ARCO 2" robotic rotator (PrimaLuceLab, SKU: PLLARCO2 ) is a low-profile, fully remote-controlled camera rotator with a resolution of 1 arcsec/step . It provides precise subject framing without introducing mechanical play, and thanks to its free 50.9mm aperture it does not vignette full-frame sensors. At only 23mm thick, ARCO 2" can be added to most setups without breaking the back-focus budget.

Key Features of ARCO 2"

• continuous rotation 0 – 360° with a resolution of 1 arcsec/step
• 50.9 mm free aperture – full illumination of the full-frame sensor
• ultra-low thickness of 23 mm – minimal impact on the back-focus of the system
• one power supply and control: USB-C + ARCO port – the rotator can be powered directly from ESATTO or SESTO SENSO 2 lifts*
• built-in Wi-Fi ( Virtual HandPad ) – camera framing from the browser
• status LEDs with the option to turn off
• M6 threads of the PLUS system – easy assembly of clamps and PrimaLuceLab accessories

Set components

• ARCO 2" rotator
• USB-C ↔ USB-A cable (1.5 m)
• ARCO ↔ ESATTO / SESTO SENSO 2 cable*
• 12V DC / 5A power supply (5.5 × 2.5mm)
• a set of mounting screws and Allen keys
• user manual

Technical parameters

• free aperture: 50.9 mm
• body thickness: 23 mm
• resolution: 1 arcsec/step
• rotation range: 0 – 360° (continuous)
• interfaces: USB-C, Wi-Fi 2.4 GHz, ARCO port
• power supply: 12 V DC / 0.4 A (center positive)
• compatibility: ESATTO (all models) and SESTO SENSO 2* extractors
• manufacturer: PrimaLuceLab – Italy

ARCO 2" is a precision remote framing tool, ideal for mobile and stationary astrophotography setups. When combined with ESATTO or SESTO SENSO focusers, it creates a compact, fully automated focusing and rotation system.

*For use with SESTO SENSO 2, the optional ARCO → SESTO cable is required.