T-mount adapter ring for SCT

This adapter enables you to attach the eShel FIGU, Alpy 600, LISA or UVEX instruments to a Schmidt-Cassegrain (Meade or Celestron) telescope (or any instrument with a 2″ thread).
On one side there is a T-mount male thread (M42x0,75mm), and on the other side a ring with a 2″ (50.8mm) female thread.
This adapter is also suitable for instruments used with the classical 0.63x focal reducer.