Skip to content
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" Adapter for The TMB92SS-Lightweight Telescopes
Starlight Instruments 2.5" Adapter for The TMB92SS-Lightweight Telescopes
Starlight Instruments 2.5" Adapter for The TMB92SS-Lightweight Telescopes

Starlight Instruments 2.5" Adapter for The TMB92SS-Lightweight Telescopes

by Starlight Instruments
SKU SI-A25-2003-11
$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00
Price Match Policy!
  • Connects a 2.5" Feather Touch focuser to a TMB92SS-Lightweight telescope
  • Precision-machined for a secure, no-flexure fit
  • Ensures perfect optical alignment for imaging and visual use
  • Manufactured by Starlight Instruments in the USA
Backordered
Request Stock Alert
Availability Info
Qualifies for FREE Shipping in CONUS on orders over $350.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Starlight Instruments 2.5" Adapter for The TMB92SS-Lightweight Telescopes

    This Starlight Instruments adapter provides the dedicated, precision-machined interface required to mount a 2.5" Feather Touch focuser onto the TMB92SS-Lightweight refractor. It replaces the stock focuser mounting flange, creating a solid, direct-threaded connection that eliminates the potential for tilt or flexure under the load of a heavy imaging camera or eyepiece.

    Seamless 2.5" Focuser Integration for the TMB92SS-Lightweight

    Upgrading your telescope's focuser is one of the most significant improvements you can make for astrophotography. This adapter is the critical component that makes a Feather Touch upgrade possible for the TMB92SS-Lightweight. Machined from high-grade aluminum and anodized for durability, it ensures your focuser is perfectly orthogonal to the optical axis, preserving the performance of your telescope's optics.

  • What is the purpose of this Starlight Instruments 2.5" adapter for the TMB92SS?

    This adapter is specifically designed to connect a Starlight Instruments 2.5" Feather Touch focuser to the optical tube of a TMB92SS-Lightweight telescope. It provides a secure, rigid mechanical interface between the telescope and the upgraded focuser.

    Which focusers are compatible with this TMB92SS adapter?

    This adapter is exclusively for use with Starlight Instruments' 2.5-inch Feather Touch focusers (such as the FTF25xx series). It is not compatible with 2-inch, 3-inch, or other brands of focusers.

    Is this adapter necessary to upgrade the focuser on my TMB92SS-Lightweight?

    Yes. The TMB92SS-Lightweight's tube has a specific bolt pattern and thread that is not native to the Feather Touch focuser body. This adapter bridges that gap, making the upgrade a simple bolt-on process.

    How does this adapter ensure a stable connection for astrophotography with a TMB92SS?

    By creating a direct, metal-on-metal threaded connection, the adapter eliminates any potential for sag, tilt, or flexure that could be introduced by a less precise, generic mounting solution. This rigidity is critical for maintaining sharp focus across the entire imaging field, especially with heavy cameras, filter wheels, and off-axis guiders.

    If I'm imaging the Andromeda Galaxy (M31) with my TMB92SS, why is this adapter critical?

    For a wide-field target like the Andromeda Galaxy (M31), maintaining a flat, evenly focused field from edge to edge is essential. Any tilt in the focuser would result in elongated stars in the corners of your image. This telescope-specific adapter ensures the focuser and camera sensor are held perfectly perpendicular to the light path, preserving the pinpoint star quality your TMB92SS optics are designed to deliver.

    Does this adapter allow the Feather Touch focuser to rotate on the TMB92SS?

    Yes, the design of the Feather Touch focuser system allows for rotation. The focuser body rotates within the tube adapter, enabling you to frame your target at any angle without loosening the connection to the telescope tube itself. This adapter facilitates that function for the TMB92SS-Lightweight.

  • Telescope Compatibility TMB92SS-Lightweight
    Focuser Compatibility Starlight Instruments 2.5" Feather Touch Focusers
    Material Anodized Aluminum

    • 2.5" Adapter for TMB92SS-Lightweight Telescopes

      × 1

  • Starlight Instruments 2-Year Warranty