Skip to content

Starlight Instruments 2.0" Adapter Rack Pinion for Lunt Telescopes

by Starlight Instruments
SKU SI-A20-3003-11
CA$182.00 - CA$182.00
CA$182.00
CA$182.00 - CA$182.00
CA$182.00
Price Match Policy!
  • Purpose-Built for Lunt: Designed specifically to mate a Starlight Instruments 2.0" rack and pinion focuser to a Lunt telescope tube.
  • Zero-Flexure Connection: Machined for a precise, rigid fit that prevents focuser tilt and image shift under load.
  • Starlight Instruments Quality: Manufactured in the USA to the same high standards as Feather Touch focusers.
  • Enables Focuser Upgrade: The essential component for replacing a stock focuser with a high-precision, dual-speed Starlight model.
Backordered
Request Stock Alert
Availability Info
Qualifies for FREE Shipping in Canada on orders over $500.
  • Description
  • FAQ
  • Warranty

  • Starlight Instruments 2.0" Adapter Rack Pinion for Lunt Telescopes

    This Starlight Instruments tube adapter creates the critical mechanical link for upgrading your Lunt solar telescope with a two-inch Feather Touch rack and pinion focuser. It ensures a rigid, perfectly aligned connection, eliminating the flexure and image shift that can compromise high-resolution solar imaging and visual observation. Machined by Starlight Instruments in the USA, this adapter guarantees a perfect fit between these two premium components, allowing you to bring the legendary precision of a Feather Touch focuser to your solar setup.

    A Solid Mechanical Interface for Lunt Solar Telescopes

    Upgrading to a Starlight Instruments focuser requires a mechanically perfect interface, and this adapter delivers exactly that. It is engineered to provide a non-flexing, secure attachment point for a two-inch rack and pinion Feather Touch focuser on a Lunt telescope. This rigidity is crucial for maintaining focus and optical alignment, especially when using heavier cameras or binoviewers for detailed views of solar prominences and surface granulation.

  • What is the purpose of the Starlight Instruments 2.0" Adapter for Lunt Telescopes?

    This adapter is a custom-machined component that allows you to securely mount a Starlight Instruments 2.0" rack and pinion Feather Touch focuser onto a Lunt solar telescope. It provides the necessary mechanical connection between the telescope tube and the focuser body.

    Which Starlight Instruments focuser is this adapter designed for?

    This tube adapter is specifically designed for the Starlight Instruments 2.0" rack and pinion (RP) series of Feather Touch focusers. It is not intended for use with their Crayford-style focusers or models of a different size.

    Why should I upgrade the focuser on my Lunt solar telescope with this adapter?

    Using this adapter to install a Feather Touch focuser provides a significant upgrade in focusing precision. The dual-speed control and zero-backlash mechanism of a Starlight focuser allow for extremely fine adjustments, which are critical for achieving the sharpest possible views of delicate solar features like spicules and filaments.

    Will this adapter introduce any flexure into my imaging train when using it on my Lunt telescope for H-alpha imaging?

    No, this adapter is designed to prevent flexure. It is machined from solid metal by Starlight Instruments to create a rigid, stable connection between the telescope and the heavy-duty rack and pinion focuser. This ensures your camera remains perfectly orthogonal to the optical axis, which is essential for high-resolution solar imaging.

    Is this adapter compatible with Starlight Instruments' Crayford focusers?

    This specific adapter is designed for the rack and pinion models. Starlight Instruments makes different adapters for their various focuser types. You must use the correct adapter for your specific focuser model to ensure a proper and secure fit.

    How does this Starlight Instruments adapter improve solar viewing on a Lunt telescope compared to a stock setup?

    By enabling the installation of a Feather Touch focuser, this adapter is the first step to eliminating image shift and improving focusing accuracy. When you make fine adjustments on a premium focuser, the image snaps into focus without wobble or drift, allowing you to more easily and consistently see the finest details on the Sun's surface and chromosphere.

  • Starlight Instruments 2-Year Warranty