image capture from one intuitive platform.\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\"\u003eHow do the ESATTO 3\" and ARCO 3\" connect and get power?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe two units are designed for integrated operation. The ARCO rotator connects directly to a dedicated port on the ESATTO focuser with a short cable. The ESATTO then connects to your control computer with a single USB cable. This one cable handles data for both devices and often provides enough power. An external \u003cstrong\u003e12V power supply\u003c\/strong\u003e may be needed only if your computer's USB port cannot supply sufficient current.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the total back focus consumed by the ESATTO 3\" and ARCO 3\" bundle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe combined thickness of the ESATTO 3\" focuser, the ARCO 3\" rotator, and the connecting adapter is \u003cstrong\u003e86.5mm\u003c\/strong\u003e. This is the total amount of back focus required by the integrated unit in your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the ESATTO 3\" focuser handle a heavy imaging train on my Ritchey-Chrétien telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The ESATTO 3\" is specifically designed for this purpose. With a robust \u003cstrong\u003epayload capacity of 8kg\u003c\/strong\u003e, it can securely hold and precisely focus a full imaging setup, including a large format camera, a heavy filter wheel, and an off-axis guider, without introducing sag or flexure into the optical path.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow precise is the ARCO 3\" rotator for framing a target like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ARCO 3\" is exceptionally precise. It offers a rotational resolution of \u003cstrong\u003e1 arc second per step\u003c\/strong\u003e. This level of accuracy allows you to make minute adjustments to your camera's orientation, ensuring you can perfectly frame large targets like the Andromeda Galaxy (M31) or precisely align with a specific guide star for autoguiding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat software do I need to control the ESATTO 3\" and ARCO 3\" bundle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou have two main options. The bundle comes with \u003cstrong\u003eASCOM drivers\u003c\/strong\u003e, allowing you to control both the focuser and rotator from any ASCOM-compliant astrophotography software on Windows (such as N.I.N.A. or Sequence Generator Pro). Alternatively, you can use PrimaLuceLab's own \u003cstrong\u003ePLAY software\u003c\/strong\u003e for a deeply integrated, all-in-one control experience.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ARCO 3\" as a field de-rotator?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The ARCO 3\" is designed to function as both a camera rotator and a field de-rotator. Its role depends on your mount type. With an equatorial mount, you use it to frame your target. With an alt-azimuth mount, it can be controlled by software to actively counteract field rotation, enabling long-exposure deep-sky astrophotography.\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\u003eProduct Bundle\u003c\/td\u003e\n\u003ctd\u003eESATTO 3\" Focuser \u0026amp; ARCO 3\" Rotator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCombined Thickness\u003c\/td\u003e\n\u003ctd\u003e86.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFree Aperture\u003c\/td\u003e\n\u003ctd\u003e76.3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" class=\"DAV-spec-header\"\u003eESATTO 3\" Focuser\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePayload Capacity\u003c\/td\u003e\n\u003ctd\u003e8kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDraw Tube Travel\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution (per step)\u003c\/td\u003e\n\u003ctd\u003e0.04 microns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" class=\"DAV-spec-header\"\u003eARCO 3\" Rotator\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRotator Thickness\u003c\/td\u003e\n\u003ctd\u003e23mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution (per step)\u003c\/td\u003e\n\u003ctd\u003e1 arc second\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" class=\"DAV-spec-header\"\u003eConnectivity \u0026amp; Software\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Interface\u003c\/td\u003e\n\u003ctd\u003eUSB (to ESATTO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoftware Compatibility\u003c\/td\u003e\n\u003ctd\u003eASCOM, PrimaLuceLab PLAY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e12V DC (if USB power is insufficient)\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\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:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PrimaLuceLab_ESATTO_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\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\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":52913369612573,"sku":"PLLEST3ARCO3","price":3269.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PrimaLuceLab-ESATTO-3-focuser-with-ARCO-3-rotator-1_d41c1d01-f347-4f36-a32e-e1ab17990de1.jpg?v=1789089985","url":"https:\/\/davidastro.com\/fr\/products\/primalucelab-pllest3arco3","provider":"David Astro","version":"1.0","type":"link"}