TS Optics 2-inch Filter Thread Extension Tube 20 mm Optical Path

TS-Optics M48 × 0.75 extension — 20 mm

This M48 × 0.75 extension adds a manufacturer-specified 20 mm effective length to a threaded optical train.

Threaded connection

It connects matching female and male M48 × 0.75 interfaces. The quoted spacing is the effective contribution when assembled; a protruding male thread is not an additional spacer once it is engaged.

Spacing application

Use it to build the required distance between a corrector and camera, allowing for the camera’s own flange distance and other adapters. It contains no focal reducer or field-flattening optics; changing physical spacing does not itself change the telescope’s native focal length.

Additional specifications