Finder / guidescope mounting rings to mount on Celestron C8 type telescopes. Internal diameter of the rings is just over 90mm, with nylon tipped screws. Note the base is curved to fit the C8 optical tube. The rings are mounted to the bottom bracket with screws, so they could be removed and mounted to a different base, such as a Vixen saddle. Older, but never mounted or used. Made in Japan.
Filed under: Eyepieces & Accessories