PrimaLuceLab - ARCO 2" Robotic Rotator

SKU
PRI-PLLARCO2
$695.00
Availability : In Stock
Free Shipping Available

The PrimaluceLab ARCO 2" is the latest low-profile ARC second resolution rotator, offering unparalleled precision with its incredible resolution of 1 arc second per step. As the most accurate camera rotator and field de-rotator available, the ARCO 2” boasts a thickness of just 20mm and a clear aperture of 50.9mm.

When paired with an equatorially mounted telescope, the ARCO allows for seamless camera rotation without the need for manual adjustment. Additionally, when used with an alt-az mount (without a wedge), it functions as a field de-rotator, making long-exposure astrophotography more accessible than ever before.

The ARCO connects effortlessly with a single short cable to ESATTO or SESTO SENSO 2 and can be controlled via EAGLE, any Windows computer, or even a smartphone or tablet through WiFi, providing versatile and convenient control options for all your astrophotography needs.

PrimaLuceLab ARCO 2" Robotic Rotator

The PrimaluceLab ARCO 2" is the latest innovation in low-profile ARC second resolution rotators, delivering unmatched precision with an exceptional resolution of 1 arc second per step. This makes the ARCO 2” the most accurate camera rotator and field de-rotator available on the market. With a sleek thickness of only 20mm and a generous clear aperture of 50.9mm, the ARCO 2” is engineered for optimal performance.

The PrimaluceLab ARCO 2” represents a pinnacle in astrophotography accessories, combining precision, versatility, and user-friendly features. Whether you are rotating your camera for the perfect shot or de-rotating the field for long exposures, the ARCO 2” ensures your astrophotography sessions are efficient, precise, and enjoyable.

Primaluce Lab ARCO 2" Features

  • Ultra-slim design with a body thickness of just 20mm
  • High precision with 1 arc second resolution per step
  • Generous 50.9mm clear aperture
  • Requires no external USB or 12V power cables; connects to ESATTO or SESTO SENSO 2 with a single short cable
  • Streamlined design with no protruding parts, preventing interference with your camera, accessories, or telescope
  • Compatible with PLAY, the Prima Luce Astrophotography software
  • Includes an ASCOM driver for seamless camera rotation control with third-party software
  • Robust full aluminum casing, capable of supporting heavy cameras and accessories without flexure
  • Works with all M56 adapters with stop ring for easy connection to any camera and accessory
  • Adapters available for connection to all ESATTO focusers and focusers equipped with SESTO SENSO 2
  • Lightweight design, weighing just 435 grams

Precision, Design and Aperture

Ultra-Precise Rotator: The ARCO 2” offers a remarkable resolution of 1 arc second per step, ensuring pinpoint accuracy for camera rotation and field de-rotation, essential for capturing flawless astrophotographic images.


Slim Design: With a body thickness of just 20mm, the ARCO 2” maintains a low profile, minimizing any potential obstructions or interference with other equipment.


Generous Aperture: The 50.9mm free aperture accommodates a wide range of optical setups, ensuring maximum compatibility and flexibility.

Versatile Applications

Equatorial Mount Compatibility: When used with an equatorially mounted telescope, the ARCO 2” allows seamless and precise camera rotation without the need for manual adjustments, streamlining your astrophotography workflow.


Alt-Az Mount Functionality: The ARCO 2” also excels when used with an alt-az mount (without a wedge), functioning as a field de-rotator. This capability significantly enhances long-exposure astrophotography, making it easier than ever to capture detailed images of the night sky.

Seamless Integrations

Effortless Connectivity: The ARCO 2” connects effortlessly to ESATTO or SESTO SENSO 2 with a single short cable, eliminating the need for cumbersome external USB or 12V power cables.


Advanced Control Options: The rotator can be controlled via the EAGLE control unit, any Windows computer, or even a smartphone or tablet through WiFi, offering a range of versatile and convenient control options to suit your preferences.

Additional Benefits

No Protruding Parts: The streamlined design ensures no protruding parts, preventing any interference with your camera, accessories, or telescope setup.

Robust Construction: Encased in a specially designed full aluminum body, the ARCO 2” can support heavy cameras and accessories without any flexure, ensuring stable and reliable operation.

Software Compatibility: The ARCO 2” works seamlessly with PLAY, the Prima Luce Astrophotography software, and includes an ASCOM driver for control through third-party software.

Wide Compatibility: Compatible with all M56 adapters with a stop ring, the ARCO 2” can be easily connected to any camera and accessory. Adapters are also available for integration with all ESATTO focusers and focusers equipped with SESTO SENSO 2.

Lightweight Design: Weighing only 435 grams, the ARCO 2” adds minimal weight to your setup while delivering maximum functionality.

PLAY Software

The ARCO rotator comes with PLAY, the astrophotography software developed by PrimaLuceLab, designed to help you capture stunning images of the night sky with ease, using the telescope, mount, and accessories of your choice! PLAY offers a comprehensive suite of features essential for astrophotography, allowing you to configure your setup by selecting an OTA and mount equipped with ASCOM drivers (compatible with ASCOM platform 6.5 and later). You can control focusing with ESATTO or SESTO SENSO 2, and manage camera rotation with ARCO.

To use PLAY, you need at least an ESATTO focuser or a SESTO SENSO 2 focusing motor. If you install PLAY on the EAGLE computer, it unlocks even more advanced features, enhancing your astrophotography experience.

Pair with ESATTO or SESTO SENSO

The ARCO 2" rotator is designed for seamless integration with various systems, ensuring compatibility and ease of use across different setups.

Compatibility with ESATTO Focusers:

You can effortlessly connect the ARCO 2" to any ESATTO focuser using the appropriate optional adapters:

  • ESATTO 2": Use the PL3600412 adapter.
  • ESATTO 3": Use the PL3600416 adapter.
  • ESATTO 4": Use the PL3600423 adapter.

Each adapter ensures a secure connection, and the ARCO cable included in the box allows for straightforward control.

Integration with SESTO SENSO 2:

If your telescope uses a SESTO SENSO 2 focusing motor, the ARCO 2" can also be easily connected:

  • For focusers with a standard 2” visual back, use the optional PL3600413 2" nosepiece for ARCO 2”.
  • For focusers with an M48 male thread (commonly found on correctors/reducers), use the PL3600424 M48x0.75 female adapter for ARCO 2”.

Similar to the ESATTO setup, the ARCO 2" connects to SESTO SENSO 2 with the provided cable, ensuring a smooth and efficient workflow.

By offering flexible connectivity options, the ARCO 2" rotator seamlessly integrates with your existing equipment, enhancing your astrophotography experience with precise and reliable performance.

M54 Compatibility

The ARCO 2" rotator features an M56x1 male thread, identical to the camera side of the ESATTO 2” draw tube. This allows you to easily connect a variety of cameras and accessories using optional M56 adapters with a stop ring. Here are the available adapters for different thread types:

  • PL3600218: For cameras or accessories with a T2 thread
  • PL3600216: For cameras or accessories with an M48 thread
  • PL3600225: For accessories with an SC thread
  • PL3600242: For cameras or accessories with an M54 thread
  • PL3600227: For accessories with an M57 thread
  • PL8410001: 2” visual back for connecting cameras or accessories with a 2” nosepiece

These adapters ensure compatibility with a wide range of equipment, making the ARCO 2" a versatile addition to your astrophotography setup.

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Brand PrimaluceLab
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