PrimaLuceLab ESATTO 4" Robotic Focuser

Starting Price: $1,395.00
Price as Configured: $1,395.00
Brand: PrimaLuceLab / SKU: PLL-EST4
ESATTO 4" is the large dimensions robotic microfocuser that we designed for observatory class telescopes or for astrographs that need for large free aperture, like the Takahashi FSQ-106. Compared to the smaller models, ESATTO 4" offers a larger free aperture of 102mm, a longer draw tube travel of 35mm and a higher payload capacity of 10 kg, always with the technical features of all the ESATTO focusers: incredible resolution of 0.04 microns per step, USB-C port for computer control, WiFi connection with included Virtual HandPad and ARCO rotator port. Check out more about ESATTO (yes, it's Italian for "EXACT") below.

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PLL-3600310 - PrimaLuceLab Adapter ESATTO 4" for Takahashi FSQ-106
PLL-3600310 - PrimaLuceLab Adapter ESATTO 4" for Takahashi FSQ-106
About This Product
Adapter ESATTO 4" for Takahashi FSQ-106 allows you to install ESATTO 4" instead of the original Takahashi focuser. This adapter is designed to have, when used together with ESATTO 4", the same thickness of the original focuser in order to allow you to reach focus with the telescope. Not compatible with FSQ-106EDX 3 and 4.
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PLL-3600324 - PrimaLuceLab Adapter ESATTO 4" for Takahashi FSQ-106EDX 3 and 4
PLL-3600324 - PrimaLuceLab Adapter ESATTO 4" for Takahashi FSQ-106EDX 3 and 4
About This Product

Adapter ESATTO 4" for Takahashi FSQ-106EDX 3 and 4 allows you to install ESATTO 4" instead of the original Takahashi focuser. This adapter has 35mm optical thickness and it is designed to have, when used together with ESATTO 4", the same thickness of the original focuser (100.5mm) in order to allow you to reach focus with the telescope. Not compatible with standard FSQ-106.

$165.00 each
PLL-3600380 - PrimaLuceLab Adapter ESATTO 4" for Takahashi TOA130
PLL-3600380 - PrimaLuceLab Adapter ESATTO 4" for Takahashi TOA130
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Adapter ESATTO 4" for Takahashi TOA130 allows you to install ESATTO 4" instead of the original Takahashi focuser.

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PLL-3600310 - PrimaLuceLab Adapter ESATTO 4" for Takahashi FSQ-106
PLL-3600310 - PrimaLuceLab Adapter ESATTO 4" for Takahashi FSQ-106
$165.00
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PLL-3600310 - PrimaLuceLab Adapter ESATTO 4" for Takahashi FSQ-106
About This Product
Adapter ESATTO 4" for Takahashi FSQ-106 allows you to install ESATTO 4" instead of the original Takahashi focuser. This adapter is designed to have, when used together with ESATTO 4", the same thickness of the original focuser in order to allow you to reach focus with the telescope. Not compatible with FSQ-106EDX 3 and 4.
PLL-3600324 - PrimaLuceLab Adapter ESATTO 4" for Takahashi FSQ-106EDX 3 and 4
PLL-3600324 - PrimaLuceLab Adapter ESATTO 4" for Takahashi FSQ-106EDX 3 and 4
$165.00
« Back to All Add-ons
PLL-3600324 - PrimaLuceLab Adapter ESATTO 4" for Takahashi FSQ-106EDX 3 and 4
About This Product

Adapter ESATTO 4" for Takahashi FSQ-106EDX 3 and 4 allows you to install ESATTO 4" instead of the original Takahashi focuser. This adapter has 35mm optical thickness and it is designed to have, when used together with ESATTO 4", the same thickness of the original focuser (100.5mm) in order to allow you to reach focus with the telescope. Not compatible with standard FSQ-106.

PLL-3600380 - PrimaLuceLab Adapter ESATTO 4" for Takahashi TOA130
PLL-3600380 - PrimaLuceLab Adapter ESATTO 4" for Takahashi TOA130
$195.00
« Back to All Add-ons
PLL-3600380 - PrimaLuceLab Adapter ESATTO 4" for Takahashi TOA130
About This Product
Adapter ESATTO 4" for Takahashi TOA130 allows you to install ESATTO 4" instead of the original Takahashi focuser.

PLL-SESTOSENSO-TEMP - PrimaLuceLab Temperature Sensor for ECCO, SESTO SENSO and ESATTO
PLL-SESTOSENSO-TEMP - PrimaLuceLab Temperature Sensor for ECCO, SESTO SENSO and ESATTO
$25.00
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PLL-SESTOSENSO-TEMP - PrimaLuceLab Temperature Sensor for ECCO, SESTO SENSO and ESATTO
About This Product
This temperature sensor is compatible both with ECCO, the environmental computerized controller for EAGLE, and with SESTO SENSO and ESATTO, the robotic focusing solutions for telescopes. When used with ECCO, this temperature sensor allow it to record optics temperature for automatic power management of dew heaters connected to the EAGLE. When used with SESTO SENSO or ESATTO it's used in order to compensate focusing for changes in temperature (by using focusing software not provided with this sensor).
PLL-3600312 - PrimaLuceLab Adapter from M110 to M68 with Stop Ring for ESATTO 4"
PLL-3600312 - PrimaLuceLab Adapter from M110 to M68 with Stop Ring for ESATTO 4"
$195.00
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PLL-3600312 - PrimaLuceLab Adapter from M110 to M68 with Stop Ring for ESATTO 4"
About This Product
Adapter from M110 to M68 with stop ring for ESATTO 4" allows you to connect any camera or accessory with M68 female thread. Just thread this adapter to the M110 thread of the ESATTO 4" draw tube. Thanks to the M68 stop ring for ESATTO 4" you can also fix the camera at a precise angle in order to better frame your camera sensor at the desired object.
PLL-3600316 - PrimaLuceLab Adapter from M110 to M92 Female for ESATTO 4"
PLL-3600316 - PrimaLuceLab Adapter from M110 to M92 Female for ESATTO 4"
$155.00
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PLL-3600316 - PrimaLuceLab Adapter from M110 to M92 Female for ESATTO 4"
About This Product
Adapter from M110 to M92 female for ESATTO 4" converts M110x1 thread of the ESATTO 4" draw tube into a M92x1 female thread that is the same of the Takahashi original focuser. This way you can connect to ESATTO 4" the Takahashi photographic adapters.
PLL-3600319 - PrimaLuceLab Adapter from M110 to M95 Female for ESATTO 4"
PLL-3600319 - PrimaLuceLab Adapter from M110 to M95 Female for ESATTO 4"
$155.00
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PLL-3600319 - PrimaLuceLab Adapter from M110 to M95 Female for ESATTO 4"
About This Product
Adapter from M110 to M95 female for ESATTO 4" converts M110x1 thread of the ESATTO 4" draw tube into a M95x1 female thread. This way you can connect to ESATTO 4" the Takahashi photographic adapters.
PLL-3600322 - PrimaLuceLab Adapter from M110 to M98 with Stop Ring for ESATTO 4"
PLL-3600322 - PrimaLuceLab Adapter from M110 to M98 with Stop Ring for ESATTO 4"
$195.00
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PLL-3600322 - PrimaLuceLab Adapter from M110 to M98 with Stop Ring for ESATTO 4"
About This Product
Adapter from M110 to M98 with stop ring for ESATTO 4" allows you to connect any camera or accessory with M98 female thread. Just thread this adapter to the M110 thread of the ESATTO 4" draw tube. Thanks to the M98 stop ring for ESATTO 4" you can also fix the camera at a precise angle in order to better frame your camera sensor at the desired object.
PLL-3600325 - PrimaLuceLab M110 35mm Extension Tube for ESATTO 4"
PLL-3600325 - PrimaLuceLab M110 35mm Extension Tube for ESATTO 4"
$105.00
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PLL-3600325 - PrimaLuceLab M110 35mm Extension Tube for ESATTO 4"
About This Product
The M110 35mm extension tube can be directly threaded to the ESATTO 4" draw tube and allows you to fix camera and accessories further away from the ESATTO microfocuser. This M110 extension tube has 35mm thickness, it's made up of aluminum, black anodized and it has a M110 female on the camera side this way you can connect all the ESATTO 4" camera adapters.
PLL-3600326 - PrimaLuceLab Adapter ESATTO 4" for Officina Stellare ProRC, RiDK, RiFAst
PLL-3600326 - PrimaLuceLab Adapter ESATTO 4" for Officina Stellare ProRC, RiDK, RiFAst
$235.00
PLL-3600376 - PrimaLuceLab M110 10mm Extension Tube for ESATTO 4"
PLL-3600376 - PrimaLuceLab M110 10mm Extension Tube for ESATTO 4"
$105.00
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PLL-3600376 - PrimaLuceLab M110 10mm Extension Tube for ESATTO 4"
About This Product
Adapter from M81 to M65 with stop ring for ESATTO 3" and ARCO 3" allows you to connect any camera or accessory with M65 female thread. Just thread this adapter to the M81 thread of ESATTO 3" or ARCO 3". Thanks to the M65 stop ring you can also fix the camera at a precise angle in order to better frame your camera sensor at the desired object. Optical thickness is 4mm.
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Price as Configured: $1,395.00

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ESATTO 4” robotic focuser - main features:
  • Crayford style focuser with 40 ball bearings, specially designed for very high load capacity (up to 10 kgs) with no flexure
  • Low profile design with only 65mm thickness (91mm with internal flange).
  • 35mm focuser travel with an incredible resolution of 0.04 microns per step!
  • 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 Virtual HandPad app also for visual use!
  • 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: 2050 gr.
ESATTO 4" is the larger robotic focuser in the ESATTO family and, thanks to the large 102.2mm free aperture and high 10kg payload capacity, it's perfect for large professional telescopes usually found in observatories or for astrographs offering a large corrected image circle that require the use of focusers with large free aperture, like the Takahashi FSQ-106.



ESATTO 4" has all the most advanced technologies that allow you to get the best performance from your telescope: incredible resolution capacity of 0.04 microns per step, design with 40 bearings to offer exceptional precision and load capacity, reversible USB-C port for control from EAGLE or any external computer, ARCO port for use together with the optional robotic rotator, dimmable status LEDs that can also be turned off, WiFi connection with Virtual HandPad included for use even without a computer.

Thanks to special optics, Takahashi FSQ-106 is one of the best performing astrographs and it's used by the best astrophotographers in the world. The special internal corrector is so large that it requires a very large focuser to use it. For this reason ESATTO 4" is the ideal focuser for the Takahashi FSQ-106 telescope thus allowing remote and high precision control even of very heavy cameras and accessories.



In order to allow you to install ESATTO 4" in place of the original Takahashi focuser, PrimaLuceLab designed a special adapter that makes ESATTO 4" have the same thickness of the original focuser. In addition, we have created an adapter to be screwed to the M110x1 thread of the ESATTO 4" draw tube to convert it into an M92x1 female thread which is the same as the one on the original Takahashi focuser. In this way you can remove the original focuser, install ESATTO 4" with the optional adapters and you will find focus point with the same photographic adapters you used before!


ESATTO 4" installed on the Takahashi FSQ-106 (with the optional adapter) and with optional M92x1 adapter. The FSQ-106 telescope is shown with PLUS 125mm support rings.

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!