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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.
Starlight Instruments 2.5" End Cap -Standard

Starlight Instruments 2.5" End Cap -Standard

by Starlight Instruments
SKU SI-EC25-2005-1
$150.00 - $150.00
$150.00
$150.00 - $150.00
$150.00
Price Match Policy!
  • Official replacement end cap for 2.5" Feather Touch focusers
  • Adapts the drawtube to accept standard 2" eyepieces and accessories
  • Features a non-marring brass compression ring
  • Dual thumbscrews for secure grip on heavy components
  • Machined from high-quality aluminum by Starlight Instruments
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  • Description
  • FAQ
  • In the Box
  • Downloads
  • Warranty

  • Starlight Instruments 2.5" End Cap - Standard

    The Starlight Instruments 2.5" Standard End Cap is the factory-original component for all Feather Touch 2.5" focusers, providing a secure, non-marring connection for your 2" eyepieces and accessories. Machined in-house from high-quality aluminum, it ensures your optical train maintains the same mechanical integrity and precision as the Feather Touch focuser itself.

    Factory-Original Fit and Finish for 2.5" Feather Touch Focusers

    This is the standard-issue end cap for the Starlight Instruments 2.5" Feather Touch focuser series. It allows you to use any 2" accessory, from a low-power eyepiece to a heavy camera nosepiece, with absolute confidence. The internal brass compression ring and dual thumbscrews grip your equipment firmly without scratching or marring the barrel.

    As a genuine Starlight Instruments part, this end cap is machined from the highest quality aluminum and finished in their shop to the same exacting standards as their world-renowned focusers. It's the correct choice for replacing a lost component or ensuring you have the standard visual adapter on hand for your 2.5" Feather Touch.

  • Which focusers does the Starlight Instruments 2.5" Standard End Cap fit?

    This end cap is designed to fit all Starlight Instruments 2.5" Feather Touch focusers (models in the FTF25xx series). It is the standard, factory-original part for these models.

    What is the purpose of the 2.5" Standard End Cap?

    Its purpose is to adapt the large 2.5" drawtube of the focuser down to the industry-standard 2" format. This allows you to use the vast majority of eyepieces, diagonals, and camera nosepieces on the market.

    I have a heavy 2" eyepiece. Will the 2.5" Standard End Cap hold it securely in my FTF2535HD focuser?

    Yes. The end cap uses a soft brass compression ring and two separate thumbscrews. This design provides a very secure, slip-free grip that is more than capable of holding heavy eyepieces, diagonals, or smaller cameras, even when the telescope is pointed near the zenith.

    What is the Starlight Instruments 2.5" Standard End Cap made of?

    It is machined from high-quality aluminum and features a brass compression ring on the interior. The entire part is manufactured and finished in Starlight Instruments' facility in the USA, ensuring it matches the quality of your focuser.

    Why would I use this Standard End Cap instead of a threaded adapter?

    This Standard End Cap with its compression ring is ideal for visual astronomy and applications where you frequently swap 2" barrel accessories. A threaded adapter provides a more rigid, permanent connection required for heavy, complex imaging trains where preventing any possibility of tilt is critical.

    Can I use the 2.5" Standard End Cap on my Takahashi or Tele Vue telescope's stock focuser?

    No. This end cap is specifically designed with the proprietary threading and dimensions to fit Starlight Instruments' own 2.5" Feather Touch focusers. It will not attach to focusers from other manufacturers.

    • 2.5" Standard End Cap

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  • Starlight Instruments 2-Year Warranty