{"title":"PrimaLuceLab Focusers","description":"\u003cp\u003ePrimaLuceLab focusers cover two approaches to motorized focus. ESATTO robotic focusers replace the original focuser and come in 2\", 2\" LP, 3\", 3.5\" LP and 4\" sizes, some combined with an ARCO rotator. SESTO SENSO 3 robotic focusing motors attach to an existing focuser instead.\u003c\/p\u003e\u003cp\u003eThe SESTO SENSO 3 SC version suits Schmidt-Cassegrain focus knobs, and the LS version drives telephoto lenses. All are designed for precise, repeatable focus in automated imaging.\u003c\/p\u003e","products":[{"product_id":"primalucelab-esatto-2-robotic-microfocuser","title":"PrimaLuceLab ESATTO 2\" Robotic microFocuser","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eRobotic microfocuser with integrated motor and controller\u003c\/li\u003e\n\u003cli\u003eLow-profile body ideal for systems with limited backfocus\u003c\/li\u003e\n\u003cli\u003eSupports heavy astrophotography payloads without flexure\u003c\/li\u003e\n\u003cli\u003eControl via USB-C from a PC or EAGLE, or wirelessly via WiFi\u003c\/li\u003e\n\u003cli\u003eDedicated ARCO port for single-cable camera rotator integration\u003c\/li\u003e\n\u003cli\u003eASCOM driver for compatibility with third-party automation software\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\u003ePrimaLuceLab ESATTO 2\" Robotic microFocuser\u003c\/h2\u003e\n\u003cp\u003eThe PrimaLuceLab ESATTO 2\" Robotic microFocuser is an all-in-one focusing solution, integrating a powerful motor and advanced electronics directly into a compact focuser body. It provides the high-precision, repeatable focus adjustments required for modern astrophotography, supporting heavy camera payloads without introducing image shift. Control is managed directly from a Windows computer or EAGLE via a USB-C connection, or wirelessly from a smartphone or tablet using its built-in WiFi and the Virtual HandPad app.\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\u003eRobotic Micro-Focusing for Heavy Imaging Payloads\u003c\/h3\u003e\n\u003cp\u003eDesigned specifically for astrophotography, the ESATTO replaces stock focusers that often suffer from flexure and imprecision. Its special Crayford mechanism, supported by numerous internal ball bearings, ensures exceptionally smooth draw tube movement, allowing it to handle the weight of cooled cameras, filter wheels, and other accessories with a high payload capacity. This rigidity is critical for automated focusing routines, enabling software to achieve sharp, repeatable focus without mechanical slop or backlash.\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 Control via USB-C, WiFi, and ASCOM\u003c\/h3\u003e\n\u003cp\u003eThe ESATTO eliminates the need for external motor controllers and cumbersome hand pads. For full-session remote control, connect it to any Windows computer or PrimaLuceLab EAGLE unit with the included USB-C cable to use the PLAY astrophotography software or the provided ASCOM driver. For visual use or quick adjustments at the telescope, the built-in WiFi allows you to connect wirelessly from any smartphone or tablet and use the Virtual HandPad app, giving you complete control without being tethered to a computer.\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\u003eLow-Profile Design with Seamless ARCO Rotator Connection\u003c\/h3\u003e\n\u003cp\u003eWith its compact, low-profile body, the ESATTO is an ideal upgrade for telescopes where backfocus is limited, such as Schmidt-Cassegrains and EdgeHD systems. This design minimizes the focuser's depth, leaving more room for your imaging train. The ESATTO also features a dedicated port for the ARCO robotic camera rotator, allowing the two devices to connect directly with a single cable for both power and data. This integration simplifies cable management and unifies control of both focusing and field rotation within the PrimaLuceLab ecosystem.\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 makes the PrimaLuceLab ESATTO 2\" focuser \"robotic\"?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \"robotic\" designation means the \u003cstrong\u003emotor, controller, and all electronics are built directly into the focuser body\u003c\/strong\u003e. This all-in-one design eliminates the need for external control boxes or separate motors, simplifying your setup and cable management. You can control it remotely from a computer, smartphone, or tablet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ESATTO 2\" a good focuser for a Celestron EdgeHD 800 or SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it's an excellent choice. Its low-profile design is critical for SCT and EdgeHD telescopes that have limited backfocus. By using an external focuser like the ESATTO, you can achieve much finer focus adjustments and completely avoid the \"mirror flop\" or \"image shift\" common with the stock internal focusing mechanism.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I connect the ARCO rotator to the ESATTO 2\" microFocuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ESATTO 2\" features a dedicated \u003cstrong\u003eARCO port\u003c\/strong\u003e specifically for this purpose. You connect the ARCO rotator directly to the ESATTO with a single, short cable. This one cable provides both power and data to the rotator, so you don't need to run additional power or USB cables from your main computer or power supply to the ARCO.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the PrimaLuceLab ESATTO 2\" for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. While designed for astrophotography, the ESATTO is also great for visual use. You can connect to its built-in WiFi network with your smartphone or tablet and use the \u003cstrong\u003eVirtual HandPad app\u003c\/strong\u003e. This lets you make fine focus adjustments electronically without touching the telescope, which is especially useful at high magnifications to prevent vibrations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat software is compatible with the ESATTO 2\" focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ESATTO 2\" works with PrimaLuceLab's own \u003cstrong\u003ePLAY software\u003c\/strong\u003e for an integrated experience. It also comes with an \u003cstrong\u003eASCOM driver\u003c\/strong\u003e, making it compatible with most third-party astrophotography software, such as N.I.N.A., Sequence Generator Pro (SGP), and others that support the ASCOM standard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow is the ESATTO 2\" powered?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ESATTO 2\" can be powered and controlled through its \u003cstrong\u003eUSB-C port\u003c\/strong\u003e when connected to a computer port capable of supplying sufficient current. For setups where the USB port power is insufficient, or for standalone WiFi operation, it can be powered via a standard 12V DC input (power adapter not included).\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\u003eid\u003c\/td\u003e\n\u003ctd\u003e#product-snippet-id\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":44967861027101,"sku":"PLL-PLLEST2","price":850.5,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/image__38479.1639679503.1280.1280.jpg?v=1684346153"},{"product_id":"primalucelab-esatto-3-robotic-microfocuser","title":"PrimaLuceLab ESATTO 3\" Robotic microFocuser","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e76.3mm Clear Aperture\u003c\/li\u003e\n\u003cli\u003e8 kg Payload Capacity\u003c\/li\u003e\n\u003cli\u003e25mm Draw Tube Travel\u003c\/li\u003e\n\u003cli\u003e0.04 Micron per Step Resolution\u003c\/li\u003e\n\u003cli\u003eASCOM, WiFi, and USB-C Control\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\u003ePrimaLuceLab ESATTO 3\" Robotic microFocuser\u003c\/h2\u003e\n\u003cp\u003eThe PrimaLuceLab ESATTO 3\" Robotic microFocuser combines a massive 76.3mm clear aperture with an 8 kg payload capacity, designed for large refractors and cassegrains with heavy imaging trains. Its 25mm of draw tube travel is controlled with a resolution of 0.04 microns per step, ensuring absolute precision for achieving critical focus. A low profile of just 58mm and a weight of 1345 grams keeps the entire assembly compact and manageable on your 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\u003eCrayford Design: 8 kg Payload Capacity with Zero Flexure\u003c\/h3\u003e\n\u003cp\u003eEngineered for heavy instrumentation, the ESATTO 3\" utilizes a Crayford-style mechanism supported by 28 ball bearings. This design provides the rigidity needed to carry an 8 kg imaging train—including large format cameras, filter wheels, and off-axis guiders—without introducing sag or flexure. With a minimal thickness of only 58mm, it adds very little length to your optical path, preserving back focus for complex accessory configurations.\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\u003eRobotic Precision: 25mm of Travel at 0.04 Micron Resolution\u003c\/h3\u003e\n\u003cp\u003eThe core of the ESATTO 3\" is its high-resolution stepper motor, which moves the drawtube in increments as small as 0.04 microns. This level of precision is critical for automated focusing routines on fast optical systems, like Ritchey-Chrétiens or refractors with reducers, where the critical focus zone is exceptionally narrow. The 25mm of total travel gives you ample range to accommodate different cameras and accessories without needing to reconfigure your setup.\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\u003eAll-in-One Control: WiFi, USB-C, and ASCOM Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe ESATTO 3\" eliminates the need for external motor controllers by integrating all electronics into its housing. You can connect and power it via a modern USB-C port from an EAGLE or any Windows computer, with a full ASCOM driver for compatibility with software like N.I.N.A. or SGP. For computer-free operation, built-in WiFi lets you control the focuser from a smartphone or tablet using the Virtual HandPad app, perfect for both visual observing and remote setup.\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\u003eEcosystem Ready: ARCO Port and M81x1 Camera Connection\u003c\/h3\u003e\n\u003cp\u003eDesigned for seamless integration, the ESATTO 3\" features a dedicated ARCO port that provides both power and data to the optional ARCO robotic rotator. This single-cable connection dramatically simplifies wire management at the telescope. The drawtube terminates in a secure M81x1 male thread, allowing you to attach your camera via optional stop-ring adapters for a rigid, perfectly orthogonal connection that is superior to standard 2\" 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\u003eESATTO 3\" vs. ESATTO 2\": The 76.3mm Aperture Advantage\u003c\/h3\u003e\n\u003cp\u003eThe primary distinction between the ESATTO 3\" and its 2\" sibling is the clear aperture. The 3\" model provides a 76.3mm light path, a significant increase over the 51mm aperture of the 2\" version. This makes the ESATTO 3\" essential for preventing vignetting when using large-format sensors (APS-C and full-frame) or when installing focal reducers and correctors inside the optical train. For large refractors, RCs, or Cassegrains, the 3\" aperture is required to fully illuminate the field.\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 advantage of the ESATTO 3\" over the 2\" model?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is the \u003cstrong\u003e76.3mm clear aperture\u003c\/strong\u003e, compared to 51mm on the 2\" model. This is critical for illuminating large camera sensors and avoiding vignetting with focal reducers on telescopes like large Ritchey-Chrétiens or apochromatic refractors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I control the ESATTO 3\" focuser without a computer at the telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e The ESATTO 3\" has built-in WiFi, allowing you to connect directly from a smartphone or tablet using the \u003cstrong\u003eVirtual HandPad app\u003c\/strong\u003e for precise remote focusing. This is ideal for visual use or for making adjustments without a dedicated PC.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ESATTO 3\" connect to my camera to prevent flexure?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt uses a secure \u003cstrong\u003eM81x1 male thread\u003c\/strong\u003e on the drawtube. Optional adapters with stop rings are available to create a rigid, threaded connection to your specific camera, eliminating the sag and tilt common with standard 2\" compression-ring visual backs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the ARCO port on the ESATTO 3\"?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ARCO port provides both \u003cstrong\u003epower and data\u003c\/strong\u003e to the optional ARCO robotic rotator through a single, short cable. This means you only need one power\/data line running to the focuser, which then powers the rotator, greatly simplifying cable management at the back of your telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have a 12\" f\/8 Ritchey-Chrétien with a full-frame camera and filter wheel. Is the ESATTO 3\" strong enough?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eAbsolutely.\u003c\/strong\u003e The ESATTO 3\" is designed for this exact scenario. Its \u003cstrong\u003e8 kg payload capacity\u003c\/strong\u003e and 28-bearing Crayford design can handle heavy imaging trains without flexure, and the \u003cstrong\u003e76.3mm aperture\u003c\/strong\u003e ensures your full-frame sensor is fully illuminated without vignetting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the ESATTO 3\" work with my existing ASCOM-compatible software like N.I.N.A. or SGP?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e The ESATTO 3\" includes a dedicated ASCOM driver, allowing it to be controlled directly from any standard astrophotography software that supports the ASCOM platform. It will integrate seamlessly into your existing automated imaging workflow.\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 Type\u003c\/td\u003e\n\u003ctd\u003eRobotic Crayford\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e76.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDraw Tube Travel\u003c\/td\u003e\n\u003ctd\u003e25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePayload Capacity\u003c\/td\u003e\n\u003ctd\u003e8 kg\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\n\u003ctd\u003eMinimum Thickness\u003c\/td\u003e\n\u003ctd\u003e58 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBearings\u003c\/td\u003e\n\u003ctd\u003e28 ball bearings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1345 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Connection\u003c\/td\u003e\n\u003ctd\u003eM81x1 Male Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePC Connection\u003c\/td\u003e\n\u003ctd\u003eUSB-C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWireless Connection\u003c\/td\u003e\n\u003ctd\u003eWiFi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExpansion Port\u003c\/td\u003e\n\u003ctd\u003eARCO Port for Robotic Rotator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoftware Control\u003c\/td\u003e\n\u003ctd\u003ePLAY, ASCOM Driver, Virtual HandPad App\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\"\u003eESATTO 3\" Robotic microFocuser\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUSB-C to USB-A Cable\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\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":44967861092637,"sku":"PLL-PLLEST3","price":1190.7,"currency_code":"CAD","in_stock":true}]},{"product_id":"primalucelab-esatto-4-robotic-microfocuser","title":"PrimaLuceLab ESATTO 4\" Robotic microFocuser","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e102.2mm clear aperture\u003c\/li\u003e\n\u003cli\u003e10 kg payload capacity\u003c\/li\u003e\n\u003cli\u003e35mm of draw tube travel\u003c\/li\u003e\n\u003cli\u003e0.04 micron resolution per step\u003c\/li\u003e\n\u003cli\u003eUSB-C, WiFi, and ARCO port connectivity\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\u003ePrimaLuceLab ESATTO 4\" Robotic microFocuser\u003c\/h2\u003e\n      \u003cp\u003eThe PrimaLuceLab ESATTO 4\" Robotic microFocuser is engineered for observatory-class instruments, offering a massive 102.2mm clear aperture and a 10 kg payload capacity to support the heaviest imaging trains. It provides 35mm of precise draw tube travel, achieving an exceptional resolution of 0.04 microns per step for critical focusing. The focuser's low-profile design is only 65mm thick and connects via a modern USB-C port for computer control or built-in WiFi for its mobile Virtual HandPad.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003e102.2mm Aperture and 10 kg Payload for Large Astrographs\u003c\/h3\u003e\n      \u003cp\u003eDesigned to serve large professional telescopes, the ESATTO 4\" eliminates vignetting on astrographs with wide, corrected image circles. Its 102.2mm free aperture ensures the entire light cone reaches your full-frame or larger sensor. A robust payload capacity of 10 kg supports heavy imaging setups, including large format cameras, filter wheels, and off-axis guiders, without flexure.\u003c\/p\u003e\n      \u003cp\u003eThis rigidity is achieved through a sophisticated design incorporating 40 bearings, which guarantees smooth, precise movement even when the telescope is aimed near the zenith. Despite its strength, the focuser maintains a slim 65mm profile, minimizing the impact on your telescope's back focus requirements.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n    \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003e0.04 Micron Resolution with USB-C and WiFi Control\u003c\/h3\u003e\n      \u003cp\u003eThe ESATTO 4\" achieves its 0.04-micron resolution through advanced motor control, allowing you to hit the critical focus zone with absolute precision on even the fastest optical systems. You can connect and control the focuser via the reliable, reversible USB-C port from any Windows computer or a PrimaLuceLab EAGLE controller, using the provided ASCOM driver or PLAY astrophotography software.\u003c\/p\u003e\n      \u003cp\u003eFor operation without a computer, the ESATTO 4\" features built-in WiFi. This allows you to connect directly from any smartphone, tablet, or computer to use the Virtual HandPad app, giving you complete control for visual observation or at-the-telescope adjustments.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eARCO Integration: 1 Port for Power and Data\u003c\/h3\u003e\n      \u003cp\u003eThe ESATTO 4\" includes a dedicated ARCO port, streamlining its integration with the PrimaLuceLab ARCO robotic rotator. This port provides both power and data to the rotator through a single cable, eliminating the cable management challenges of separate USB and 12V power lines.\u003c\/p\u003e\n      \u003cp\u003eWhen paired, ESATTO and ARCO create a fully robotic focusing and framing system. From your control computer, you can precisely adjust focus and rotate your camera to perfectly frame deep-sky objects. For observers with alt-azimuth mounts, ARCO also functions as a field de-rotator, enabling long-exposure astrophotography without an equatorial wedge.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eA Custom Solution for the Takahashi FSQ-106\u003c\/h3\u003e\n      \u003cp\u003eThe ESATTO 4\" is the ideal focusing solution for the Takahashi FSQ-106 astrograph, whose large internal corrector demands a focuser with a correspondingly large aperture. PrimaLuceLab has designed optional adapters that allow the ESATTO 4\" to replace the stock focuser seamlessly.\u003c\/p\u003e\n      \u003cp\u003eThis adapter kit ensures the ESATTO 4\" combination has the same optical thickness as the original focuser. It also converts the drawtube's M110x1 thread to the M92x1 female thread found on the original, allowing you to reuse your existing camera adapters and spacers to reach focus without recalculating your imaging train.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eESATTO 4\" vs. ESATTO 3\" and 2\": Matching the Focuser to Your Telescope\u003c\/h3\u003e\n      \u003cp\u003eAs the largest model in the ESATTO family, the 4\" version is specifically for large instruments where aperture is paramount. The primary differences lie in physical capacity and intended application.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eESATTO 4\":\u003c\/strong\u003e With its 102.2mm aperture and 10 kg payload, this is the choice for observatory telescopes and large-format astrographs like the FSQ-106, where preventing vignetting is the top priority.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eESATTO 3\" and 2\":\u003c\/strong\u003e These smaller models offer the same core robotic technology but in a more compact and lighter package suitable for smaller refractors, Newtonians, and SCTs. They are the better choice when the massive aperture of the 4\" model is not required, as their lower weight (the 4\" weighs 2050 g) makes balancing the telescope easier.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the ESATTO 4\" necessary for a telescope like the Takahashi FSQ-106?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe Takahashi FSQ-106 astrograph uses a large internal corrector lens that produces a very wide, flat, and well-illuminated image circle. The \u003cstrong\u003eESATTO 4\"'s large 102.2mm clear aperture\u003c\/strong\u003e is required to pass this entire light cone without vignetting, ensuring the field is evenly illuminated right to the corners of a large sensor.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I control the ESATTO 4\" focuser without a computer?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes. The ESATTO 4\" has \u003cstrong\u003ebuilt-in WiFi\u003c\/strong\u003e, allowing you to connect to it directly from any smartphone, tablet, or computer. Using the free Virtual HandPad application, you can control all focusing functions wirelessly, which is ideal for visual observing or making quick adjustments at the telescope.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the ARCO port on the ESATTO 4\"?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe dedicated ARCO port allows you to connect a PrimaLuceLab ARCO robotic rotator directly to the focuser with a single, short interconnect cable. This one cable provides both \u003cstrong\u003epower and data control\u003c\/strong\u003e to the rotator, completely eliminating the need for separate USB and 12V power cables running to your camera assembly, which greatly simplifies cable management.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the focusing resolution of the ESATTO 4\" and why is it important?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe ESATTO 4\" has a positioning resolution of \u003cstrong\u003e0.04 microns per step\u003c\/strong\u003e. This extremely fine level of control is critical for astrophotography with fast, high-resolution optical systems where the critical focus zone (CFZ) is exceptionally narrow. This precision ensures you can achieve the sharpest possible focus that your optics and seeing conditions will allow.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIf I install the ESATTO 4\" on my FSQ-106, will I need all new camera adapters?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNot necessarily. PrimaLuceLab offers an optional adapter kit specifically for the Takahashi FSQ-106. This kit is designed to make the ESATTO 4\" maintain the \u003cstrong\u003esame optical thickness\u003c\/strong\u003e as the original focuser and provides the same \u003cstrong\u003eM92x1 thread\u003c\/strong\u003e. This clever design allows you to reuse your existing camera adapters and spacers, ensuring you can reach focus correctly.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the maximum payload of the ESATTO 4\" focuser?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe ESATTO 4\" can handle a total imaging payload of up to \u003cstrong\u003e10 kg (22 lbs)\u003c\/strong\u003e. This substantial capacity is designed for heavy, professional-level imaging trains that may include a large format cooled camera, a heavy 7-position filter wheel, an off-axis guider, and other accessories without introducing flexure or slippage.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eESATTO 4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eRobotic Microfocuser\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e102.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDraw Tube Travel\u003c\/td\u003e\n\u003ctd\u003e35 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003ePayload Capacity\u003c\/td\u003e\n\u003ctd\u003e10 kg (22 lbs)\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\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e65 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2050 g (4.5 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003ePC Connection\u003c\/td\u003e\n\u003ctd\u003eUSB-C Port\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eWireless Connection\u003c\/td\u003e\n\u003ctd\u003eWiFi with Virtual HandPad\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eRotator Port\u003c\/td\u003e\n\u003ctd\u003eDedicated ARCO Port\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSoftware Support\u003c\/td\u003e\n\u003ctd\u003eASCOM Driver, PLAY Software\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\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\"\u003eESATTO 4\" Robotic microFocuser\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n    \u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eUSB-C Cable\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\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\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":44967861879069,"sku":"PLL-PLLEST4","price":1757.7,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/PrimaLuceLab-ESATTO-4-robotic-microfocuser__18256.1617396014.1280.1280.jpg?v=1684346164"},{"product_id":"primalucelab-esatto-4-focuser-with-arco-3-rotator","title":"PrimaLuceLab ESATTO 4\" Focuser with ARCO 3\" rotator","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eRobotic focuser and high-resolution rotator bundle\u003c\/li\u003e\n\u003cli\u003eEngineered for large, observatory-class telescopes and astrographs\u003c\/li\u003e\n\u003cli\u003eHigh payload capacity to support heavy imaging trains\u003c\/li\u003e\n\u003cli\u003eIntegrated single-cable power and data connectivity\u003c\/li\u003e\n\u003cli\u003eASCOM and native PLAY software compatibility\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\u003ePrimaLuceLab ESATTO 4\" Focuser with ARCO 3\" Rotator\u003c\/h2\u003e\n\u003cp\u003eThe PrimaLuceLab ESATTO 4\" Focuser with ARCO 3\" rotator bundle combines a large-aperture robotic focuser with a high-resolution rotator in a single, integrated package. This system is engineered for observatory-class telescopes and heavy imaging trains, enabling precise, remote control over both critical focus and image framing. The entire bundle connects to your control computer with a single USB cable, dramatically simplifying cable management for complex rigs.\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 4\" Focuser: Robotic Precision for Large Astrographs\u003c\/h3\u003e\n\u003cp\u003eDesigned specifically for large instruments like the Takahashi FSQ-106 and custom observatory astrographs, the ESATTO 4\" provides the aperture and strength necessary for serious imaging. Its large free aperture minimizes vignetting with full-frame and larger sensors, while the high payload capacity ensures zero flexure, even with heavy filter wheels, off-axis guiders, and large format cameras. The zero-shift mechanism maintains perfect optical alignment through the entire range of travel.\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: High-Resolution Framing and Field De-rotation\u003c\/h3\u003e\n\u003cp\u003eThe ARCO 3\" rotator offers exceptionally fine, repeatable control over your camera's orientation. For imagers with equatorial mounts, this allows you to precisely frame faint nebulae or galaxy groups without ever touching the telescope. When used with an alt-azimuth mount, the ARCO functions as a field de-rotator, actively counteracting field rotation to enable long, unguided exposures with round stars to the edge of the frame.\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 Control: Single-Cable Connectivity with ASCOM and PLAY\u003c\/h3\u003e\n\u003cp\u003eThis bundle is designed as a single electromechanical system. A single USB cable to the ESATTO focuser provides both data and power; the focuser then powers and controls the ARCO rotator via a short linking cable. This elegant solution eliminates the cable drag and extra power supplies typically required for two separate devices.\u003c\/p\u003e\n\u003cp\u003eFor software control, the system includes ASCOM drivers for full compatibility with popular third-party astrophotography software on Windows. You can also use PrimaLuceLab's own PLAY software, an integrated platform for controlling your entire imaging setup, from target selection on the planetarium to final image capture.\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 advantage of the PrimaLuceLab ESATTO 4\" and ARCO 3\" bundle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is seamless integration. The focuser and rotator are designed to work together, sharing power and data through a single USB connection to your computer. This simplifies cable management, reduces potential snag points, and provides unified control through ASCOM or PrimaLuceLab's PLAY software.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of telescopes is the ESATTO 4\" focuser designed for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ESATTO 4\" is built for large, heavy optical systems. It is an ideal match for observatory-class refractors, large astrographs like the Takahashi FSQ-106, and custom Ritchey-Chrétien telescopes that use large format sensors and heavy imaging trains. Its high payload capacity makes it unsuitable for smaller, portable setups where weight is a primary concern.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ARCO 3\" rotator work as a field de-rotator?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhen used with a telescope on an \u003cstrong\u003ealt-azimuth mount\u003c\/strong\u003e, the sky appears to rotate around the center of the field of view. The ARCO 3\", controlled by appropriate software, precisely counter-rotates your camera at the sidereal rate to cancel this effect. This allows you to take long exposures without the star trails that would otherwise occur.\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 PrimaLuceLab ESATTO 4\" and ARCO 3\"?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou have two main options. You can use any ASCOM-compliant software on Windows, such as Sequence Generator Pro (SGP), N.I.N.A., or Maxim DL. Alternatively, you can use PrimaLuceLab's proprietary \u003cstrong\u003ePLAY software\u003c\/strong\u003e, which is designed to integrate control of all their devices into a single application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this bundle simplify my imaging setup's cable management?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstead of running separate USB and 12V power cables for both a focuser and a rotator, this bundle requires only one. A single USB cable runs from your computer or hub to the ESATTO 4\" focuser. A short, included cable then connects the ESATTO to the ARCO 3\" rotator, delivering both power and commands and eliminating two long cable runs.\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\" rotator to perfectly frame targets like the Horsehead Nebula (B33)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. This is a primary function of the ARCO 3\" on an equatorial mount. After your mount slews to the target, you can use the rotator's high-resolution control to make fine rotational adjustments to your camera. This ensures you can achieve the exact composition you want for targets with specific orientations, like the Horsehead and Flame Nebula region, without having to physically rotate the entire imaging train.\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\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":44967966867741,"sku":"PLL-PLLEST4ARCO3","price":4109.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/esatto-4-focuser-with-arco-3-rotator__54024.1641495402.1280.1280.jpg?v=1684347354"},{"product_id":"primalucelab-esatto-2-lp-low-profile-robotic-focuser","title":"PrimaLuceLab ESATTO 2\" LP low profile robotic focuser","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eUltra-low 32mm profile designed for low-backfocus telescopes\u003c\/li\u003e\n\u003cli\u003e10mm of precise focuser travel\u003c\/li\u003e\n\u003cli\u003e5 kg (11 lbs) payload capacity for heavy imaging trains\u003c\/li\u003e\n\u003cli\u003e0.03 micron per step resolution for critical focusing\u003c\/li\u003e\n\u003cli\u003e50.9mm clear aperture minimizes vignetting\u003c\/li\u003e\n\u003cli\u003eIntegrated WiFi, USB-C, and dedicated ARCO rotator 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\u003ePrimaLuceLab ESATTO 2\" LP Low Profile Robotic Focuser\u003c\/h2\u003e\n\u003cp\u003eThe PrimaLuceLab ESATTO 2\" LP delivers robotic focusing to telescopes with minimal backfocus, engineered into a body just 32mm thick. It provides 10mm of precise travel with a remarkable resolution of 0.03 microns per step, easily supporting a full 5 kg imaging payload through its 50.9mm clear aperture. Designed specifically for instruments like the Celestron EdgeHD 8\", the ESATTO 2\" LP integrates WiFi, a modern USB-C port, and a dedicated ARCO rotator port, creating a complete remote focusing solution.\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\u003eA 32mm Profile: Solving Backfocus on Celestron EdgeHD 8\"\u003c\/h3\u003e\n\u003cp\u003eTelescopes like the Celestron EdgeHD 8\", especially when used with a focal reducer, present a significant challenge for adding a motorized focuser due to their limited backfocus. The ESATTO 2\" LP is designed to solve this problem with its exceptionally thin 32mm body. This compact form factor allows it to be installed without interfering with the telescope's primary mirror lock knobs or manual focuser, preserving critical space in the optical train for cameras, filter wheels, and off-axis guiders.\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\u003e5 kg Payload Capacity with 0.03 Micron Step Resolution\u003c\/h3\u003e\n\u003cp\u003eDespite its lightweight 730 gr chassis, the ESATTO 2\" LP handles imaging trains up to 5 kg (11 lbs) without flexure or slippage. This robust capacity ensures you can securely attach large sensor cameras, filter wheels, and other accessories. The focuser's precision is equally impressive, offering a repeatable step size of just 0.03 microns, which allows autofocusing software to achieve a level of sharpness that is impossible to attain by hand, especially on high-resolution planetary and deep-sky targets.\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\u003eTotal Control: USB-C, WiFi, and PLAY Astrophotography Software\u003c\/h3\u003e\n\u003cp\u003eThe ESATTO 2\" LP provides multiple methods for remote operation. A reliable, high-speed USB-C port connects the focuser to an EAGLE control unit or any Windows computer for control via the included ASCOM driver or PLAY astrophotography software. For wireless control, built-in WiFi lets you command the focuser from a smartphone or tablet using the ESATTO Virtual HandPad app, perfect for making fine adjustments at the eyepiece during visual observation or initial setup.\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-Ready: Native Integration for a 54.2mm Rotating Focuser\u003c\/h3\u003e\n\u003cp\u003eA dedicated ARCO port is built into the focuser body, allowing for the direct connection of the PrimaLuceLab ARCO robotic rotator. This unique port provides both power and data to the rotator, eliminating the need for extra cables that can snag in the dark. When the ESATTO 2\" LP is combined with the ARCO 2\" rotator, you get a fully remote-controlled rotating focuser system with a combined thickness of just 54.2mm, maintaining a compact profile while adding precise framing and field de-rotation capabilities.\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 does the ESATTO 2\" LP solve backfocus issues on a Celestron EdgeHD 8\"?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Celestron EdgeHD 8\", especially with its 0.7x reducer, has only 105mm of backfocus. The \u003cstrong\u003eESATTO 2\" LP's ultra-thin 32mm body\u003c\/strong\u003e consumes minimal space in the optical train, leaving enough room for your camera and other accessories. Its physical design also avoids collision with the telescope's mirror lock and manual focus knobs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the ESATTO 2\" LP handle a heavy imaging train with a large camera and filter wheel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The focuser is rated for a \u003cstrong\u003epayload capacity of 5 kg (11 lbs)\u003c\/strong\u003e. This is more than sufficient to support a typical deep-sky imaging setup, including a cooled astronomy camera, a multi-position filter wheel, and an off-axis guider, without introducing flexure or focus shift.\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 2\" LP from my computer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou can control the ESATTO 2\" LP from any Windows computer using the included \u003cstrong\u003eASCOM driver\u003c\/strong\u003e, which makes it compatible with most third-party astrophotography software. Alternatively, you can use PrimaLuceLab's own \u003cstrong\u003ePLAY software\u003c\/strong\u003e, which provides an integrated control environment for ESATTO focusers and ARCO rotators.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I control the ESATTO 2\" LP wirelessly for visual use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ESATTO 2\" LP has \u003cstrong\u003ebuilt-in WiFi\u003c\/strong\u003e. You can connect to its network with any smartphone or tablet and use the free \u003cstrong\u003eESATTO Virtual HandPad app\u003c\/strong\u003e to control focusing wirelessly. This is ideal for making fine adjustments at the eyepiece without touching the telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the ARCO port on the ESATTO 2\" LP?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe dedicated ARCO port allows you to connect a PrimaLuceLab ARCO rotator directly to the focuser. This single connection provides both \u003cstrong\u003epower and data\u003c\/strong\u003e to the rotator, eliminating the need for a separate 12V power cable and USB cable. This simplifies cable management and reduces the risk of snags during an imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 10mm travel of the ESATTO 2\" LP enough for focusing with different filters?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, for its intended use. The \u003cstrong\u003e10mm travel\u003c\/strong\u003e is designed for fine-tuning focus, not for large coarse adjustments. After achieving a rough focus with your telescope's manual focuser, the 10mm range is more than enough to compensate for the small focus shifts caused by changing filters (parfocal adjustments) or temperature changes during the night.\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 Type\u003c\/td\u003e\n\u003ctd\u003eRobotic Crayford Focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e32mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTravel\u003c\/td\u003e\n\u003ctd\u003e10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e50.9mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePayload Capacity\u003c\/td\u003e\n\u003ctd\u003e5 kg (11 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStep Resolution\u003c\/td\u003e\n\u003ctd\u003e0.03 microns per step\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e730 g (1.6 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnectivity\u003c\/td\u003e\n\u003ctd\u003eUSB-C, WiFi, ARCO Port, Temperature Probe Port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Connection\u003c\/td\u003e\n\u003ctd\u003eM60x1 female thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Connection\u003c\/td\u003e\n\u003ctd\u003eM56x1 female thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoftware Control\u003c\/td\u003e\n\u003ctd\u003eASCOM driver, PLAY software, Virtual HandPad App\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptional Accessories\u003c\/td\u003e\n\u003ctd\u003eAdapter from M60 to T2 with stop ring, Adapter from M60 to M48 with stop ring, Adapter from M60 to M54 with stop ring, 2\" visual back\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\"\u003eESATTO 2\" LP Robotic Focuser\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUSB-C Cable\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\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":45019668349213,"sku":"PLLEST2LP-B","price":1225.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ESATTO-2-LP-low-profile-robotic-focuser-banner-ENa.jpg?v=1685031292"},{"product_id":"primalucelab-esatto-3-5-lp-robotic-focuser","title":"PrimaLuceLab ESATTO 3.5\" LP Robotic Focuser","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eLow-profile robotic focuser designed for astrographs\u003c\/li\u003e\n\u003cli\u003eHigh payload capacity for heavy imaging trains\u003c\/li\u003e\n\u003cli\u003eWiFi and USB-C for complete remote control\u003c\/li\u003e\n\u003cli\u003eDedicated ARCO port for rotator integration\u003c\/li\u003e\n\u003cli\u003eIncludes PrimaLuceLab PLAY astrophotography software\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\u003ePrimaLuceLab ESATTO 3.5\" LP Robotic Focuser\u003c\/h2\u003e\n\u003cp\u003eThe PrimaLuceLab ESATTO 3.5\" LP Robotic Focuser is a low-profile solution for demanding astrographs, compatible with accessories like an M98 to M68 adapter or a 3\" visual back, that integrates with the ARCO rotator and EAGLE computer for full remote control. Designed specifically for optical systems with minimal backfocus, it delivers high-precision, robotic focusing without compromising your imaging 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\u003eThe ESATTO 3.5\" LP: A Low-Profile Focuser for Astrographs\u003c\/h3\u003e\n\u003cp\u003eMany astrographs and high-speed imaging systems have very little backfocus to spare, making it difficult to install a traditional motorized focuser. The ESATTO 3.5\" LP solves this by providing a robust, large-aperture focusing mechanism in an exceptionally thin body, allowing you to achieve critical focus with heavy camera payloads without vignetting or mechanical flexure.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Payload Capacity:\u003c\/strong\u003e Engineered to carry heavy imaging trains, including large cameras, filter wheels, and rotators, without slipping or losing focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-Profile Body:\u003c\/strong\u003e Its slim design preserves precious backfocus, making it possible to add a motorized focuser to optical tubes that previously could not accommodate one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge Free Aperture:\u003c\/strong\u003e The design ensures that the light cone from your telescope passes through unobstructed, preventing vignetting even with large-format sensors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eM98 \u0026amp; 3\" Adapters for Secure System Integration\u003c\/h3\u003e\n\u003cp\u003eThe ESATTO 3.5\" LP features a large M98x1 female thread on the camera side, providing a secure, non-flexing connection point for your equipment. PrimaLuceLab offers a comprehensive system of optional adapters to connect virtually any camera or accessory, including a 3\" visual back for eyepieces or accessories with a 3\" nosepiece.\u003c\/p\u003e\n\u003cp\u003eA key feature of the adapter system is the stop ring, which allows you to rotate your camera to the perfect orientation for framing your target and then lock it down without losing coaxial alignment. This is critical for maintaining flat fields and achieving precise compositions.\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\u003eRemote Control with PLAY, ASCOM, WiFi, and USB-C\u003c\/h3\u003e\n\u003cp\u003eThis focuser is a fully robotic component, designed for complete remote operation. It includes a modern USB-C port for a reliable connection to an EAGLE control unit or any Windows computer, and also features built-in WiFi for wireless control from a smartphone or tablet via the ESATTO Virtual HandPad app.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eARCO Port:\u003c\/strong\u003e A dedicated port allows direct connection to the PrimaLuceLab ARCO rotator, creating an integrated rotating focuser that shares power and communication through a single cable, minimizing clutter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePLAY Software Included:\u003c\/strong\u003e The ESATTO 3.5\" LP comes with PLAY, PrimaLuceLab's own astrophotography software, for a seamless user experience.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASCOM Compliant:\u003c\/strong\u003e A standard ASCOM driver ensures compatibility with third-party astrophotography software like N.I.N.A., SGP, and Maxim DL, allowing you to integrate it into your existing workflow.\u003c\/li\u003e\n\u003c\/ul\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 makes the ESATTO 3.5\" LP ideal for an astrograph telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAstrographs often have very limited backfocus. The \u003cstrong\u003eESATTO 3.5\" LP's\u003c\/strong\u003e primary advantage is its extremely low-profile design, which allows it to fit into optical trains where a thicker focuser would not. It also offers a high payload capacity and a large clear aperture, preventing flexure and vignetting with heavy, large-sensor camera setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow can I control the ESATTO 3.5\" LP focuser remotely?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou have multiple options for controlling the \u003cstrong\u003eESATTO 3.5\" LP\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB-C:\u003c\/strong\u003e Connect it to an EAGLE computer or any Windows PC for control via ASCOM drivers or the included PLAY software.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiFi:\u003c\/strong\u003e Use the built-in WiFi to connect to your smartphone or tablet and control focusing with the ESATTO Virtual HandPad app.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEAGLE Integration:\u003c\/strong\u003e When connected to an EAGLE, it becomes part of a fully integrated, remotely managed observatory system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the ESATTO 3.5\" LP work with my Celestron EdgeHD 1100?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. PrimaLuceLab makes an optional adapter specifically for telescopes with the large 3.3\" SC thread, such as the Celestron SCT (11\" and 14\") and EdgeHD (9.25\", 1100, and 1400) models. This adapter allows you to securely mount the \u003cstrong\u003eESATTO 3.5\" LP\u003c\/strong\u003e directly to your telescope's rear cell.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of connecting the ARCO rotator to the ESATTO 3.5\" LP?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eESATTO 3.5\" LP\u003c\/strong\u003e features a dedicated ARCO port. This allows you to connect an ARCO rotator directly to the focuser with a single cable that provides both power and data. This creates a single, compact unit that acts as a rotating focuser, allowing you to frame your target perfectly without additional power or USB cables running to the rotator.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat software is included with the ESATTO 3.5\" LP focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eESATTO 3.5\" LP\u003c\/strong\u003e includes a license for PLAY, PrimaLuceLab's dedicated astrophotography software. It also comes with an ASCOM driver, ensuring it is compatible with most third-party astronomy software packages like N.I.N.A., Sequence Generator Pro (SGP), and others.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach my camera to the ESATTO 3.5\" LP?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe focuser has a standard M98x1 female thread on the camera side. You will need an optional adapter to match your specific camera or accessory. PrimaLuceLab offers a wide range of adapters, such as M98 to M68, M98 to M57, and M98 to M48, many of which include a stop ring to lock the camera's rotation.\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\u003eOptional Accessories\u003c\/td\u003e\n\u003ctd\u003eAdapter from M98 to M68 with stop ring for ESATTO 3,5” LP; 3\" visual back for ESATTO 3,5” LP\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":49131403673885,"sku":"PLL-PLLEST35LP","price":1673.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PrimaLuceLab-ESATTO-3-5-LP-Robotic-Focuser.jpg?v=1725732778"},{"product_id":"primalucelab-sestosenso3","title":"PrimaLuceLab SESTO SENSO 3 Robotic Focusing Motor","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdvanced robotic focusing motor for Crayford or rack-and-pinion focusers\u003c\/li\u003e\n\u003cli\u003eIntegrated position encoder allows manual adjustment without losing calibration\u003c\/li\u003e\n\u003cli\u003eSelf Centering Clamp 2 (SCC2) for direct, bracket-free installation\u003c\/li\u003e\n\u003cli\u003eDual connectivity with USB-C and built-in WiFi\u003c\/li\u003e\n\u003cli\u003eVirtual HandPad for wireless control from any smartphone or tablet\u003c\/li\u003e\n\u003cli\u003eFull integration with PLAY software, ASCOM drivers, and ARCO rotators\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\u003eSESTO SENSO 3 Robotic Focusing Motor\u003c\/h2\u003e\n      \u003cp\u003eThe PrimaLuceLab SESTO SENSO 3 is our most advanced robotic focusing motor, engineered to deliver exceptional precision for external focusers. It introduces an integrated position encoder that permits manual focuser adjustments without losing calibration, a Self Centering Clamp 2 (SCC2) for rapid installation without external brackets, and both USB-C and WiFi connectivity for complete control. You can operate the SESTO SENSO 3 from a computer via its ASCOM driver or PLAY software, or wirelessly from a smartphone using the Virtual HandPad.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eIntegrated Encoder: Manual Focusing Without Losing Calibration\u003c\/h3\u003e\n      \u003cp\u003eThe standout feature of the SESTO SENSO 3 is its integrated position encoder. This system precisely tracks the focuser shaft's movement, allowing you to make manual adjustments with the original focuser knob at any time without the motor losing its calibrated position. This is ideal for observers who switch between visual use and astrophotography.\u003c\/p\u003e\n      \u003cp\u003eFor added security, the Automatic Position Recovery function can be enabled. If the focuser is accidentally moved, this feature automatically returns it to the previous position after a user-defined delay, protecting your focus during public outreach events or unattended remote sessions.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eFlexible Control: USB-C, WiFi, and Virtual HandPad\u003c\/h3\u003e\n      \u003cp\u003eThe SESTO SENSO 3 offers modern, reliable connectivity options for any workflow. A reversible USB-C port ensures a secure connection to any Windows computer or PrimaLuceLab EAGLE, minimizing the risk of accidental disconnection in the dark.\u003c\/p\u003e\n      \u003cp\u003eFor ultimate freedom, the built-in WiFi creates its own network, allowing you to connect directly with a smartphone or tablet. The browser-based Virtual HandPad gives you full control over focuser movement and presets, effectively turning your mobile device into a smart hand controller—no computer or cables required at the telescope.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n    \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eSeamless Integration: SCC2 Clamp, ARCO Port, and PLAY Software\u003c\/h3\u003e\n      \u003cp\u003eInstallation is simplified with the new Self Centering Clamp 2 (SCC2), which attaches the SESTO SENSO 3 directly to a wide range of focusers without needing external brackets. The compact, all-in-one chassis houses all electronics and features dimmable LEDs that can be fully extinguished using DARK mode to eliminate stray light.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eARCO Ready:\u003c\/strong\u003e A dedicated port provides single-cable power and data for the optional ARCO robotic rotator, enabling a clean, fully integrated imaging train.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eBroad Software Support:\u003c\/strong\u003e The included ASCOM driver ensures compatibility with popular third-party software like NINA, Sequence Generator Pro, and MaxIm DL.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003ePLAY Software:\u003c\/strong\u003e Unlock advanced features like automated focusing routines and temperature compensation (with optional probe) using PrimaLuceLab's dedicated PLAY astrophotography suite.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eSESTO SENSO 3 vs. Predecessors: What's New?\u003c\/h3\u003e\n      \u003cp\u003eThe SESTO SENSO 3 represents a significant evolution in robotic focusing, moving beyond the capabilities of previous models. While older focus motors would lose their position if touched manually, the SESTO SENSO 3's integrated encoder solves this problem completely.\u003c\/p\u003e\n      \u003cp\u003eKey upgrades include the move to a bracketless mounting system with the SCC2 clamp and the introduction of modern USB-C and WiFi control. These features create a more robust, flexible, and user-friendly system for both remote imagers and hands-on visual observers.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of the SESTO SENSO 3's integrated encoder?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe integrated encoder allows you to \u003cstrong\u003emanually turn the focuser knob\u003c\/strong\u003e at any time without the SESTO SENSO 3 losing its electronic position. This is a major advantage for users who switch between visual observing and imaging, as you can make coarse adjustments by hand and then switch to fine electronic control without needing to recalibrate.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I control the SESTO SENSO 3 without a computer at the telescope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes. The SESTO SENSO 3 has \u003cstrong\u003ebuilt-in WiFi\u003c\/strong\u003e that creates its own wireless network. You can connect to it with any smartphone or tablet and use the web-based \u003cstrong\u003eVirtual HandPad\u003c\/strong\u003e to move the focuser, save positions, and make precise adjustments without needing a connected PC.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the SESTO SENSO 3 attach to my Crayford focuser?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe SESTO SENSO 3 uses the included \u003cstrong\u003eSelf Centering Clamp 2 (SCC2)\u003c\/strong\u003e system. This allows it to connect directly to the focuser shaft of many popular Crayford and rack-and-pinion focusers without requiring any external, custom-made brackets, which simplifies installation significantly.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eI use NINA for imaging. Is the SESTO SENSO 3 compatible?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eAbsolutely. The SESTO SENSO 3 includes a dedicated \u003cstrong\u003eASCOM driver\u003c\/strong\u003e. This ensures full compatibility with a wide range of third-party astrophotography software, including NINA, Sequence Generator Pro (SGP), MaxIm DL, and others that support the ASCOM standard.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eMy observatory has public viewing nights. How does the SESTO SENSO 3 handle accidental bumps to the focuser knob?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThis is a perfect use case for the \u003cstrong\u003eAutomatic Position Recovery\u003c\/strong\u003e feature. When enabled, if the SESTO SENSO 3 detects that the focuser has been moved manually (either intentionally or accidentally), it will automatically move the focuser back to its last commanded position, ensuring your target remains perfectly focused for the next person.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eI want to build a fully remote imaging rig with a rotator. How does the SESTO SENSO 3 fit into this system?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe SESTO SENSO 3 is designed for this scenario. It features a dedicated \u003cstrong\u003eARCO port\u003c\/strong\u003e that allows you to connect a PrimaLuceLab ARCO rotator with a single cable for both power and data. This creates a clean, compact, and fully integrated system for focusing and framing that can be controlled remotely through the EAGLE or another computer running PLAY or ASCOM-compatible software.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\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\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\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_SESTO_SENSO_3_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\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":52913366073629,"sku":"PLL-SESTOSENSO3","price":391.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PrimaLuceLab-SESTO-SENSO-3-robotic-focusing-motor-for-external-focusers-1_0a500a85-7874-4e56-910f-bb1d87665829.jpg?v=1789089939"},{"product_id":"primalucelab-sestosenso3sc","title":"PrimaLuceLab SESTO SENSO 3 SC Robotic Focusing Motor","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eRobotic focusing motor for SC, EdgeHD, and RASA telescopes\u003c\/li\u003e\n\u003cli\u003eDirect Pulley Clamp (DPC) for backlash-free, slip-free connection\u003c\/li\u003e\n\u003cli\u003eIntegrated encoder allows for manual focusing without losing position\u003c\/li\u003e\n\u003cli\u003eUSB-C port and built-in WiFi for dual control options\u003c\/li\u003e\n\u003cli\u003eASCOM and PLAY software compatible for full remote automation\u003c\/li\u003e\n\u003cli\u003eAutomatic calibration routine designed for internal mirror focusers\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\u003eSESTO SENSO 3 SC Robotic Focusing Motor\u003c\/h2\u003e\n\u003cp\u003eThe SESTO SENSO 3 SC is an advanced robotic focusing motor engineered specifically for Schmidt-Cassegrain, EdgeHD, and RASA telescopes with internal mirror focusers. Its innovative Direct Pulley Clamp (DPC) system provides a backlash-free connection to the focus knob, while an integrated position encoder maintains perfect positional awareness even after manual adjustments. With both USB-C and built-in WiFi, you gain flexible, reliable remote focus control from a computer, smartphone, or tablet.\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\u003eDirect Pulley Clamp (DPC): Backlash-Free Coupling with Manual Override\u003c\/h3\u003e\n\u003cp\u003eThe core of the SESTO SENSO 3 SC is its Direct Pulley Clamp (DPC) mechanism. This system provides a secure, slip-free connection to your telescope's focuser knob, eliminating the backlash common in other motor designs. This ensures that every command from the software translates into precise, repeatable mirror movement.\u003c\/p\u003e\n\u003cp\u003eCrucially, the DPC works in concert with an integrated position encoder. This allows you to manually turn the focus knob at any time—for quick visual adjustments or switching eyepieces—without the system losing its calibrated position. The SESTO SENSO 3 SC always knows where it is, giving you the freedom of manual control with the repeatability of robotic automation.\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\u003eDual Control: USB-C and WiFi with Virtual HandPad\u003c\/h3\u003e\n\u003cp\u003eThe SESTO SENSO 3 SC offers two robust methods for control. A modern USB-C port provides a secure, reliable cabled connection to any Windows computer or PrimaLuceLab EAGLE unit, preventing accidental disconnections during an imaging run. This is the ideal connection for a permanent observatory or a complex portable setup.\u003c\/p\u003e\n\u003cp\u003eFor wireless freedom, the focuser has built-in WiFi, creating its own network. You can connect directly with a smartphone or tablet and use the web-based Virtual HandPad to make focus adjustments right at the telescope. This is perfect for initial setup, visual observing, or when you don't want to be tethered to a laptop.\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\u003eSC-Specific Automation: Remote Calibration and Position Recovery\u003c\/h3\u003e\n\u003cp\u003eUnlike external focusers, internal mirror focus systems lack hard mechanical stops, making remote calibration a major challenge. The SESTO SENSO 3 SC solves this with an exclusive Automatic Calibration mode that intelligently detects the focuser's full travel range without manual intervention. This makes it a uniquely reliable solution for unattended, remote observatories.\u003c\/p\u003e\n\u003cp\u003eFor added security, an Automatic Position Recovery function can be enabled. If the focus knob is accidentally moved, the system will automatically return to its last known position after a user-defined delay. This feature is invaluable in public observatories or educational settings where multiple users might handle the equipment.\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\u003eSeamless Ecosystem Integration: ARCO, EAGLE, and ASCOM Control\u003c\/h3\u003e\n\u003cp\u003eThe SESTO SENSO 3 SC is designed to be the hub of your imaging train. A dedicated ARCO port allows you to connect a PrimaLuceLab ARCO rotator with a single cable for both power and data, dramatically simplifying cable management. When paired with an EAGLE computer, you can enable GHOST mode for wireless control from your PC and DARK mode to automatically extinguish all status LEDs during an exposure.\u003c\/p\u003e\n\u003cp\u003eBeyond the PrimaLuceLab ecosystem, the focuser is fully ASCOM compliant. This ensures out-of-the-box compatibility with all major astrophotography software, including NINA, Sequence Generator Pro, and MaxIm DL, allowing you to integrate it into your existing workflow without compromise.\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\u003eSESTO SENSO 3 SC vs. Standard Models: Why Automatic Calibration Matters\u003c\/h3\u003e\n\u003cp\u003eWhile other SESTO SENSO 3 models provide exceptional focusing, the SC version contains a key feature that makes it essential for telescopes with internal focusers. The Automatic Calibration routine is what sets it apart, as it is purpose-built to handle the unique mechanics of a moving-mirror system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Focusers:\u003c\/strong\u003e Have a defined, limited travel range with hard stops, making them easy to calibrate manually.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSC\/EdgeHD\/RASA Focusers:\u003c\/strong\u003e The primary mirror can be moved over a very long range with no fixed endpoints. Manually finding these limits is impractical, and impossible to do remotely. The SESTO SENSO 3 SC automates this discovery process, a feature not available on other models.\u003c\/li\u003e\n\u003c\/ul\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 makes the SESTO SENSO 3 SC different from other robotic focusers for SCTs?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SESTO SENSO 3 SC's key differentiators are its \u003cstrong\u003eDirect Pulley Clamp (DPC)\u003c\/strong\u003e for a backlash-free connection and its \u003cstrong\u003eintegrated encoder\u003c\/strong\u003e. This combination allows you to make manual focus adjustments at any time without the system losing its position, a feature missing from many competing focus motors. Furthermore, its exclusive automatic calibration routine is designed specifically for the challenges of internal mirror focusing systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I still manually focus my Celestron EdgeHD 8 with the SESTO SENSO 3 SC installed?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The DPC system is designed to allow full manual control. You can turn the focuser knob by hand whenever you need to, and the integrated encoder will track the movement. The system will instantly know the new focus position without needing to be re-calibrated, making it seamless to switch between imaging and visual use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the SESTO SENSO 3 SC handle remote operation in an observatory?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt is built for remote use. The \u003cstrong\u003eAutomatic Calibration\u003c\/strong\u003e feature allows the focuser to learn the travel limits of your telescope's mirror without you needing to be there. Control can be handled reliably over a wired USB-C connection to an observatory computer, and the ASCOM driver allows it to be integrated into any remote automation software.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat software is compatible with the SESTO SENSO 3 SC?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SESTO SENSO 3 SC works with PrimaLuceLab's own \u003cstrong\u003ePLAY\u003c\/strong\u003e software for an integrated experience, especially when using an EAGLE computer. It is also fully \u003cstrong\u003eASCOM compliant\u003c\/strong\u003e, meaning it works with virtually all popular third-party astrophotography applications, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNINA\u003c\/li\u003e\n\u003cli\u003eSequence Generator Pro (SGP)\u003c\/li\u003e\n\u003cli\u003eMaxIm DL\u003c\/li\u003e\n\u003cli\u003eand others that support the ASCOM focusing standard.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need an EAGLE computer to use the SESTO SENSO 3 SC?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. An EAGLE is not required. You can connect the SESTO SENSO 3 SC directly to any Windows 10\/11 computer via its USB-C port. You can also control it completely wirelessly using its built-in WiFi and the Virtual HandPad on any smartphone or tablet. However, an EAGLE computer unlocks advanced features like GHOST mode (wireless control from the EAGLE) and automatic DARK mode activation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the SESTO SENSO 3 SC integrate with the ARCO rotator on my RASA 11?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIntegration is incredibly simple. The SESTO SENSO 3 SC has a dedicated ARCO port. You connect the ARCO rotator to this port using a single, short cable that provides both power and data. This eliminates extra cables running to your computer, streamlining your imaging train and reducing the potential for cable snags.\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\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_SESTO_SENSO_3_SC_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":52913366139165,"sku":"PLL-SESTOSENSO3SC","price":419.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PrimaLuceLab-SESTO-SENSO-3-SC-robotic-focusing-motor-for-SC-type-telescopes-1_0648aa3e-242f-47d8-a6ca-4a7134488fcf.jpg?v=1789089948"},{"product_id":"primalucelab-sestosenso3ls","title":"PrimaLuceLab SESTO SENSO 3 LS Robotic Focusing Motor for Telephoto Lenses","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eRobotic focusing motor designed for telephoto lenses\u003c\/li\u003e\n\u003cli\u003eLens Gear Clamp (LGC) for direct, backlash-free connection\u003c\/li\u003e\n\u003cli\u003eIntegrated position encoder allows manual override without losing focus position\u003c\/li\u003e\n\u003cli\u003eUSB-C and built-in WiFi for wired or wireless control\u003c\/li\u003e\n\u003cli\u003eArca-Swiss style mount for secure attachment to PLUS system dovetails\u003c\/li\u003e\n\u003cli\u003eFull integration with PrimaLuceLab PLAY software and ARCO rotator\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\u003eSESTO SENSO 3 LS Robotic Focusing Motor for Telephoto Lenses\u003c\/h2\u003e\n\u003cp\u003eThe SESTO SENSO 3 LS is a dedicated robotic focusing motor engineered to bring high-precision, automated focusing to astrophotography with telephoto lenses from Canon, Nikon, and others. It integrates its motor, high-resolution encoder, and control electronics into a single, compact unit that connects directly to your lens's focus ring via the innovative Lens Gear Clamp (LGC) system, providing backlash-free adjustments. With both USB-C and built-in WiFi connectivity, you can control focus from a computer or wirelessly from a smartphone, fully integrating your camera lens into a modern astrophotography workflow.\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\u003eLGC System: Precision, Backlash-Free Focusing for Telephoto Lenses\u003c\/h3\u003e\n\u003cp\u003eUnlike universal motors that rely on external belts, the SESTO SENSO 3 LS uses the new Lens Gear Clamp (LGC) system. This custom mechanical interface engages the lens's manual focus ring with a direct-drive rubber gear, eliminating the slip and backlash common with belt-driven systems. This ensures that every command from the control software translates into precise, repeatable focus adjustments critical for sharp stars.\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 Encoder: Manual Override with Automatic Position Recovery\u003c\/h3\u003e\n\u003cp\u003eA key innovation in the SESTO SENSO 3 LS is its integrated position encoder. This allows you to manually turn the lens's focus ring at any time—even while the motor is powered on—without losing the system's focus position. The focuser instantly knows its new position, enabling seamless transitions between manual tweaks and automated control. The system also features an Automatic Position Recovery function, which can be configured to return the lens to its last commanded position if it's accidentally moved, safeguarding your focus during an imaging session.\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\u003eWireless \u0026amp; Wired Control: USB-C, WiFi, and PLAY Software Integration\u003c\/h3\u003e\n\u003cp\u003eThe SESTO SENSO 3 LS offers flexible control options to suit any imaging setup. Connect it to an EAGLE control unit or any Windows computer via the modern USB-C port for robust, hardwired control. For a cable-free setup, use the built-in WiFi to connect to the Virtual HandPad on a smartphone or tablet. The motor is fully compatible with PrimaLuceLab's PLAY astrophotography suite, supports ASCOM drivers for third-party software, and features a dedicated ARCO port for single-cable power and control of the ARCO robotic rotator.\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\u003eRig Integration: Compact All-in-One Design with Arca-Swiss Mounting\u003c\/h3\u003e\n\u003cp\u003eDesigned as a self-contained unit, the SESTO SENSO 3 LS houses all its electronics within a single lightweight chassis, minimizing cable clutter. An integrated Arca-Swiss style foot allows for direct and secure mounting to any PLUS Vixen-style dovetail bar. For dark sky imaging, the status LEDs are dimmable and can be turned off completely to prevent any stray light from affecting your 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\u003eSESTO SENSO 3 LS vs. SESTO SENSO 3: Choosing the Right Focuser\u003c\/h3\u003e\n\u003cp\u003eWhile both motors share core technology, their applications are distinct. The standard SESTO SENSO 3 is designed for telescopes, using bushings and couplings to attach to the pinion shafts of traditional Crayford or SCT focusers. The SESTO SENSO 3 LS is engineered exclusively for photographic telephoto lenses, using its unique LGC system to interface directly with the lens's focusing ring. If you are imaging with a telescope, choose the SESTO SENSO 3; for a telephoto lens, the SESTO SENSO 3 LS is the correct tool for the job.\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 makes the SESTO SENSO 3 LS different from the standard SESTO SENSO 3?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary difference is the mechanical interface. The \u003cstrong\u003eSESTO SENSO 3 LS\u003c\/strong\u003e is designed specifically for photographic telephoto lenses and uses the \u003cstrong\u003eLens Gear Clamp (LGC)\u003c\/strong\u003e to directly drive the lens's focus ring. The standard SESTO SENSO 3 is for telescopes and connects to the focuser's pinion shaft using various-sized bushings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I still focus my lens manually with the SESTO SENSO 3 LS attached?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Thanks to the integrated high-resolution encoder, you can turn your lens's focus ring by hand at any time. The SESTO SENSO 3 LS will track the movement and update its position in the software, allowing you to switch between manual and automated focusing without needing to recalibrate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the \"Automatic Position Recovery\" feature on the SESTO SENSO 3 LS?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis feature uses the encoder to protect your focus. If the lens focus ring is moved manually or accidentally bumped, the motor can automatically return it to the last commanded position. You can set a delay for this recovery, from an instant reaction to a longer pause, giving you full control over the behavior.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Lens Gear Clamp (LGC) on the SESTO SENSO 3 LS work?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe LGC is a gear-based system that clamps around the barrel of your telephoto lens. An integrated rubber gear makes direct, firm contact with the manual focus ring. This eliminates the need for external belts and prevents the mechanical slip and backlash that can ruin focus precision.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would I integrate the SESTO SENSO 3 LS into a portable setup with a Canon 400mm lens and an EAGLE computer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIntegration is straightforward. You would mount your Canon lens and camera to a PLUS Vixen-style dovetail bar. The SESTO SENSO 3 LS attaches to the same bar via its Arca-Swiss foot and is positioned so the LGC engages the lens's focus ring. You would then connect the SESTO SENSO 3 LS to your EAGLE using a single USB-C cable for power and data, allowing for full control through the PLAY software.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the SESTO SENSO 3 LS compensate for temperature changes when imaging the Andromeda Galaxy (M31) with my lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is equipped for this. The SESTO SENSO 3 LS includes a dedicated port for an optional temperature probe. When connected, and used with third-party software that supports it (like SGP or N.I.N.A.), you can configure automatic focusing routines that trigger when the ambient temperature changes by a set amount, ensuring M31's details remain perfectly sharp throughout the night.\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\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_SESTO_SENSO_3_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":52913366958365,"sku":"PLL-SESTOSENSO3LS","price":489.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PrimaLuceLab-SESTO-SENSO-3-LS-robotic-focusing-motor-for-telephoto-lenses-1_0603f9d5-0cde-425a-8180-9edc83694dca.jpg?v=1789089956"},{"product_id":"primalucelab-pllest2arco2","title":"PrimaLuceLab ESATTO 2\" Focuser with ARCO 2\" Rotator","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCombines robotic focuser and high-precision rotator in one unit\u003c\/li\u003e\n\u003cli\u003eLow-profile design for minimal back focus consumption\u003c\/li\u003e\n\u003cli\u003eSingle-cable connection between units for simplified wiring\u003c\/li\u003e\n\u003cli\u003eASCOM and native PLAY software compatible for flexible control\u003c\/li\u003e\n\u003cli\u003eFunctions as a camera rotator for framing and a field de-rotator for alt-az mounts\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 2\" Focuser with ARCO 2\" Rotator\u003c\/h2\u003e\n\u003cp\u003eThis bundle combines the PrimaLuceLab ESATTO 2\" robotic focuser and the ARCO 2\" rotator into a single, compact unit for complete remote control of your imaging train. Engineered to work together seamlessly, this system provides both high-precision focusing and arc-second resolution rotation without the cable management complexity of separate components. The integrated design simplifies your setup, requiring only a single USB cable to the ESATTO for control and power, making it a streamlined solution for automated astrophotography.\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 Focus and Rotation: The ESATTO and ARCO System\u003c\/h3\u003e\n\u003cp\u003eBy including the necessary adapter, this bundle creates a rigid, low-profile focusing and rotation assembly. This integration is designed to minimize the back focus used in your optical train while providing the robust support needed for modern imaging cameras. The two devices communicate through a short link cable, meaning you only need to connect the ESATTO focuser to your EAGLE or Windows computer to command both focus and rotation, dramatically simplifying cable routing at the 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\u003eRobotic Focusing Control with the ESATTO 2\"\u003c\/h3\u003e\n\u003cp\u003eThe ESATTO 2\" is a new-generation robotic focuser with an integrated motor and advanced electronics, eliminating the need for an external controller. It offers exceptional load capacity and precise draw tube travel, ensuring no slippage even with heavy camera and filter wheel combinations. You can control the ESATTO directly via USB or wirelessly using the Virtual HandPad on a smartphone or tablet, giving you flexible and reliable remote focusing for any setup.\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\u003eArc-Second Precision with the ARCO 2\" Camera Rotator\u003c\/h3\u003e\n\u003cp\u003eThe ARCO 2\" rotator delivers incredible rotational accuracy, with a resolution of one arc-second per step. This level of precision makes it a superior tool for both perfectly framing your deep-sky targets and for acting as a field de-rotator when used with an alt-azimuth mount. Its slim profile adds minimal thickness to the imaging train, preserving precious back focus for other accessories like off-axis guiders or filter wheels.\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 Telescope Control with ASCOM and PLAY Software\u003c\/h3\u003e\n\u003cp\u003eFlexibility in control is central to the ESATTO and ARCO system. Both devices include ASCOM drivers, ensuring full compatibility with third-party astrophotography software for Windows, such as N.I.N.A., Sequence Generator Pro, or Maxim DL. For an even more integrated experience, you can use PrimaLuceLab's PLAY software, which is designed to control all their devices, along with your camera and mount, from a single, intuitive interface.\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 advantage of the ESATTO 2\" and ARCO 2\" bundle over separate components?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is \u003cstrong\u003eseamless integration and simplified cabling\u003c\/strong\u003e. The ESATTO and ARCO are designed to work as a single unit, requiring only one USB and power connection to the ESATTO focuser, which then controls and powers the ARCO rotator. This reduces cable clutter and potential snag points at the telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I control the ESATTO 2\" and ARCO 2\" with software like N.I.N.A. or Sequence Generator Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. PrimaLuceLab provides \u003cstrong\u003eASCOM drivers\u003c\/strong\u003e for both the ESATTO focuser and ARCO rotator. This allows you to control them using any Windows-based astrophotography software that supports the ASCOM standard for focusers and rotators.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ARCO 2\" rotator work as a field de-rotator with the ESATTO 2\" focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhen used with a telescope on an \u003cstrong\u003ealt-azimuth mount\u003c\/strong\u003e, the sky appears to rotate in the eyepiece over time. The ARCO 2\" can be commanded by software to precisely counter-rotate the camera at the sidereal rate, effectively freezing the field of view. This allows for long-exposure astrophotography without star trailing, a task typically reserved for equatorial mounts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the PLAY software and how does it control the ESATTO and ARCO system?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003ePLAY is PrimaLuceLab's proprietary astrophotography software\u003c\/strong\u003e designed to create a unified ecosystem for all their hardware. It allows you to control the ESATTO focuser, ARCO rotator, cameras, and mounts from a single application, simplifying the process of setting up and executing an imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I use the ESATTO and ARCO bundle with my Celestron SCT for EAA, how does the de-rotation feature help?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eMany Celestron SCTs are on alt-azimuth mounts, which are convenient for visual use but introduce field rotation during exposures. For Electronically Assisted Astronomy (EAA), where you stack many short exposures, this rotation will blur the edges of the image. The ARCO's de-rotation function corrects for this, allowing you to create sharper, longer-duration stacked images of objects like the Hercules Cluster (M13).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI want to image the Rosette Nebula (NGC 2244) and get the perfect framing. How does the ARCO rotator in this bundle help?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Rosette Nebula is a large object that often requires precise composition to fit well within the camera's field of view. The ARCO rotator allows you to make fine, remote adjustments to the camera's orientation without physically touching the telescope. You can dial in the exact angle needed to perfectly frame the nebula and its associated star cluster, ensuring a professional-looking final image.\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\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":52913367777565,"sku":"PLLEST2ARCO2","price":1987.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PrimaLuceLab-ESATTO-2-focuser-with-ARCO-2-rotator-1_c178e268-9b07-488b-ab4c-43a4efddd90c.jpg?v=1789089964"},{"product_id":"primalucelab-pllest2lp","title":"PrimaLuceLab ESATTO 2\" LP Low Profile Robotic Focuser","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e32mm low-profile thickness\u003c\/li\u003e\n\u003cli\u003e50.9mm clear aperture\u003c\/li\u003e\n\u003cli\u003e10mm of precise focuser travel\u003c\/li\u003e\n\u003cli\u003e0.03 microns per step resolution\u003c\/li\u003e\n\u003cli\u003e5kg payload capacity\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 2\" LP Low Profile Robotic Focuser\u003c\/h2\u003e\n\u003cp\u003eThe PrimaLuceLab ESATTO 2\" LP robotic focuser delivers automated, high-precision focusing in an ultra-slim 32mm body, making it essential for optical systems with limited back-focus. It supports a 5kg imaging payload through a generous 50.9mm clear aperture, all while weighing only 730g. With 10mm of precise travel and a resolution of 0.03 microns per step, you can achieve critical focus remotely for sharp, high-resolution images.\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\u003eUltra-Slim 32mm Profile for Back-Focus Critical Telescopes\u003c\/h3\u003e\n\u003cp\u003eMany modern telescopes, particularly Schmidt-Cassegrains with reducers like the Celestron EdgeHD 8\", have very little back-focus to accommodate a full imaging train. The ESATTO 2\" LP directly solves this problem with its minimal 32mm optical thickness, allowing you to fit a filter wheel and off-axis guider where a standard focuser would be too long. Despite its slim design, the focuser provides a large 50.9mm clear aperture, ensuring no vignetting even with full-frame sensors.\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\u003e0.03 Micron Resolution with WiFi and USB-C Control\u003c\/h3\u003e\n\u003cp\u003eAchieving perfect focus on a high-resolution sensor requires incredibly fine adjustments. The ESATTO 2\" LP's motor provides a repeatable step resolution of just 0.03 microns, eliminating backlash and ensuring you can dial in the sharpest possible stars. You control the focuser remotely via a modern USB-C port or built-in WiFi, connecting directly to PrimaLuceLab's PLAY astrophotography software or standard ASCOM-compliant applications. The short 10mm travel range is a direct trade-off for the compact design, optimized for fine-tuning rather than coarse adjustment.\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\u003e5kg Payload Capacity and ARCO Rotator Compatibility\u003c\/h3\u003e\n\u003cp\u003eEngineered to prevent tilt and flexure, the ESATTO 2\" LP supports a robust 5kg imaging payload. This is more than enough capacity to handle a cooled astronomy camera, a filter wheel, and an off-axis guider without compromising mechanical stability. For a fully automated imaging rig, the focuser integrates seamlessly with the PrimaLuceLab ARCO robotic rotator, creating a rigid, remotely controlled system for both focusing and field framing.\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 makes the ESATTO 2\" LP essential for a Celestron EdgeHD 8\" telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Celestron EdgeHD 8\", especially with its 0.7x reducer, has a very strict back-focus requirement. The ESATTO 2\" LP's ultra-slim \u003cstrong\u003e32mm profile\u003c\/strong\u003e is one of the few robotic focusers that can fit within this limited distance while still allowing room for other essential accessories like a filter wheel or off-axis guider.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 10mm travel of the ESATTO 2\" LP enough for my setup?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e10mm travel distance\u003c\/strong\u003e is designed for fine focusing after coarse focus has been set with the telescope's primary focuser. It's ideal for automatic temperature compensation and achieving critical sharpness with software, but not for large initial focus adjustments. This is a deliberate design trade-off for its low-profile form factor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the ESATTO 2\" LP handle a heavy imaging train?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The ESATTO 2\" LP has a \u003cstrong\u003epayload capacity of 5kg\u003c\/strong\u003e (11 lbs), which is sufficient for most modern imaging setups. It can reliably support a cooled CMOS or CCD camera, a 2\" filter wheel, and an off-axis guider without introducing flexure or tilt into the optical train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I control the ESATTO 2\" LP focuser remotely?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou can control the ESATTO 2\" LP in multiple ways:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB-C:\u003c\/strong\u003e Connect directly to a PC or EAGLE control unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiFi:\u003c\/strong\u003e Connect wirelessly from your smartphone, tablet, or computer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoftware:\u003c\/strong\u003e It is fully compatible with PrimaLuceLab's \u003cstrong\u003ePLAY\u003c\/strong\u003e software and supports standard \u003cstrong\u003eASCOM drivers\u003c\/strong\u003e for use with third-party software like N.I.N.A. or Sequence Generator Pro.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the ESATTO 2\" LP cause vignetting on my full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe focuser features a large \u003cstrong\u003e50.9mm clear aperture\u003c\/strong\u003e, which is designed to fully illuminate sensors up to full-frame (43mm diagonal) without vignetting. This ensures your flat frames can correct for an evenly illuminated field, provided the rest of your optical train is also full-frame compatible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need special adapters to connect the ESATTO 2\" LP to my telescope and camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The ESATTO 2\" LP requires optional adapters for both the telescope and camera sides to ensure a secure, threaded connection. PrimaLuceLab offers a wide range of adapters for different telescope thread types (like SCT thread) and camera connections (like M48 or M54), which must be purchased separately.\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\u003eProfile Thickness\u003c\/td\u003e\n\u003ctd\u003e32mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e50.9mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Travel\u003c\/td\u003e\n\u003ctd\u003e10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStep Resolution\u003c\/td\u003e\n\u003ctd\u003e0.03 microns per step\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePayload Capacity\u003c\/td\u003e\n\u003ctd\u003e5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e730g\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":52913369514269,"sku":"PLLEST2LP","price":1225.0,"currency_code":"CAD","in_stock":true}]},{"product_id":"primalucelab-pllest2lparco2","title":"PrimaLuceLab ESATTO 2\" LP Focuser with ARCO 2\" Rotator","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCombines ESATTO 2\" LP robotic focuser and ARCO 2\" robotic rotator\u003c\/li\u003e\n\u003cli\u003eLow-profile design for compact imaging trains\u003c\/li\u003e\n\u003cli\u003eUnified power and data connection through the ESATTO focuser\u003c\/li\u003e\n\u003cli\u003eASCOM drivers for compatibility with third-party Windows software\u003c\/li\u003e\n\u003cli\u003eNative control via PrimaLuceLab's PLAY astrophotography software\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 2\" LP Focuser with ARCO 2\" Rotator\u003c\/h2\u003e\n\u003cp\u003eThis bundle integrates the PrimaLuceLab ESATTO 2\" LP focuser and the ARCO 2\" rotator into a single, compact unit for complete remote control over your imaging train. Engineered to work together seamlessly, this system provides precise, robotic focusing and field rotation while dramatically simplifying cable management. It replaces two separate devices and their corresponding cables with one low-profile assembly, reducing potential snags and setup complexity for automated astrophotography.\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 Focus and Rotation: The ESATTO 2\" LP and ARCO 2\" System\u003c\/h3\u003e\n\u003cp\u003eBy combining the ESATTO 2\" LP focuser with the ARCO 2\" rotator, this package delivers two critical imaging functions in a tightly integrated form factor. The ESATTO provides the precise, repeatable focus adjustments necessary for sharp stars, while the ARCO allows you to frame your target perfectly or act as a field de-rotator for alt-azimuth mounts. Because they are designed as a system, you gain these capabilities without the bulk and connection headaches of separate components.\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\u003eSimplified Cabling for Snag-Free Remote Imaging\u003c\/h3\u003e\n\u003cp\u003eOne of the most significant challenges in a remote imaging setup is cable drag and the risk of snags during a long exposure sequence. This bundle solves that problem with a unified connection design. A single USB cable runs from your control computer to the ESATTO focuser, which then powers and controls the ARCO rotator via a short, included link cable. This eliminates the need for separate power and data lines for the rotator, creating a cleaner, more reliable setup.\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\u003eSeamless Control with PLAY and ASCOM Drivers\u003c\/h3\u003e\n\u003cp\u003eYou have complete flexibility in how you control the ESATTO and ARCO system. Standard ASCOM drivers ensure full compatibility with a wide range of popular Windows-based astrophotography software. For users invested in the PrimaLuceLab ecosystem, the native PLAY software offers a streamlined, all-in-one control interface. PLAY allows you to manage the focuser, rotator, and other connected devices like the EAGLE computer from a single, intuitive application designed for astrophotography.\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 software can I use to control the ESATTO 2\" LP and ARCO 2\" bundle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou can control the ESATTO 2\" LP and ARCO 2\" using any Windows-based astrophotography software that supports \u003cstrong\u003eASCOM focusers and rotators\u003c\/strong\u003e. For a more integrated experience, you can use PrimaLuceLab's proprietary \u003cstrong\u003ePLAY software\u003c\/strong\u003e, which is designed to control their entire line of products from a single application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do the ESATTO 2\" LP focuser and ARCO 2\" rotator connect to my computer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe system is designed for minimal cable clutter. You only need to connect \u003cstrong\u003eone USB cable\u003c\/strong\u003e from your computer to the ESATTO 2\" LP focuser. The ARCO 2\" rotator then connects directly to the ESATTO with a short link cable, receiving both power and data through the focuser.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need separate power supplies for the ESATTO 2\" LP and ARCO 2\"?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The ARCO rotator is powered directly by the ESATTO focuser. The ESATTO itself can often draw sufficient power from a high-current USB port. A separate 12V power supply for the ESATTO is only required if your computer's USB port cannot provide enough current.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ARCO 2\" rotator for field de-rotation on my Celestron CPC alt-az mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The ARCO 2\" rotator is designed to function as both a camera angle adjuster for equatorial mounts and a \u003cstrong\u003efield de-rotator\u003c\/strong\u003e for alt-azimuth mounts. When properly configured with compatible software, it can counteract the field rotation inherent in alt-az tracking, enabling long-exposure deep-sky imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ESATTO 2\" LP and ARCO 2\" bundle attach to a large Celestron EdgeHD 1100 telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo attach this bundle to larger Celestron SCT and EdgeHD telescopes like the 11-inch or 14-inch models, you will need a specific adapter. PrimaLuceLab offers adapters that connect the focuser to the large 3.3\" threaded port on the rear cell of these telescopes, ensuring a secure, rigid connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of getting the ESATTO 2\" LP and ARCO 2\" as a bundle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is \u003cstrong\u003eintegration\u003c\/strong\u003e. The focuser and rotator are designed to work as a single unit, which results in a more compact physical profile and drastically simplified power and data cabling. This reduces setup time, weight, and the potential for cable snags during an imaging session.\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\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":52913369547037,"sku":"PLLEST2LPARCO2","price":2331.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PrimaLuceLab-ESATTO-2-LP-focuser-with-ARCO-2-rotator-1_e5283a95-0e40-49f5-96be-64cc27b2a942.jpg?v=1789089978"},{"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"},{"product_id":"primalucelab-pllest35lparco3","title":"PrimaLuceLab ESATTO 3,5\" LP Focuser with ARCO 3\" Rotator","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCombined ESATTO 3,5\" Focuser and ARCO 3\" Rotator\u003c\/li\u003e\n\u003cli\u003eLow-Profile Design for Complex Imaging Trains\u003c\/li\u003e\n\u003cli\u003eIntegrated Power and Data Reduces Cable Drag\u003c\/li\u003e\n\u003cli\u003eFunctions as Both Camera and Field Rotator\u003c\/li\u003e\n\u003cli\u003eIncludes Native PLAY and Universal ASCOM Software Support\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 3,5\" LP Focuser with ARCO 3\" Rotator\u003c\/h2\u003e\n\u003cp\u003eThe PrimaLuceLab ESATTO 3,5\" LP focuser and ARCO 3\" rotator bundle provides integrated, remote control over both critical imaging axes in a single, compact unit. This package combines the low-profile ESATTO 3,5\" robotic focuser with the versatile ARCO 3\" rotator, simplifying cable management down to a single USB connection for both devices.\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 Focus and Rotation: A Single-Cable Solution\u003c\/h3\u003e\n\u003cp\u003eThis bundle is engineered for seamless integration. The ESATTO focuser and ARCO rotator connect to each other with a short power and data cable, meaning you only need to run a single USB cable from your control computer to the ESATTO. This design drastically reduces cable drag and potential snags—a critical factor for reliable, automated imaging sessions.\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\u003eThe ESATTO 3,5\" LP: Robotic Low-Profile Focusing\u003c\/h3\u003e\n\u003cp\u003eThe ESATTO 3,5\" LP is a robotic focuser designed for demanding astrophotography where backfocus is limited. Its low-profile body allows you to add precise, repeatable focusing to complex imaging trains that include off-axis guiders, filter wheels, and large-format cameras. The all-digital operation ensures you can achieve and maintain critical focus remotely without touching the 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: Precision Framing and De-Rotation\u003c\/h3\u003e\n\u003cp\u003eThe ARCO 3\" rotator serves two essential roles for the advanced imager. As a camera rotator, it allows you to precisely frame your target without physically loosening your camera. For users with alt-azimuth mounts, it functions as a field de-rotator, actively counteracting the field rotation that occurs during long exposures, enabling you to capture sharp, round stars.\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 with PLAY and ASCOM\u003c\/h3\u003e\n\u003cp\u003eYou can control the ESATTO 3,5\" LP and ARCO 3\" bundle through two powerful software pathways. PrimaLuceLab's PLAY software offers a native, all-in-one environment for controlling all your PLL devices. For universal compatibility, the included ASCOM drivers allow you to integrate the focuser and rotator into any Windows-based astrophotography workflow, including popular software like N.I.N.A. or Sequence Generator Pro.\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 3,5\" LP and ARCO 3\" connect to my computer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe system is designed for minimal cabling. You connect a single USB cable from your computer to the \u003cstrong\u003eESATTO 3,5\" LP focuser\u003c\/strong\u003e. A short, included link cable then connects the ESATTO to the \u003cstrong\u003eARCO 3\" rotator\u003c\/strong\u003e, providing both power and data. This eliminates the need for multiple USB and power cables running to your telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ESATTO 3,5\" LP and ARCO 3\" bundle with software other than PLAY?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Both the ESATTO focuser and ARCO rotator come with \u003cstrong\u003eASCOM drivers\u003c\/strong\u003e. This allows you to control them using any ASCOM-compliant astrophotography software on a Windows computer, ensuring compatibility with most popular automation and capture programs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main benefit of using the ARCO 3\" rotator in this ESATTO bundle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ARCO 3\" rotator provides two key functions. First, it allows for \u003cstrong\u003eprecise framing\u003c\/strong\u003e of celestial objects without having to manually rotate your camera. Second, when used with an alt-azimuth mount, it acts as a \u003cstrong\u003efield de-rotator\u003c\/strong\u003e, correcting for the apparent rotation of the sky during long exposures to keep stars pinpoint.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this ESATTO 3,5\" LP and ARCO 3\" bundle suitable for a remote observatory?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The bundle's robust, all-digital design, remote control capabilities via ASCOM or PLAY, and simplified single-cable connection make it an ideal choice for unattended, remote imaging setups where reliability and precise automation are essential.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI use a Celestron CPC fork mount. How does the ARCO 3\" rotator in this ESATTO bundle help with long exposures?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOn an alt-azimuth mount like the Celestron CPC, stars will appear to rotate around the center of the field during long exposures. The \u003cstrong\u003eARCO 3\" rotator\u003c\/strong\u003e, when used in de-rotator mode with compatible software, will slowly turn your camera to match this rotation. This allows you to take multi-minute exposures without star trails, which would otherwise be impossible without an equatorial wedge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I'm framing the Veil Nebula (NGC 6960) with my SCT, how does the ESATTO and ARCO 3\" bundle make it easier?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Veil Nebula is a large, elongated target. The \u003cstrong\u003eARCO 3\" rotator\u003c\/strong\u003e lets you remotely adjust the camera's orientation in fine increments to perfectly align the nebula's structure with your sensor's long axis. Once framed, the \u003cstrong\u003eESATTO 3,5\" LP focuser\u003c\/strong\u003e allows you to achieve critical focus on the faint filaments without physically touching the telescope, preventing any shifts in your carefully set composition.\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 colspan=\"2\" style=\"text-align:center;\"\u003eNo specifications provided.\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 style=\"text-align:center; width:100%;\"\u003eNo items listed in the box.\u003c\/li\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":52913369710877,"sku":"PLLEST35LPARCO3","price":3619.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PrimaLuceLab-ESATTO-3-5-LP-focuser-with-ARCO-3-rotator-1_5ee62158-95c7-4c99-bd64-bd92a290aaab.jpg?v=1789089993"}],"url":"https:\/\/davidastro.com\/collections\/primalucelab-focusers.oembed","provider":"David Astro","version":"1.0","type":"link"}