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PrimaLuceLab ESATTO 4" Focuser with ARCO 3" rotator

PrimaLuceLab ESATTO 4" Focuser with ARCO 3" rotator

by PrimaLuceLab
SKU PLL-PLLEST4ARCO3
CA$4,109.00 - CA$4,109.00
CA$4,109.00
CA$4,109.00 - CA$4,109.00
CA$4,109.00
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  • Robotic focuser and high-resolution rotator bundle
  • Engineered for large, observatory-class telescopes and astrographs
  • High payload capacity to support heavy imaging trains
  • Integrated single-cable power and data connectivity
  • ASCOM and native PLAY software compatibility
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • PrimaLuceLab ESATTO 4" Focuser with ARCO 3" Rotator

    The 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.

    ESATTO 4" Focuser: Robotic Precision for Large Astrographs

    Designed 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.

    ARCO 3" Rotator: High-Resolution Framing and Field De-rotation

    The 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.

    Integrated Control: Single-Cable Connectivity with ASCOM and PLAY

    This 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.

    For 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.

  • What is the main advantage of the PrimaLuceLab ESATTO 4" and ARCO 3" bundle?

    The 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.

    What kind of telescopes is the ESATTO 4" focuser designed for?

    The 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.

    How does the ARCO 3" rotator work as a field de-rotator?

    When used with a telescope on an alt-azimuth mount, 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.

    What software do I need to control the PrimaLuceLab ESATTO 4" and ARCO 3"?

    You 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 PLAY software, which is designed to integrate control of all their devices into a single application.

    How does this bundle simplify my imaging setup's cable management?

    Instead 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.

    Can I use the ARCO 3" rotator to perfectly frame targets like the Horsehead Nebula (B33)?

    Yes. 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.

  • PrimaLuceLab 1-Year Warranty