The Baader Reducing Celestron Astrophysics Piece 3.3 Inch M681 to interface all parts of the Baader system specifically to thread suitable for direct association with an Edge HD additionally reasonable for Celestron-and astro Physics-reducers with add up to tallness of the connector 17mm (can be strung totally onto a 10mm long string, most Astro Physics reducers) Lens-sided 3.3" female string, eyepiece-sided of the edge.
Features
Optical tube length only 7mm, total height of the adapter 17mm
Connect the Baader M68 System Directly To a Celestron3" Thread