Starlight Instruments 3.5" Adapter for William Optics FLT132, APM 130, and TS Photoline F7 Telescopes

Yes, this adapter is specifically designed for the William Optics FLT132. When paired with a 3.5" Feather Touch focuser, its solid aluminum construction creates a rigid connection capable of supporting heavy imaging trains without flexure, which is critical for maintaining sharp focus during long exposures.

Yes, this is the correct custom tube adapter to mount a Starlight Instruments 3.5" Feather Touch focuser onto a TS Photoline f/7 telescope. It ensures proper spacing and a secure, threaded attachment to the optical tube.

This adapter is machined from high-quality aluminum. It is manufactured and finished entirely in Starlight Instruments' US-based shop to ensure maximum quality control, rigidity, and a perfect fit.

Telescopes have unique rear cell thread patterns and dimensions. This custom adapter is machined to precisely match the APM 130's tube, providing a secure, perfectly aligned foundation for the focuser. A generic adapter would likely fail to provide the necessary stability and could introduce tilt into your optical path.

No. This adapter is designed to thread directly onto your telescope's optical tube assembly after you remove the stock focuser. The process is reversible and does not require any permanent modifications to your instrument.

The adapter ensures a secure connection through two key features:

• Precision Threads: Machined to exact tolerances for both the telescope tube and the focuser body, eliminating any play.
• Solid Construction: Being milled from a single block of aluminum prevents any flexure or sag, even with a heavy payload.