• Streamlined, all-in-one housing made for easy installation on Schmidt Cassegrain OTAs with internal focusing.
• Tracks focus position precisely, even during manual adjustments, with Automatic Position Recovery to retain exact motor position.
• Allows direct control from a computer using astronomy software.
• Enables wireless control via smartphone or tablet using the included Virtual HandPad—no computer or physical controller required.
• Supports focus position management and autofocus functionality.
• Fully integrates with third-party astronomy applications.
• Direct connection to the ARCO rotator without extra data or power cables.
• Adjustable LED brightness, with the option to completely disable lights for nighttime use.
• Allows USB cable removal when paired with the EAGLE computer for cleaner setups.
• Automatically adjusts focus to compensate for changes in environmental temperature.
• Designed and manufactured in Italy.
• Weighs only 370 grams (0.8 pounds).

The PrimaLuceLab SESTO SENSO 3 SC represents the latest and most sophisticated generation of robotic focusing motors, specifically engineered for use with Schmidt Cassegrain optical tubes that consists of internal focusers. Building upon and refining the functionality of the 1st and 2nd generation models, it offers significant improvements in precision, reliability, and ease of use.

This third-generation model consolidates all the essential components of a motorized focusing system into one compact, all-in-one unit, eliminating the need for lots of additional accessories or complex setup. Its streamlined design not only enhances the overall user experience but also ensures seamless integration with a wide range of telescopes. By automating the focusing process, the SESTO SENSO 3 SC allows astronomers and astrophotographers to achieve pinpoint focus with remarkable accuracy, even during long exposure imaging or changing environmental conditions.

The SESTO SENSO 3 SC Motorized Focuser is designed with a sleek, compact, and lightweight enclosure that contains all the necessary control electronics, eliminating the need for external modules or cluttered setups. With connection ports conveniently located on both sides, the unit allows for flexible cable management, making it easier to integrate with various telescope configurations.

For added usability during night-time observing or astrophotography, the device includes dimmable status LEDs. These lights can even be completely turned off, helping to reduce stray light that could interfere with imaging or disrupt dark-adapted vision.

The USB-C port enables fast and reliable connectivity to an EAGLE control unit or any standard Windows computer, using the provided USB cable. This ensures smooth communication and control over the focuser.

A dedicated ARCO port, which allows for the simultaneous power and control of the optional ARCO camera rotator via a single cable, streamlining the setup and minimizing cable clutter.

Power is supplied through a 12V DC input (5.5/2.5mm plug, center-positive), which delivers power to both the motor and the internal electronics. The package includes a cigarette lighter-style power cable, but users can also opt for a direct connection to the EAGLE unit with an optional cable for a more integrated power solution.

Lastly, the focuser features a temperature sensor port, enabling the connection of an optional external temperature probe. When used with compatible third-party software, this sensor supports automatic focus adjustments based on ambient temperature fluctuations, helping to maintain optimal focus as environmental conditions change throughout the night.

• Celestron Schmidt-Cassegrain 6” to 14"
• Celestron EdgeHD Aplanatic SC 8” to 14" (except EdgeHD 9.25")
• Celestron RASA 8” to 14"
• SkyWatcher MAK180PRO

The SESTO SENSO 3 SC is equipped with a high-precision position encoder, which continuously monitors the movement of the focuser shaft with exceptional accuracy, thus permitting manual adjustment with the adjustment knob without affecting the focuser's current position even if the SESTO SENSO 3 SC is powered on. For users who like to switch frequently between imaging and visual sessions, this is a major plus!

A secondary benefit is the Automatic Position Recovery which retains the focuser position post manual adjustment. It can be set between 0 and 20 seconds. This is pertinent for larger settings where members may accidentally move the focuser knob. In this case, it will not affect the position. This coupled with the encoders ensures sleek and seamless performance.

The SESTO SENSO 3 SC features a dedicated port specifically designed to connect directly to the ARCO, PrimaLuceLab’s robotic camera rotator and field de-rotator. This integration allows users to unlock advanced capabilities in imaging and framing with minimal complexity.

When paired with ARCO, the ability to remotely adjust your camera’s rotation angle, enabling precise framing of celestial targets without having to physically touch the setup becomes a walk in the park. This is particularly useful in remote or automated observatories, or when dealing with deep-sky imaging that requires perfect alignment.