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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 for Questar 7

by Starlight Instruments
SKU SI-A20-303
$200.00 - $200.00
$200.00
$200.00 - $200.00
$200.00
Price Match Policy!
  • Designed specifically for the Questar 7 telescope
  • Enables mounting of a 2.0" Starlight Instruments Feather Touch focuser
  • Features a 2.125″ extension to clear the stock focuser knob
  • Precision-machined for a secure, no-slip fit
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Starlight Instruments 2.0" Adapter for Questar 7

    The Starlight Instruments 2.0" Adapter for Questar 7 is the definitive component for upgrading the legendary telescope with a high-precision focuser, incorporating a 2.125″ extension to provide critical clearance over the instrument's original focus mechanism.

    A 2.125" Extension for a Seamless Feather Touch Upgrade

    Integrating a modern, external focuser onto the classic Questar 7 presents a unique mechanical challenge: the new focuser must clear the existing, side-mounted focus knob. This adapter is engineered specifically to solve that problem. Its integrated 2.125″ extension provides the exact standoff distance required to mount a 2.0" Feather Touch focuser without interference.

    Machined by Starlight Instruments, this adapter ensures that the optical axis remains perfectly aligned. It provides a rigid, stable platform for your Feather Touch focuser, allowing you to achieve the fine focus control needed for high-magnification planetary observation and critical imaging, transforming the focusing feel and capability of your Questar 7.

  • What is the purpose of the Starlight Instruments 2.0" Adapter for the Questar 7?

    This adapter allows you to attach a Starlight Instruments 2.0" Feather Touch focuser to a Questar 7 telescope. Its primary function is to provide a secure mechanical connection while also extending the focuser outward to clear the telescope's original focusing knob.

    Which Feather Touch focuser does this Questar 7 adapter work with?

    This adapter is specifically designed to be used with Starlight Instruments' 2.0" Feather Touch focusers. It will not work with their larger 2.5", 3.0", or 3.5" models.

    Why does the Questar 7 adapter include a 2.125" extension?

    The 2.125″ extension is a critical design feature. It provides the necessary space to mount the new Feather Touch focuser without it physically conflicting with the Questar 7's stock focusing knob, ensuring a clean and functional installation.

    Will this adapter let me use a Feather Touch focuser for imaging with my Questar 7?

    Yes. By enabling the use of a Feather Touch focuser, this adapter provides the precise, zero-image-shift focusing required for astrophotography. A Feather Touch focuser is a significant upgrade over the stock mechanism for any imaging application with your Questar 7.

    Is installing the Starlight Instruments adapter on my Questar 7 difficult?

    Installation is straightforward for users comfortable with telescope hardware, typically involving unthreading the visual back and attaching the adapter. However, given the high value of the Questar 7, we recommend consulting the focuser's installation guide or seeking assistance from an experienced technician if you are unsure.

    Can I achieve finer focus on Jupiter with my Questar 7 using this adapter?

    Absolutely. The combination of this adapter and a dual-speed Feather Touch focuser gives you the micro-focusing capability needed to resolve fine details like cloud bands on Jupiter or the Cassini Division in Saturn's rings at high magnification, which can be difficult with the stock focuser alone.

  • Telescope Compatibility Questar 7
    Focuser Compatibility Starlight Instruments 2.0" Feather Touch Models
    Extension Length 2.125″

    • 2.0" Adapter for Questar 7

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  • Starlight Instruments 2-Year Warranty