Celestron "Universal" T-Adapter for 1.25" Focusers

This "universal" prime focus adapter drops into the 1.25" focusers of any reflector or refractor telescope using 1.25" visual accessories. It is used for terrestrial and lunar photography. The universal T-adapter is simply a 1.25" eyepiece holder with standard photographic T-threads at the top, essentially the Celestron #705T Barlow with T-adapter, but without the #705T's Barlow lens. The thumbscrew used to hold eyepieces in the #705T Barlow version is not used for photography with this adapter. Needs optional T-ring.

The adapter puts the film plane of a 35mm camera approximately 97mm (about 3.8") above the top of the focuser drawtube. Some refractors, and many reflectors, will not have enough focuser in-travel to reach photographic focus with a 35mm camera and this adapter due to this spacing. If there is any doubt as to whether your scope has enough focuser in-travel, use the #705T in place of this adapter. The #705T's Barlow lens will act like a transfer lens to move the scope's focal plane out far enough to overcome the 97mm spacing requirement.