A35-503-200—Adapter 3.5 for older ASTRO-PHYSICS 130mm Telescopes
Fits a 130mm Telescope with an Outside diameter of 6.25″ This adapter is unthreaded and is attached ot the OTA via set screws.
Use with focuser FTF3545B-A
Use with FTF3500 Focusers
Known To Fit 130MM Telescopes with 6.25″ O.D