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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 2.0" Adapter RP for Astro-Tech 65mm Telescopes

by Starlight Instruments
SKU SI-A20-3003-2
$130.00 - $130.00
$130.00
$130.00 - $130.00
$130.00
Price Match Policy!
  • Connects Starlight Instruments 2.0" Rack & Pinion focusers to Astro-Tech 65mm telescopes
  • Enables precision focusing for visual and astrophotography
  • Provides a secure, non-flexing mechanical interface
  • Machined by Starlight Instruments for a perfect fit
  • Replaces the stock focuser for a significant performance upgrade
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  • Description
  • FAQ
  • Downloads
  • Warranty

  • Starlight Instruments 2.0" Adapter RP for Astro-Tech 65mm Telescopes

    This Starlight Instruments 2.0" Adapter provides the critical mechanical link to upgrade your Astro-Tech 65mm refractor with a Feather Touch rack and pinion focuser. It is engineered to replace the telescope's original focuser, enabling you to install one of the industry's most precise and stable focusing systems. This upgrade eliminates the image shift and flexure common with stock focusers, creating a rigid imaging train for astrophotography.

    A Precision-Machined Connection for the Astro-Tech 65mm

    Designed specifically for the Astro-Tech 65mm optical tube, this adapter ensures a seamless and secure fit for a Starlight Instruments 2.0" rack and pinion focuser. By creating a solid connection, it allows the Feather Touch focuser to perform to its full potential, providing the ultra-smooth fine focus control and high load capacity needed for modern imaging cameras and heavy eyepiece setups. This is not a generic adapter; it is a purpose-built component for a specific telescope and focuser combination, guaranteeing correct spacing and alignment.

  • Which specific focuser does the Starlight Instruments Adapter for Astro-Tech 65mm fit?

    This adapter is designed exclusively for the Starlight Instruments 2.0-inch Feather Touch Rack & Pinion (RP) focusers. It will not work with their Crayford models or focusers from other manufacturers.

    Is this adapter compatible with the Astro-Tech AT65EDQ quadruplet refractor?

    Yes, this adapter is machined to provide a direct, secure fit onto the optical tube of the Astro-Tech 65mm ED Quadruplet (AT65EDQ) telescope, allowing you to replace the stock focuser with a Feather Touch model.

    Why should I upgrade the focuser on my Astro-Tech 65mm telescope?

    Upgrading to a Starlight Instruments Feather Touch focuser provides significant benefits for astrophotography. The rack and pinion design offers a much higher load capacity for heavy cameras and filter wheels, while the dual-speed fine focus mechanism allows for critical, repeatable focusing without image shift or backlash.

    Does the Starlight Instruments Adapter for Astro-Tech 65mm allow the focuser to rotate?

    The rotation capability is a feature of the Starlight Instruments focuser itself, not the adapter. When a rotatable Feather Touch focuser is installed using this adapter, you will retain the ability to rotate your camera and imaging train to frame your target correctly.

    What tools are required to install this adapter and a new focuser on my Astro-Tech 65mm?

    Installation typically requires a set of small hex keys (Allen wrenches) and possibly a small screwdriver to remove the stock focuser from the telescope tube. The Starlight Instruments focuser and this adapter will then attach using the same mounting points. Always refer to the focuser's manual for detailed instructions.

    Will this adapter improve my ability to image the Orion Nebula (M42) with an Astro-Tech 65mm?

    Yes, indirectly. While the adapter itself is a mechanical part, it enables the use of a Feather Touch focuser. This superior focuser allows for much finer focus adjustments, which is critical for achieving sharp stars across wide-field targets like the Orion Nebula (M42). It also provides a more rigid platform, preventing focuser sag that can ruin long exposures.

  • Starlight Instruments 2-Year Warranty