Wanting to change your stock focuser because it isn’t sturdy enough and lacks precision? Do you want to improve the internal focuser of your SCT telescope? ESATTO is the next generation robotic focuser for telescopes, specifically designed for astrophotography but, thanks to specific technologies developed by PrimaLuceLab, also works extremely well for visual use. Forget about external controllers and cumbersome hand pads - ESATTO is the ALL-IN-ONE focuser that has all the features you’ve dreamed of in a compact, sturdy focuser design.
ESATTO 2” robotic microfocuser - main features:
- Crayford style focuser with 18 ball bearings, specially designed for very high load capacity (up to 5 kgs) with no flexure - Low profile design with only 67mm thickness. - 15mm focuser travel with an incredible resolution of 0.04 microns per step! - Special adapters to easily connect to many different telescopes. - Remotely controlled from EAGLE or any Windows computer, with dedicated control software or ASCOM drivers. - USB-C connector offering greater reliability and can be connected to any USB type port thanks to the included cable. - Remote control with WiFi from any smartphone, tablet or computer and ESATTO Virtual HandPad app also for visual use! - Many camera threaded 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: 835 gr.
The best focuser mechanics and electronics in a compact body
The new ESATTO robotic microfocuser was born from our extensive experience in astrophotography and engineered with the uncompromising quality of PrimaLuceLab. We wanted to create the best motorized focuser in the world, with all the latest technical features, resulting in a compact and beautiful design only 67mm of thick.
Designed to give your telescopes the best performances for astrophotography
The special Crayford design with 18 ball bearings allows ESATTO 2” to have an impressive 5 kgs (11 lb) payload capacity with the focusing smoothness that is required by modern astrophotography techniques (eg. autofocusing with V-curve). ESATTO 2” has a draw tube with 51mm of free aperture, and 15mm of travel, offering to an incredible read resolution of 0.04 microns per step!
Many adapters available to connect to many telescopes
You don’t need to worry on how to connect ESATTO to your telescope - You can choose among the many models and adapters available! You can easily connect ESATTO 2” to telescopes like Schmidt-Cassegrains, Aplanatic Schmidt-Cassegrains, refractors, Cassegrains, Newtonians, and more! ESATTO truly is the universal focuser and if you can’t find an adapter for your telescope, just contact us!
Designed for remote control via a USB-C port from the EAGLE or from any Windows computer with a standard USB port
ESATTO has been specifically designed for easy remote operation in order to let your telescope take advantage of all the latest technology in astrophotography. ESATTO comes with a sturdy USB-C port (which you can connect to any USB type port thanks to the cable included in the box) to connect to EAGLE or any Windows computer (tested with Windows 10 computers), and control it via the provided FOCUSER Manager software or ASCOM driver. When connected to one of the USB 3.0 ports on the EAGLE (or any USB ports of Windows computers capable of at least 1A), the ESATTO can be powered and controlled via the one cable!
Designed for remote control via WiFi, from any smartphone, tablet or computer via the ESATTO Virtual HandPad app
ESATTO has built-in WiFi remote control capability so you can control it from any smartphone, tablet or computer! Just connect your device to the WiFi network of ESATTO and start the app - You will be able to control the focuser by using the dedicated ESATTO Virtual HandPad app. Thanks to convenient preset settings, you can easily record and move the focuser to specific predetermined positions - Great for visual use! WiFi control works even if ESATTO is also connected to a computer so you can control it simultaneously from 2 devices.
Focuser draw tube with M56x1 thread and stop ring for a perfect camera connection
We know that a perfect focuser is nothing without a solid connection to the camera. That's why, instead of using a normal 2" visual back, ESATTO 2" offers a M56x1 male thread (to let you attach SkyWatcher/Orion reducers for ED 80, 100 and 120 refractors) and, through a complete series of optional camera adapters with stop ring, it allows you to directly connect the most common DSLR, mirrorless and CCD or CMOS cooled cameras directly at the focuser. The stop ring allows you to lock the camera at a precise angle to better frame the object to be photographed. The stop ring adapters are available in many different sizes: this way you can connect, with maximum rigidity and comfort, any camera or accessory.
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! ESATTO and ARCO are designed to work together - You will need only one short interconnect between the two!
Tutti (con adattatori opzionali)
Micrometric focus knob
Loading up to (Kg)
Thickness when closed (mm)
Use spaces to separate tags. Use single quotes (') for phrases.
Best focuser I've had review by Anssi Pitkänen on 11/12/2020
Esatto 2 moves quickly, quantifies the focuser position, has programmable presets that you can use for instance to narrow down to optimal focus, and eliminates focuser shift and the vibration from touching your focuser - and thus the telescope.
Together these qualities makes it very fast to assess overall seeing conditions, find sub-seeing focus - where the clear image will appear once those brief moments of still seeing occur - and to refocus for your camera, particularly with the help of your device’s own focuser helpers, like FWHM and the brightest pixel. Very helpful on filter change and to check focus over the course of the night.
ESATTO 2" review by Fabio on 8/31/2019
Finalmente ho potuto installarlo sul mio nuovo RC8. Con l'adattatore PL3600235 è stato un gioco da ragazzi. Devo dire che mi ha soddisfatto pienamente sia per la robustezza che per la stabilità (ho ruota portafiltri a 7 posizioni e una camera CCD QHY9). La sua interfaccia software è semplice ed intuitiva e non ho avuto il minimo problema nella configurazione e poi nell'uso...non posso dire altro di essere pienamente soddisfatto.
Thanks to the many available adapters, you can easily use ESATTO as the new focuser for refractors and improve performance, especially in astrophotography. Refractors, and especially the apochromatic models, are perfect instruments for astrophotography since they haven't a very long focal length (you can use them for very long exposures also with affordable mounts) and they combine very good performance with easy of use. But many refractors use a focuser that may not be able to adequately support your camera and the accessories used in astrophotography: let's see how you can improve your refractor telescope by replacing the focuser with ESATTO.
EdgeHD telescopes by Celestron are great instruments also for astrophotography if you use an external focuser instead of the internal one: in this article we discover why ESATTO is the perfect microfocuser also for EdgeHD telescopes! In fact, by using an external focuser, you can remotely control the focus and you avoid all the problems related to image shift and mirror flop. And the advantages are not only for astrophotography but also for visual use since ESATTO comes with Virtual HandPad so you can use is also without a computer.
How to choose the best focusing systems for telescopes? Our SESTO SENSO robotic focusing motor and ESATTO robotic microfocuser offer the same basic features but different designs in order to offer you the best focusing solution, both for astrophotography and visual use. In this article we analyze the main differences between the 2 devices and we suggest what model is the best based on the telescope you have and the application you want to use. This way you will learn why our SESTO SENSO robotic focusing motor and ESATTO robotic microfocuser are the best focusing systems for telescopes and how you can use them in order to improve your telescope.
ESATTO is the perfect focuser for Ritchey-Chretien telescopes, that are great instruments for deep-sky astrophotography at medium-long focal length. Ritchey-Chretien telescopes were, just a few years ago, very expensive but now are affordable and allow any amateur astronomer to own and use a Ritchey-Chretien telescope. Unfortunately these telescopes comes standard with a focuser that has not the load capacity requested for the heavy cameras and accessories commonly used in deep-sky astrophotography: let's see how you can use ESATTO as a new and better focuser for Ritchey-Chretien.
If you are looking for a focuser for Schmidt-Cassegrain or for aplanatic telescopes (like EdgeHD by Celestron), ESATTO is the perfect solution! In this article we see how ESATTO improves focus and how it installs on these telescopes. Schmidt-Cassegrains and EdgeHD are great instruments because they combine high performance with ease of use (for example, they are simple to collimate) and portability (they are among the most compact optical tubes, although the diameter can also be large). However, the internal focuser of these telescopes (which allows focusing by moving the primary mirror) generates image shift and mirror flop problems that we can now avoid thanks to ESATTO.