{"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":299.0,"currency_code":"USD","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","url":"https:\/\/davidastro.com\/fr-us\/products\/primalucelab-sestosenso3sc","provider":"David Astro","version":"1.0","type":"link"}