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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 3.0" Adapter for William Optics FLT110 w/ TEC F6.5 Lens Telescopes

Starlight Instruments 3.0" Adapter for William Optics FLT110 w/ TEC F6.5 Lens Telescopes

by Starlight Instruments
SKU SI-A30-1903-6A
$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00
Price Match Policy!
  • Connects Starlight Instruments 3.0" focusers to specific telescope models
  • Designed for the William Optics FLT110 with TEC F6.5 Lens
  • Provides a secure, rigid, threaded connection
  • Ensures precise optical alignment for astrophotography
  • Machined from high-grade aluminum for durability
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  • Description
  • FAQ
  • Specifications
  • Warranty

  • Starlight Instruments 3.0" Adapter for William Optics FLT110 w/ TEC F6.5 Lens Telescopes

    This Starlight Instruments 3.0" Adapter provides the critical mechanical link required to mount a 3.0" Feather Touch focuser onto a William Optics FLT110 telescope equipped with the TEC F6.5 lens. It replaces the telescope's stock components to create a secure, direct-thread connection, eliminating the potential for flexure or tilt that can occur with generic adapters. This custom-machined part ensures your imaging train maintains perfect alignment from the focuser to the telescope optics.

    A Custom-Machined Fit for the William Optics FLT110

    Unlike universal adapters, this component is specifically engineered for the tube threads and optical spacing of the William Optics FLT110 with the TEC F6.5 lens. This precision fit guarantees that the Feather Touch focuser is perfectly centered on the optical axis, a non-negotiable requirement for serious astrophotography. By creating a solid, threaded connection, you can confidently attach heavy imaging trains without worrying about misalignment or sag as the telescope moves across the sky.

  • What is the purpose of this Starlight Instruments 3.0" adapter?

    This adapter is designed to allow you to upgrade the stock focuser on your William Optics FLT110 (with TEC F6.5 lens) to a high-precision Starlight Instruments 3.0" Feather Touch focuser. It provides the correct threads and spacing for a secure, rigid installation.

    Which focusers are compatible with this FLT110 adapter?

    This adapter is compatible with the Starlight Instruments family of 3.0" focusers, such as the FTF3015B-A, FTF3025B-A, and other models in the FTF30xx series. It ensures a direct fit to the telescope's optical tube.

    Is this adapter required to use a Feather Touch focuser on my William Optics FLT110?

    Yes. To ensure proper optical alignment and a secure mechanical connection without flexure, this custom-machined adapter is necessary. It bridges the specific thread pattern of the FLT110 optical tube to the standard mounting pattern of the 3.0" Feather Touch focuser.

    How do I install this adapter on my William Optics FLT110 telescope?

    Installation typically involves unthreading the stock focuser assembly from the rear of the optical tube. This adapter then threads directly onto the telescope tube, after which the 3.0" Feather Touch focuser is attached to the adapter. This creates a single, rigid imaging column.

    Will this adapter introduce any vignetting with a full-frame camera on my FLT110?

    No, this adapter is designed to maintain the full 3.0" clear aperture of the focuser it connects to. It will not act as a bottleneck or introduce any additional vignetting into the optical path, preserving the telescope's illuminated field.

    What material is the Starlight Instruments 3.0" adapter made from?

    Starlight Instruments machines its adapters from high-grade, anodized aluminum. This provides a strong, lightweight, and corrosion-resistant component that will hold heavy camera loads securely without shifting.

  • Compatibility William Optics FLT110 w/ TEC F6.5 Lens
    Focuser Size 3.0" Starlight Instruments Feather Touch
  • Starlight Instruments 2-Year Warranty