Starlight Instruments Non-vignetting adapter to mount Feather Touch focuser on Celestron 11/14

This 2.1" tall by 3.5" diameter adapter has 3.25" diameter internal threads on one end that attach to the rear cell of 11" and 14" aperture Celestron catadioptric telescopes. Its special wide-mouth design eliminates vignetting during wide field visual observing with long focal length wide field 2" eyepieces and during astrophotography. The 3.25" to 2" rear cell step down ring on the scope that is normally used to hold 1.25" and 2" accessories must be unthreaded and removed to attach this adapter.

The opposite end has a 2.75" diameter opening that accepts the body of a 1.5" drawtube travel Feather Touch focuser having an optional internal braking system. The 0.8" travel Feather Touch may also be used, but generally won't have enough drawtube travel to accommodate the focus points of a wide variety of eyepieces. The 2" travel Feather Touch can be used, but will bottom out in the adapter after about 1.6" of travel.

Three recessed setscrews in the adapter fit into a groove in the Feather Touch focuser body to lock the focuser in place. Precision machined of aluminum and black anodized.