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PrimaLuceLab ESATTO 3.5" LP Robotic Focuser

PrimaLuceLab ESATTO 3.5" LP Robotic Focuser

by PrimaLuceLab
SKU PLL-PLLEST35LP
CA$1,673.00 - CA$1,673.00
CA$1,673.00
CA$1,673.00 - CA$1,673.00
CA$1,673.00
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  • Low-profile 32mm body for telescopes with limited backfocus
  • 10kg payload capacity supports heavy imaging trains
  • 0.01 micron step resolution
  • 3.5" drawtube with large 90mm free aperture
  • USB-C and WiFi for complete remote control
  • Dedicated ARCO port for rotator integration
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • PrimaLuceLab ESATTO 3.5" LP Robotic Focuser

    The PrimaLuceLab ESATTO 3.5" LP Robotic Focuser packs a 10kg payload capacity and a 3.5" drawtube into a body 32mm thick, for telescopes with little back focus such as many astrographs. Its 10mm of travel has a resolution of 0.01 microns per step. Weighing 1150g, this focuser provides an M98x1 female connection for your camera train and offers full remote control via USB-C or WiFi.

    A 32mm Low-Profile Body for Demanding Astrographs

    Telescopes such as many astrographs have little available back focus and need a low profile focuser. The ESATTO 3.5" LP fits 10mm of travel into a 32mm body.

    The draw tube has a 90.0mm free aperture.

    10kg Capacity with 0.01 Micron Step Resolution

    PrimaLuceLab's special low profile design gives the ESATTO 3.5" LP 10 kg (22 lb) of payload capacity with the focusing smoothness needed for autofocusing with V-curves. It is not a Crayford design (PrimaLuceLab reserves that for the 2", 3" and 4").

    The resolution is 0.01 microns per step.

    Secure M98x1 Thread and Optional Adapters

    The ESATTO 3.5" LP has an M98x1 female thread on the camera side; the draw tube travel moves on the telescope side.

    PrimaLuceLab offers optional camera adapters with stop ring (the stop ring locks the camera at a precise angle for framing) and telescope adapters; if none fits your telescope, the user manual gives the dimensions of the telescope-side adapter so you can make your own. Examples:

    • Camera side: M98 to M68 and M98 to M54 with stop ring, and M98 to M72 female.
    • Telescope side: adapters for the large 3.3" SC thread (PL3600362), telescopes with SC thread, GSO/Orion/TPO Ritchey-Chretien 10" to 16", PlaneWave DeltaRho 350 and Officina Stellare Veloce RH200 and RH300.
    • 3" Visual Back: For a camera with a 3" nosepiece; it has an internal brass compression ring and 3 locking screws at 120°.

    USB-C, WiFi, and Full Software Integration

    The USB-C port connects to a PrimaLuceLab EAGLE or any Windows computer, and the included cable fits any USB type port. For untethered use, built-in WiFi lets you control the focuser from a smartphone or tablet using the ESATTO Virtual HandPad, intended for visual use. The status LEDs are dimmable.

    It comes with PrimaLuceLab's PLAY astrophotography software, which controls focus with ESATTO and rotation with ARCO and adds more advanced features on an EAGLE. An ASCOM driver (tested with ASCOM platform 7) lets third-party software control it.

    Dual Temperature Sensors for Focus Stability

    Focus can shift as temperature changes. An internal sensor reads the motor temperature, and a port takes the optional external probe used for focus temperature compensation.

    With the probe connected, the ESATTO reports temperature with its position, and autofocus can be set to run after a temperature change.

    Dedicated Port for a Seamless Rotating Focuser

    The ESATTO 3.5" LP has an ARCO port. With the optional Adapter ESATTO 3,5" LP for ARCO 3" (PL3600467, 3mm optical thickness), the ARCO 3" mounts on the focuser.

    The ARCO connects to the ESATTO with a single cable, without additional USB or 12V power cables. The combination is a rotating focuser 58.5mm thick with a 76.3mm free aperture (set by the ARCO 3"). ARCO lets you set the camera angle remotely and, with an alt-az mount, de-rotate the field without an equatorial wedge.

    Flexible 12V/USB Power and Automatic Position Sensing

    The ESATTO 3.5" LP offers flexible power options to suit your setup. It can be powered via a standard 12V DC input using the included cigarette lighter plug cable, or through USB from an EAGLE or computer; if a computer's USB ports deliver less than 0.5A the focuser may stop abruptly, and 12V must be connected as well.

    Each unit leaves the factory calibrated; on the LP versions the calibration sensor detects the max in position. Calibration data is stored in the focuser's memory. Service or calibration of the 3.5" LP's internal mechanism (the registration procedure) should only be done by PrimaLuceLab.

  • What makes the PrimaLuceLab ESATTO 3.5" LP ideal for an astrograph?

    Astrographs often have very limited backfocus. The ESATTO 3.5" LP is 32mm thick, with a 10kg payload capacity and a 90mm free aperture.

    How can I control the ESATTO 3.5" LP focuser remotely?

    You have multiple options for controlling the ESATTO 3.5" LP:

    • USB-C: Connect it to an EAGLE computer or any Windows PC for control via ASCOM drivers or the included PLAY software.
    • WiFi: Use the built-in WiFi to connect to your smartphone or tablet and control focusing with the ESATTO Virtual HandPad app.
    • EAGLE Integration: An EAGLE can also control it wirelessly in GHOST mode instead of over a USB cable.

    Will the ESATTO 3.5" LP work with my Celestron EdgeHD 1100 telescope?

    Yes. PrimaLuceLab makes an optional adapter (PL3600362) specifically for telescopes with the large 3.3" SC thread, such as the Celestron SCT (11" and 14") and EdgeHD (9.25", 1100, and 1400) models. With its 2mm optical thickness and the 32mm focuser, 112mm of back focus remains for your camera and accessories.

    Can I power the ESATTO 3.5" LP with just the USB-C cable?

    Often yes. The manual says a computer USB port that delivers less than 0.5A can make the focuser stop abruptly; then also connect an external 12V power source with the included cable.

    What is the benefit of connecting the ARCO rotator to the ESATTO 3.5" LP?

    With the PL3600467 adapter and the ARCO 3", you get a rotating focuser 58.5mm thick. The ARCO connects to the ESATTO's ARCO port with a single cable, with no additional USB or 12V cables, and lets you set the camera angle remotely.

    Is the 10mm travel of the ESATTO 3.5" LP enough for focusing?

    The 10mm travel is the price of the 32mm body. Set your back focus with spacers or extensions so that focus falls within the travel; the ESATTO then handles the focusing.

    How does temperature compensation work on the ESATTO 3.5" LP?

    The focuser has an internal temperature sensor to monitor motor heat and a port for an optional external probe for focus temperature compensation. With the probe connected, the focuser reports temperature, and autofocus can be set to run after a temperature change.

    How do I attach my camera to the ESATTO 3.5" LP?

    The focuser has a standard M98x1 female thread on the camera side. You will need an optional adapter to match your specific camera or accessory. PrimaLuceLab offers M98 to M68 and M98 to M54 adapters with stop ring, an M98 to M72 female adapter and a 3" visual back.

    Do I need to calibrate the ESATTO 3.5" LP when I first get it?

    No. Every ESATTO is calibrated in PrimaLuceLab's factory (on LP versions the sensor detects the max in position), and the data is stored in the focuser's memory, so moving between computers needs no new calibration.

    Can I use the ESATTO 3.5" LP focuser for visual observing?

    Yes. By connecting to the focuser's WiFi network with a smartphone or tablet, you can use the Virtual HandPad to focus without touching the telescope; the 3" visual back takes accessories with a 3" nosepiece.

  • Optional Accessories Adapter from M98 to M68 with stop ring for ESATTO 3,5” LP; 3" visual back for ESATTO 3,5” LP
    Drawtube size 3.5"
    Travel 10mm
    Camera-side connection M98x1 Female
    Load capacity 10kg
    Length at minimum travel 32mm
    Interface / control USB-C, WiFi (PLAY, ASCOM, Virtual HandPad)
    Step resolution 0.01 microns per step
    Temperature sensor Internal motor sensor; external probe optional
    Weight 1150g

    • ESATTO robotic focuser

      × 1

    • 2mm Allen key

      × 1

    • 12V power cable for cigarette plug

      × 1

    • USB-C to USB cable

      × 1

    • ESATTO quick start guide

      × 1

  • PrimaLuceLab 1-Year Warranty