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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
PrimaLuceLab Adapter ESATTO 4" for Takahashi FSQ-106

PrimaLuceLab Adapter ESATTO 4" for Takahashi FSQ-106

by PrimaLuceLab
SKU PLL-PL3600310
$165.00 - $165.00
$165.00
$165.00 - $165.00
$165.00
Price Match Policy!
  • Installs the PrimaLuceLab ESATTO 4" focuser on a Takahashi FSQ-106 telescope
  • Engineered to match the original focuser's thickness to maintain focus point
  • Enables heavy-payload, large-aperture robotic focusing on the FSQ-106
  • Provides a secure, direct-fit mechanical connection
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • PrimaLuceLab Adapter ESATTO 4" for Takahashi FSQ-106

    This PrimaLuceLab Adapter for the ESATTO 4" allows you to replace the stock focuser on your Takahashi FSQ-106, unlocking the capabilities of a robotic focuser with a 102.2mm clear aperture and a 10 kg payload capacity. The adapter is precisely engineered to maintain the same optical thickness as the original Takahashi focuser, ensuring you can reach focus with your existing cameras and accessories without modification.

    Upgrade Your FSQ-106 with the ESATTO 4" Robotic Focuser

    The Takahashi FSQ-106 is a legendary astrograph, and this adapter allows you to pair it with a modern, observatory-grade robotic focuser. By installing the ESATTO 4", you gain a massive 102.2mm of clear aperture, eliminating any potential vignetting with full-frame sensors. The focuser's 10 kg payload capacity and 35mm of precise, repeatable draw tube travel let you automate focusing even with the heaviest imaging trains.

    Critical Compatibility: Designed for the FSQ-106 Only

    This adapter is designed exclusively for specific versions of the Takahashi FSQ-106 telescope. Its dimensions are calculated to perfectly replace the original focuser's optical thickness on that scope, allowing the full imaging train to come to focus correctly.

    • Confirmed Compatibility: Takahashi FSQ-106 (original models).
    • Known Incompatibility: This adapter will not work with Takahashi FSQ-106EDX III or FSQ-106EDX IV models. Use on an incompatible telescope will prevent you from reaching focus.

  • What is the purpose of the PrimaLuceLab Adapter for the ESATTO 4" and FSQ-106?

    This adapter provides the mechanical connection needed to remove the original factory focuser from a Takahashi FSQ-106 telescope and replace it with PrimaLuceLab's ESATTO 4" robotic focuser. It allows you to upgrade your telescope for automated, high-payload imaging.

    Will I be able to reach focus on my FSQ-106 after installing this adapter and the ESATTO 4"?

    Yes. The adapter is specifically designed to have the same optical thickness as the original focuser it replaces. This means that when the ESATTO 4" is installed using this adapter, your telescope's focal point remains in the correct position relative to the focuser drawtube.

    Can I use this adapter with my Takahashi FSQ-106EDX4 telescope?

    No. This adapter is not compatible with the Takahashi FSQ-106EDX 3 or FSQ-106EDX 4 models. You must use the adapter designed specifically for your telescope model to ensure proper fit and focus capability.

    Why would I replace the stock Takahashi FSQ-106 focuser with an ESATTO 4"?

    Upgrading to the ESATTO 4" provides several key advantages for astrophotography:

    • Robotic Control: Enables automated, repeatable focusing controlled by a computer.
    • High Payload: Supports up to 10 kg, easily handling heavy cameras, filter wheels, and off-axis guiders without flexure.
    • Large Aperture: The 102.2mm clear aperture prevents vignetting on large, full-frame camera sensors.

    Does this adapter add extra length to the FSQ-106 optical path?

    No. It is designed as a "zero-thickness" replacement. It occupies the same amount of space in the optical path as the flange of the original focuser, preserving your telescope's back focus.

    If I want to add an ARCO 3" rotator to my FSQ-106 imaging train, is this the right adapter?

    This adapter connects the ESATTO 4" focuser to the FSQ-106 telescope tube. To add an ARCO 3" rotator, you will need an additional adapter that connects the ARCO 3" to the drawtube of the ESATTO 4" focuser, not this one.

  • PrimaLuceLab 1-Year Warranty