ESATTO 4" by PrimaLuceLab: Large Robotic Microfocuser
PrimaLuceLab's ESATTO 4" is a large-scale robotic microfocuser designed to meet the requirements of the most advanced observatory-class telescopes and astrographs. With its ability to handle heavy loads and unrivalled precision performance, it is a must-have solution for professional astrophotographers and discerning amateurs alike.
Advanced technical features
- Exceptional precision: Resolution of 0.04 microns per step, guaranteeing ultra-fine focus adjustment, ideal for large-format sensors and demanding optics.
- Impressive load capacity : Supports up to 10 kg, thanks to a reinforced Crayford design with 28 ball bearings, eliminating any mechanical play or bending.
- Extended race : A 35 mm focal length, offering maximum flexibility for complex configurations.
- Open to the public : Internal diameter of 102.2 mm, optimized for large-format sensors and wide-field instruments.
Backfocus
- Minimum optical thickness : Only 65 mm, ensuring compact integration into your setup. With the internal flange, this thickness rises to 91 mm, offering additional scope for adjusting the optical train.
- Universal compatibility : The standard M110x1 male thread allows the use of specific adapters to perfectly adjust the backfocus to the cameras, correctors or reducers used.
- The included clamping ring locks the camera or accessory at a precise angle, making framing easier.
Connectivity and control
- Robust USB-C port : Allows fast, reliable connection to a Windows computer or EAGLE system. A single cable powers and controls the focuser (minimum 1A required).
- Integrated WiFi : Wireless control via Virtual HandPad application on smartphone or tablet.
- PLAY software included: Compatible with ASCOM and proprietary PLAY software, for centralized control of all your PrimaLuceLab equipment.
Extended compatibility
- The ESATTO 4" is designed to fit a wide range of instruments:
- Suitable for telescopes such as astrographs, Ritchey-Christian, Newtonian or large-format refractors.
- Compatible with large-format sensors thanks to its exceptional free aperture.
 
- Native integration with ARCO 3" rotator, enabling precise camera rotation for framing or field rotation on altazimuthal mounts.
Robustness and premium design
- Designed in aircraft-grade materials, guaranteeing durability and lightness despite its imposing dimensions (total weight: approx. 2 kg).
- Dimmable LEDs with "DARK" mode to avoid light pollution during night sessions.
In the Box
- ESATTO 4" microfocuser
- A robust USB-C cable
- Detailed user manual
Specific adapters (telescope or camera) are sold separately, depending on the specific requirements of your configuration.
Distinctive features
- Ultra-fine resolution (0.04 micron/step).
- Exceptional payload (10 kg).
- Optimized backfocus (65 mm minimum).
- Massive clear aperture (102.2 mm) for large-format sensors.
- Direct integration with ARCO 3" for rotation/derotation.
- Advanced connectivity via USB-C or WiFi.
Conclusion
The ESATTO 4" is designed for astrophotographers looking for a robust, precise and versatile system capable of handling complex configurations while maximizing the quality of the images captured.