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Starlight Instruments 3.0" Adapter for Takahashi FS102/TSA102

Starlight Instruments 3.0" Adapter for Takahashi FS102/TSA102

by Starlight Instruments
SKU SI-A30-1903-4
CA$350.00 - CA$350.00
CA$350.00
CA$350.00 - CA$350.00
CA$350.00
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  • Adapts 3.0" Feather Touch Focusers
  • Fits Takahashi FS102 & TSA102 Refractors
  • Connects via M114x1 Male Threads
  • Precision-Machined for a Solid, No-Flex Connection
  • Enables Heavy-Duty Imaging Focuser Upgrades
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Starlight Instruments 3.0" Adapter for Takahashi FS102/TSA102

    This Starlight Instruments adapter provides the M114x1 threaded connection required to mount a premium 3.0" Feather Touch focuser onto your Takahashi FS102 or TSA102 refractor. It also enables this critical upgrade for a range of other telescopes, including the William Optics Megrez 110, Sharpstar AL 106, and Astro Tech 106LE, replacing the stock focuser with a zero-image-shift solution for serious imaging.

    Upgrade Your Takahashi FS102/TSA102 with a 3.0" Feather Touch Focuser

    The stock focusers on many excellent refractors are a known weak point for astrophotography. This adapter allows you to replace the original unit with a Starlight Instruments 3.0" Feather Touch focuser, providing the rigidity and fine control needed to handle heavy cameras, filter wheels, and off-axis guiders without flexure or image shift. The direct M114x1 threaded connection ensures a perfectly square and secure optical train.

    M114x1 Threads: Broad Compatibility Beyond Takahashi

    While designed for the Takahashi FS102 and TSA102, the M114x1 thread on this adapter makes it compatible with several other popular refractors. This allows you to bring the legendary stability and precision of a Feather Touch focuser to a variety of instruments.

    • William Optics: Megrez 110, Zenith Star 105 & 110MM
    • Astro Tech: 106LE
    • Sharpstar: AL 106
    • Astro Tech 111: Fits models manufactured after June 1, 2010 only.

  • Will this adapter fit my Takahashi TSA102 for a 3.0" Feather Touch focuser upgrade?

    Yes, this adapter is specifically designed for the Takahashi TSA102 and FS102 refractors. It provides the correct M114x1 thread to securely attach a Starlight Instruments 3.0" Feather Touch focuser.

    What is the thread specification on this Starlight Instruments adapter?

    The adapter features M114x1 male threads on the side that connects to the telescope's optical tube assembly.

    I have a William Optics Megrez 110. Is this the correct adapter for a 3.0" Starlight Instruments focuser?

    Yes, this adapter is also confirmed to fit the William Optics Megrez 110, as well as the Zenith Star 105 and 110MM models, allowing you to upgrade to a 3.0" Feather Touch focuser.

    Why do I need a specific adapter for my Takahashi refractor?

    A dedicated, threaded adapter ensures a rigid, perfectly aligned connection between the focuser and the optical tube. This prevents tilt and flexure, which is critical for astrophotography with heavy imaging systems. Generic or slip-fit adapters cannot provide the same level of stability.

    Does this adapter work with any 3.0" focuser, or only Starlight Instruments models?

    This adapter is designed specifically for the mounting pattern and body of Starlight Instruments 3.0" Feather Touch focusers. It is not guaranteed to be compatible with focusers from other manufacturers.

    How do I know if this adapter will fit my Astro Tech 111 telescope?

    This adapter will only fit Astro Tech 111 models that were manufactured after June 1, 2010. If your telescope is older than this date, you will require a different adapter.

  • Focuser Compatibility Starlight Instruments 3.0" Feather Touch Focusers
    Telescope-Side Thread M114x1 Male
    Primary Telescope Fit Takahashi FS102, TSA102
    Additional Compatibility William Optics Megrez 110, Zenith Star 105/110MM; Astro Tech 106LE, 111 (post 06/01/2010); Sharpstar AL 106

    • 3.0" Adapter for Takahashi FS102/TSA102

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  • Starlight Instruments 2-Year Warranty