Alpine Astronomical Baader 3.5" Quick Changing Ring

This Baader 3.5" Quick Changing Ring from Alpine Astronomical is a dovetail ring for the Baader 3.5" Quick Changer and Instrument Rotator for PlaneWave. Compatible with the 3.5" Hedrick Focuser, the Quick Changer and Instrument Rotator is used to connect, rotate, and change large cameras, spectrographs, or visual accessories with PlaneWave CDK 14-24" telescopes. The Quick Changing Ring is made from black anodized aluminum, has a dovetail on one side, and a bolt circle on the other for Securefit adapters, nosepiece extensions, or 2" or M68 adapters. Its optical length is 5mm.