Achieve precise and automated focusing control for your astrophotography setup with the PrimaLuce Lab ESATTO 3.5" LP robotic focuser. This advanced and innovative focuser brings unparalleled accuracy and convenience to your imaging sessions. With its motorized operation and impressive 35mm drawtube travel, the ESATTO 3.5" LP enables precise adjustments to achieve optimal focus with ease.

Designed for telescopes with a 3.5" Low Profile (LP) connection, this robotic focuser ensures a secure and stable connection, minimizing flexure and allowing for smooth and precise focusing. The ESATTO's high-resolution stepper motor provides fine-grained control, allowing you to achieve pinpoint focus for capturing stunningly detailed celestial images.

Compatible with various astrophotography software, the ESATTO 3.5" LP can be easily integrated into your existing setup, enabling seamless automation and remote control. Its robust build quality and reliable performance make it a trusted companion for astrophotographers, ensuring consistent and repeatable focusing precision.

Upgrade your astrophotography capabilities with the PrimaLuce Lab ESATTO 3.5" LP robotic focuser. Experience the convenience of automated and precise focusing, allowing you to spend more time capturing breathtaking celestial images and less time struggling with manual adjustments. Take your astrophotography to new heights with this exceptional robotic focuser, designed to enhance your imaging workflow and deliver exceptional results.

The best low profile robotic focuser

The ESATTO 3,5” low profile robotic focuser has been designed to meet the most demanding requests of telescopes with low backfocus, like many astrographs. This way, with a body thickness of just 32mm, you can take advantage of a motorized focuser with a very large 90.0mm free aperture that is able to carry up 10 kg of imaging accessories.

Designed to give your telescopes the best performances for astrophotography

The special design gives ESATTO 3,5” LP an impressive 10 kg (22 lb) of payload capacity with the focusing smoothness that is required by modern astrophotography techniques (eg. autofocusing with V-curve). ESATTO 3,5” LP has a draw tube with 90.0mm of free aperture, and 10mm of travel, offering to an incredible resolution of 0.01 microns per step!

Many adapters available to connect to telescopes and cameras

ESATTO 3,5” LP draw tube travel moves on the telescope side and different optional pre-made adapters are already available to connect to different telescopes. If you can’t find the adapter for your telescope, in the user manual you find the dimensions of the telescope side adapter so you can manufacture your custom adapter. On the camera side, ESATTO 3,5” LP has a M98x1 female thread and, through a complete series of optional camera adapters with stop ring, it allows you to directly connect cameras or to the ARCO rotator. The stop ring allows you to lock the camera at a precise angle to better frame the object.

Connect with a single cable to ARCO to remotely control also the camera rotator and field de-rotator

ESATTO includes a special port allowing ARCO, the camera rotator and field de-rotator, to be directly connected. With ARCO, you can remotely control the rotation angle of your camera in order to achieve perfect framing of the object you want to record. If you have an alt-az mount, you can use ARCO to de-rotate the field without the need of an equatorial wedge! By connecting ESATTO 3,5” LP to ARCO 3” you will have a rotating focuser in just 58.5mm of thickness and 76.3mm of free aperture.

Specifications

- Special low profile design for high load capacity (up to 10 kgs) and precision.

- Low profile with only32mm thickness.

- 10mm focuser travel with an incredible resolution of 0.01 microns per step!

- Special optional adapters to easily connect to many different telescopes.
- Remotely controlled from EAGLE or any Windows computer, it's also provided with ASCOM driver.
- USB-C connector offering greater reliability and can be connected to any USB type port thanks to the included cable.
- It works also with PLAY astrophotography software, much more than a standalone program.
- Remote control with WiFi from any smartphone, tablet or computer and ESATTO Virtual HandPad app for visual use!

-Many threaded camera adapters with stop ring on the camera side to rotate and keep the camera in the optical axis.

- ARCO port to easily connect the ARCO camera rotator and field de-rotator to the ESATTO without the need for additional USB or 12V power cables.

- Weight: 1150 gr.

Downloads

PrimaLuceLab software download page