Home > Focusers > Electronic & Motorized Focusers >
PrimaLuceLab ESATTO 3” Robotic Focuser

PrimaLuceLab ESATTO 3” Robotic Focuser

Starting Price: $945.00
Price as Configured: $945.00
Brand: PrimaLuceLab / SKU: PLL-EST3
ESATTO robotic microfocuser is also available in a larger 3" version: 76mm free aperture, 25mm of draw tube travel, 8kg of payload capacity and an incredible resolution of 0,04 micron per step! The perfect solution for apochromatic refractors and Ritchey-Chretien or Cassegrain telescopes, and heavy imaging trains with large cameras and accessories like off axis guiders, filter wheels and adaptive optics. And you can also expand ESATTO features by adding the ARCO robotic camera rotator!
Recommended Add-ons and Accessories
Product Price Quantity
PLL-SESTOSENSO-TEMP - PrimaLuceLab Temperature Sensor for ECCO, SESTO SENSO and ESATTO
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).
$25.00 each
PLL-8410002 - PrimaLuceLab 2" Visual Back for ESATTO 3"
PLL-8410002 - PrimaLuceLab 2" Visual Back for ESATTO 3"
About This Product
If you want to use your telescope visually with the PrimaLuceLab ESATTO 3" or if you want to connect a camera with a 2" nosepiece, just connect the 2" visual back for ESATTO 3" to the M81 thread of the focuser draw tube. This adapter has an internal brass compression ring to avoid scratching the inserted nosepiece as well as 3 locking screws (120° separation) for a perfect fit, even for heavy cameras or accessories.
$85.00 each
PLL-8410010 - PrimaLuceLab 3" Visual Back for ESATTO 3" and ARCO 3"
PLL-8410010 - PrimaLuceLab 3" Visual Back for ESATTO 3" and ARCO 3"
About This Product
If you want to connect a camera with a 3" nosepiece to your PrimaLuceLab ESATTO 3" or ARCO 3", just connect the 3" visual back to the M81 thread of ESATTO 3" or ARCO 3". This adapter has an internal brass compression ring to avoid scratching the inserted nosepiece as well as 3 locking screws (120° separation) for a perfect fit, even for heavy cameras or accessories.
$85.00 each
PLL-3600284 - PrimaLuceLab 65mm Extension Tube for ESATTO 3"
PLL-3600284 - PrimaLuceLab 65mm Extension Tube for ESATTO 3"
About This Product
When installing the PrimaLuceLab ESATTO 3" in a telescope with a long travel focuser (such as those usually found on refractors), it is necessary to take into account the lower travel of the ESATTO 3" since it's a micrometric focuser. For this reason PrimaLuceLab has designed this 65mm extension that can be installed between the ESATTO 3" and the telescope tube. A precise dovetail coupling system with 3 screws set at 120° allows you to manually rotate the focuser.
$138.00 each
PLL-3600285 - PrimaLuceLab M81 25mm Extension Tube for ESATTO 3"
PLL-3600285 - PrimaLuceLab M81 25mm Extension Tube for ESATTO 3"
About This Product
The M81 25mm extension tube can be directly threaded to the PrimaLuceLab ESATTO 3" draw tube and allows you to fix camera and accessories further away from the ESATTO microfocuser. This M81 extension tube has 25mm thickness, it's made up of aluminum, black anodized and it has a M81 female on the camera side so you can connect all the ESATTO 3" camera adapters.
$59.00 each
PLL-3600317 - PrimaLuceLab 40mm Extension Tube for ESATTO 3"
PLL-3600317 - PrimaLuceLab 40mm Extension Tube for ESATTO 3"
About This Product
When installing ESATTO 3" in a telescope with a long travel focuser (such as those usually found on refractors), it is necessary to take into account the lower travel of ESATTO 3" since it's a micrometric focuser. For this reason we have designed this 40mm extension that can be installed between ESATTO 3" and the telescope tube. A precise dovetail coupling system with 3 screws set at 120° allows you to manually rotate the focuser.

$125.00 each
View More Add-ons and Accessories

Recommended Add-ons and Accessories

Enter the quantity desired for each item and click the close button to continue with your purchase.
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
Qty:
View Details
« Back to All Add-ons
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-8410002 - PrimaLuceLab 2" Visual Back for ESATTO 3"
PLL-8410002 - PrimaLuceLab 2" Visual Back for ESATTO 3"
$85.00
Qty:
View Details
« Back to All Add-ons
PLL-8410002 - PrimaLuceLab 2" Visual Back for ESATTO 3"
About This Product
If you want to use your telescope visually with the PrimaLuceLab ESATTO 3" or if you want to connect a camera with a 2" nosepiece, just connect the 2" visual back for ESATTO 3" to the M81 thread of the focuser draw tube. This adapter has an internal brass compression ring to avoid scratching the inserted nosepiece as well as 3 locking screws (120° separation) for a perfect fit, even for heavy cameras or accessories.
PLL-8410010 - PrimaLuceLab 3" Visual Back for ESATTO 3" and ARCO 3"
PLL-8410010 - PrimaLuceLab 3" Visual Back for ESATTO 3" and ARCO 3"
$85.00
Qty:
View Details
« Back to All Add-ons
PLL-8410010 - PrimaLuceLab 3" Visual Back for ESATTO 3" and ARCO 3"
About This Product
If you want to connect a camera with a 3" nosepiece to your PrimaLuceLab ESATTO 3" or ARCO 3", just connect the 3" visual back to the M81 thread of ESATTO 3" or ARCO 3". This adapter has an internal brass compression ring to avoid scratching the inserted nosepiece as well as 3 locking screws (120° separation) for a perfect fit, even for heavy cameras or accessories.
PLL-3600284 - PrimaLuceLab 65mm Extension Tube for ESATTO 3"
PLL-3600284 - PrimaLuceLab 65mm Extension Tube for ESATTO 3"
$138.00
Qty:
View Details
« Back to All Add-ons
PLL-3600284 - PrimaLuceLab 65mm Extension Tube for ESATTO 3"
About This Product
When installing the PrimaLuceLab ESATTO 3" in a telescope with a long travel focuser (such as those usually found on refractors), it is necessary to take into account the lower travel of the ESATTO 3" since it's a micrometric focuser. For this reason PrimaLuceLab has designed this 65mm extension that can be installed between the ESATTO 3" and the telescope tube. A precise dovetail coupling system with 3 screws set at 120° allows you to manually rotate the focuser.
PLL-3600285 - PrimaLuceLab M81 25mm Extension Tube for ESATTO 3"
PLL-3600285 - PrimaLuceLab M81 25mm Extension Tube for ESATTO 3"
$59.00
Qty:
View Details
« Back to All Add-ons
PLL-3600285 - PrimaLuceLab M81 25mm Extension Tube for ESATTO 3"
About This Product
The M81 25mm extension tube can be directly threaded to the PrimaLuceLab ESATTO 3" draw tube and allows you to fix camera and accessories further away from the ESATTO microfocuser. This M81 extension tube has 25mm thickness, it's made up of aluminum, black anodized and it has a M81 female on the camera side so you can connect all the ESATTO 3" camera adapters.
PLL-3600317 - PrimaLuceLab 40mm Extension Tube for ESATTO 3"
PLL-3600317 - PrimaLuceLab 40mm Extension Tube for ESATTO 3"
$125.00
Qty:
View Details
« Back to All Add-ons
PLL-3600317 - PrimaLuceLab 40mm Extension Tube for ESATTO 3"
About This Product
When installing ESATTO 3" in a telescope with a long travel focuser (such as those usually found on refractors), it is necessary to take into account the lower travel of ESATTO 3" since it's a micrometric focuser. For this reason we have designed this 40mm extension that can be installed between ESATTO 3" and the telescope tube. A precise dovetail coupling system with 3 screws set at 120° allows you to manually rotate the focuser.

PLL-3600236 - PrimaLuceLab Adapter ESATTO 3" for GSO/Orion/TPO Ritchey-Chretien 10, 12, 14 and 16 inches
PLL-3600236 - PrimaLuceLab Adapter ESATTO 3" for GSO/Orion/TPO Ritchey-Chretien 10, 12, 14 and 16 inches
$125.00
Qty:
View Details
« Back to All Add-ons
PLL-3600236 - PrimaLuceLab Adapter ESATTO 3" for GSO/Orion/TPO Ritchey-Chretien 10, 12, 14 and 16 inches
About This Product
This adapter allows you to connect PrimaLuceLab ESATTO 3" to the M117 thread of  the GSO/Orion/TPO Ritchey-Chretien 10, 12, 14 and 16 inches (both aluminum and cabron tubes) for astrophotography. You can use the standard extensions that come with the RC telescope in order to install the focuser at a precise distance from the OTA. Based on the camera and accessories train you want to connect, you may need extenders to reach the focus with your camera.
PLL-3600245 - PrimaLuceLab Adapter ESATTO 3" for Takahashi Telescopes with M72 Thread
PLL-3600245 - PrimaLuceLab Adapter ESATTO 3" for Takahashi Telescopes with M72 Thread
$115.00
Qty:
View Details
« Back to All Add-ons
PLL-3600245 - PrimaLuceLab Adapter ESATTO 3" for Takahashi Telescopes with M72 Thread
About This Product
Thanks to its low profile, the ESATTO 3" is the perfect motorized focuser for Takahashi telescopes with M72 thread. By adding the M72 adapter, you can thread the ESATTO 3" focuser directly onto the back of these telescopes, and use the ESATTO to achieve more precise focus.
PLL-3600252 - PrimaLuceLab Adapter from M81 to M72 Female for ESATTO 3"
PLL-3600252 - PrimaLuceLab Adapter from M81 to M72 Female for ESATTO 3"
$87.00
Qty:
View Details
« Back to All Add-ons
PLL-3600252 - PrimaLuceLab Adapter from M81 to M72 Female for ESATTO 3"
About This Product
Adapter from M81 to M72 female for ESATTO 3" allows you to connect any camera or accessory with M72 male thread. Just thread this adapter to the M81 thread of the ESATTO 3" draw tube.
PLL-3600253 - PrimaLuceLab Adapter ESATTO 3" for SkyWatcher ESPRIT 120 ED and 150ED
PLL-3600253 - PrimaLuceLab Adapter ESATTO 3" for SkyWatcher ESPRIT 120 ED and 150ED
$255.00
Qty:
View Details
« Back to All Add-ons
PLL-3600253 - PrimaLuceLab Adapter ESATTO 3" for SkyWatcher ESPRIT 120 ED and 150ED
About This Product
Adapter ESATTO 3" for SkyWatcher ESPRIT 120 ED and 150 ED
PLL-3600262 - PrimaLuceLab Adapter from M81 to M68 with Stop Ring for ESATTO 3"
PLL-3600262 - PrimaLuceLab Adapter from M81 to M68 with Stop Ring for ESATTO 3"
$110.00
Qty:
View Details
« Back to All Add-ons
PLL-3600262 - PrimaLuceLab Adapter from M81 to M68 with Stop Ring for ESATTO 3"
About This Product
Adapter from M81 to M68 with stop ring for the PrimaLuceLab ESATTO 3" allows you to connect any camera or accessory with M68 female thread. Just thread this adapter to the M81 thread of the ESATTO 3" draw tube. Thanks to the M68 stop ring for ESATTO 3" you can also fix the camera at a precise angle in order to better frame your camera sensor at the desired object.
PLL-3600268 - PrimaLuceLab Adapter ESATTO 3" for Borg 90FL and 107FL f3.9
PLL-3600268 - PrimaLuceLab Adapter ESATTO 3" for Borg 90FL and 107FL f3.9
$195.00
Qty:
View Details
« Back to All Add-ons
PLL-3600268 - PrimaLuceLab Adapter ESATTO 3" for Borg 90FL and 107FL f3.9
About This Product
If you are searching for the most precise motorized focuser for Borg 90FL and 107FL f3.9, this adapter allows you to connect ESATTO 3" to these telescopes. Remove the original focuser of the Borg 90FL and 107FL f3.9 and install ESATTO 3". In order to reach the focus you can use the same photo adapters that you use with the standard focuser.
PLL-3600271 - PrimaLuceLab Adapter ESATTO 3" for Takahashi FSQ-85
PLL-3600271 - PrimaLuceLab Adapter ESATTO 3" for Takahashi FSQ-85
$95.00
Qty:
View Details
« Back to All Add-ons
PLL-3600271 - PrimaLuceLab Adapter ESATTO 3" for Takahashi FSQ-85
About This Product
This adapter allows you to connect the PrimaLuceLab ESATTO 3" to the Takahashi FSQ85 telescope. By adding the M81 to M72 adapter with stop ring you can also connect your Takahashi accessories. Based on the camera and accessories train you want to connect, you may need extenders to reach the focus with your camera.
PLL-3600272 - PrimaLuceLab Adapter from M81 to M72 with Stop Ring for ESATTO 3"
PLL-3600272 - PrimaLuceLab Adapter from M81 to M72 with Stop Ring for ESATTO 3"
$110.00
Qty:
View Details
« Back to All Add-ons
PLL-3600272 - PrimaLuceLab Adapter from M81 to M72 with Stop Ring for ESATTO 3"
About This Product
Adapter from M81 to M72 with stop ring for the PrimaLuceLab ESATTO 3" allows you to connect any camera or accessory with M72 female thread. Just thread this adapter to the M81 thread of the ESATTO 3" draw tube. Thanks to the M72 stop ring for ESATTO 3" you can also fix the camera at a precise angle in order to better frame your camera sensor at the desired object.
PLL-3600275 - PrimaLuceLab Adapter from M81 to M54 with Stop Ring for ESATTO 3"
PLL-3600275 - PrimaLuceLab Adapter from M81 to M54 with Stop Ring for ESATTO 3"
$110.00
Qty:
View Details
« Back to All Add-ons
PLL-3600275 - PrimaLuceLab Adapter from M81 to M54 with Stop Ring for ESATTO 3"
About This Product
Adapter from M81 to M54 with stop ring for the PrimaLuceLab ESATTO 3" allows you to connect any camera or accessory with M54 female thread. Just thread this adapter to the M81 thread of the ESATTO 3" draw tube. Thanks to the M54 stop ring for ESATTO 3" you can also fix the camera at a precise angle in order to better frame your camera sensor at the desired object.
PLL-3600277 - PrimaLuceLab Adapter from M81 to M48 with Stop Ring for ESATTO 3"
PLL-3600277 - PrimaLuceLab Adapter from M81 to M48 with Stop Ring for ESATTO 3"
$110.00
Qty:
View Details
« Back to All Add-ons
PLL-3600277 - PrimaLuceLab Adapter from M81 to M48 with Stop Ring for ESATTO 3"
About This Product
Adapter from M81 to M48 with stop ring for the PrimaLuceLab ESATTO 3" allows you to connect any camera or accessory with M48 female thread. Just thread this adapter to the M81 thread of the ESATTO 3" draw tube. Thanks to the M48 stop ring for ESATTO 3" you can also fix the camera at a precise angle in order to better frame your camera sensor at the desired object.
PLL-3600279 - PrimaLuceLab Adapter from M81 to M57 with Stop Ring for ESATTO 3"
PLL-3600279 - PrimaLuceLab Adapter from M81 to M57 with Stop Ring for ESATTO 3"
$110.00
Qty:
View Details
« Back to All Add-ons
PLL-3600279 - PrimaLuceLab Adapter from M81 to M57 with Stop Ring for ESATTO 3"
About This Product
Adapter from M81 to M57 with stop ring for the PrimaLuceLab ESATTO 3" allows you to connect any camera or accessory with M57 female thread. Just thread this adapter to the M81 thread of the ESATTO 3" draw tube. Thanks to the M57 stop ring for ESATTO 3" you can also fix the camera at a precise angle in order to better frame your camera sensor at the desired object.
PLL-3600282 - PrimaLuceLab Adapter from M81 to T2 with Stop Ring for ESATTO 3"
PLL-3600282 - PrimaLuceLab Adapter from M81 to T2 with Stop Ring for ESATTO 3"
$110.00
Qty:
View Details
« Back to All Add-ons
PLL-3600282 - PrimaLuceLab Adapter from M81 to T2 with Stop Ring for ESATTO 3"
About This Product
Adapter from M81 to T2 with stop ring for the PrimaLuceLab ESATTO 3" allows you to connect any camera or accessory with T2 (M42x0.75) female thread. Just thread this adapter to the M81 thread of the ESATTO 3" draw tube. Thanks to the T2 stop ring for ESATTO 3" you can also fix the camera at a precise angle in order to better frame your camera sensor at the desired object.
PLL-3600288 - PrimaLuceLab Adapter ESATTO 3" for SkyWatcher ESPRIT 100 ED
PLL-3600288 - PrimaLuceLab Adapter ESATTO 3" for SkyWatcher ESPRIT 100 ED
$255.00
Qty:
View Details
« Back to All Add-ons
PLL-3600288 - PrimaLuceLab Adapter ESATTO 3" for SkyWatcher ESPRIT 100 ED
About This Product
PrimaLuceLab ESATTO 3" adapter for SkyWatcher ESPRIT 100 ED.
PLL-3600289 - PrimaLuceLab Adapter from M81 to M68 Female for ESATTO 3"
PLL-3600289 - PrimaLuceLab Adapter from M81 to M68 Female for ESATTO 3"
$87.00
Qty:
View Details
PLL-3600292 - PrimaLuceLab Adapter ESATTO 3" for Meade 16 inches with 4" Thread
PLL-3600292 - PrimaLuceLab Adapter ESATTO 3" for Meade 16 inches with 4" Thread
$295.00
Qty:
View Details
« Back to All Add-ons
PLL-3600292 - PrimaLuceLab Adapter ESATTO 3" for Meade 16 inches with 4" Thread
About This Product
Adapter ESATTO 3" for Meade 16 inches with 4” thread allows you to connect ESATTO 3" to Meade LX200 SCT, LX200 GPS, LX200-ACF, LX600-ACF, LX800-ACF, LX850-ACF 16 inches telescopes or to all the telescopes that have 4-inch male thread.
PLL-3600296 - PrimaLuceLab Adapter ESATTO 3" for Takahashi TSA 120
PLL-3600296 - PrimaLuceLab Adapter ESATTO 3" for Takahashi TSA 120
$295.00
Qty:
View Details
« Back to All Add-ons
PLL-3600296 - PrimaLuceLab Adapter ESATTO 3" for Takahashi TSA 120
About This Product
This adapter allows you to connect the PrimaLuceLab ESATTO 3" to the Takahashi T 120 telescope. By adding the optional camera adapters with stop ring you can also connect your Takahashi accessories. Based on the camera and accessories train you want to connect, you may need extenders to reach the focus with your camera.
PLL-3600350 - PrimaLuceLab Adapter from M81 to M65 with Stop Ring for ESATTO 3"
PLL-3600350 - PrimaLuceLab Adapter from M81 to M65 with Stop Ring for ESATTO 3"
$150.00
Qty:
View Details
« Back to All Add-ons
PLL-3600350 - PrimaLuceLab Adapter from M81 to M65 with Stop Ring for ESATTO 3"
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.
QTY:  
Price as Configured: $945.00

Product Help
Need help deciding?
Tell us what you're looking for, and we’ll point you in the right direction. .
ESATTO 3” robotic focuser - main features:
  • Crayford style focuser with 28 ball bearings, specially designed for very high load capacity (up to 8 kgs) with no flexure.
  • Low profile design with only 58mm thickness (77mm with internal flange).
  • 25mm 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, 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!
  • Many camera threaded adapters with stop ring on the camera side to rotate and keep the camera in the optical axis.
  • Weight: 1345 gr.
Large diameter for more free aperture and weight load capacity
Compared to the 2" model, ESATTO 3" offers a greater free aperture (76mm against 51mm of ESATTO 2") so it is perfect for astrophotography with telescopes such as large apochromatic refractors, Ritchey-Chretien or Cassegrain and heavy cameras with accessories like off-axis guiders, filter wheels and adaptive optics. The large free aperture also allows the use of special focal reducers or correctors. A special design with 28 bearings allows to increase the load capacity to 8 kg.



ESATTO 3" has all the advanced features included in the ESATTO focusers: connection to Windows control computer (or EAGLE) with a robust USB-C port (you can connect ESATTO to any USB port thanks to the cable included in the package), control and setting software with ASCOM driver to use also with any astrophotography software (tested with Windows 10 computers), remote control via WiFi using the dedicated ESATTO Virtual HandPad app (to control it even without a computer).

Many adapters available to connect to many telescopes and camera
A perfect focuser is nothing without a solid connection to the camera. That's why, instead of using a normal 2" visual back, ESATTO 3" offers a M81x1 male thread 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!