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Starlight Instruments 2.0" Adapter for Celestron C11/ C14 SCT Telescopes

Starlight Instruments 2.0" Adapter for Celestron C11/ C14 SCT Telescopes

by Starlight Instruments
SKU SI-A20-212
CA$140.00 - CA$140.00
CA$140.00
CA$140.00 - CA$140.00
CA$140.00
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  • Connects 2.0" Feather Touch Focusers to Select Celestron SCTs
  • Threads onto the 3.29-16 Large Visual Back
  • Compatible with C11, C14, CPC1100, and C14HD Models
  • Provides a Rigid, Zero-Flexure Mounting Platform for Imaging
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  • Description
  • FAQ
  • Warranty

  • Starlight Instruments 2.0" Adapter for Celestron C11/ C14 SCT Telescopes

    The Starlight Instruments 2.0" Adapter for Celestron C11/C14 SCT Telescopes provides the essential threaded connection for upgrading to a high-precision Feather Touch focuser. It attaches directly to the large 3.29-16 visual back thread found on these larger SCTs, creating a rigid, non-flexing platform for your imaging train and eliminating the potential for tilt or sag.

    Mount a 2.0" Feather Touch Focuser on Your C11/C14 SCT

    This adapter is the critical first step in replacing your telescope's stock focuser or visual back with a Starlight Instruments 2.0" Feather Touch focuser. By threading directly onto the telescope's rear cell, it creates a solid metal-on-metal connection that is essential for astrophotography with heavy cameras, filter wheels, and other accessories. This secure mounting prevents the image shift and flexure that can plague standard slip-fit or compression-ring visual backs.

    The 3.29-16 Large-Thread Standard for Celestron SCTs

    Designed specifically for larger Celestron Schmidt-Cassegrain telescopes, this adapter fits the 3.29-inch, 16-TPI rear cell thread. This "large thread" is standard on specific models, ensuring a perfect fit and proper seating for your new focuser.

    • Confirmed Compatibility: Celestron C11, C14, CPC1100, C14HD, and NextStar 11.
    • Installation: Simply unthread your existing visual back and screw on the Starlight Instruments adapter to prepare the telescope for a 2.0" Feather Touch focuser.

  • What is the purpose of the Starlight Instruments 2.0" Adapter for C11/C14 scopes?

    This adapter allows you to securely mount a high-precision 2.0" Starlight Instruments Feather Touch focuser onto the rear cell of a large Celestron C11 or C14 telescope. It replaces the standard visual back with a solid, threaded connection essential for serious astrophotography.

    I have a Celestron CPC1100 and want to install a Feather Touch focuser for imaging planets. Is this the right adapter?

    Yes, this is the correct adapter. The Celestron CPC1100 uses the same large 3.29-16 thread as the C11 and C14 optical tubes. This adapter will provide the rigid, zero-flexure platform you need for high-magnification planetary imaging.

    How does this Starlight Instruments adapter attach to my C14HD?

    The adapter threads directly onto the 3.29-16 "large thread" rear cell of your C14HD telescope. You simply unscrew the stock visual back that came with your telescope and screw this adapter in its place. Your 2.0" Feather Touch focuser then mounts to this adapter.

    Why should I use this threaded adapter instead of a standard 2" visual back on my NextStar 11?

    A standard visual back often uses a simple compression ring or set screws, which can allow for tiny amounts of tilt or sag, especially with a heavy imaging camera. This threaded Starlight Instruments adapter creates a single, solid unit with the telescope tube and focuser, eliminating a major source of mechanical flexure and ensuring your optical train remains perfectly aligned.

    Which Starlight Instruments focusers are compatible with this C11/C14 adapter?

    This adapter is designed to be the mounting base for any Starlight Instruments 2.0" focuser, including both the Crayford (FTF20xx series) and Rack and Pinion (FTF20xx-RP series) models. It provides the necessary connection between the telescope tube and the focuser body.

    Will this adapter work on my Celestron C8 or C9.25 SCT?

    No. This adapter is specifically for the large 3.29-16 thread found only on the C11, C14, and related models. Celestron C8 and C9.25 telescopes use a smaller, standard 2"-24 SCT thread, and require a different adapter (part # A20-222).

  • Starlight Instruments 2-Year Warranty