The 1.25" Universal Camera Adapter allows attachment of a camera body to reflector and refractor telescopes for either prime-focus or eyepiece-projection photography (hence the term "universal"). The adapter slides into the eyepiece holder as an eyepiece normally would.
This universal adapter is composed of two detachable parts: a prime-focus adapter (or "T-adapter") for prime-focus photography, and a fixed-length eyepiece-projection photography. A thumbscrew in the extension tube holds the telescope eyepiece in place. Since the Universal Camera Adapter features an inside diameter of 38.6mm, you can insert any 1.25" telescope eyepiece that has an outer housing diameter of 38.6mm or less.
This combination of prime-focus and eyepiece-projection camera adapter has a non-variable barrel design that allows a fixed projection distance for eyepiece-projection photography. Fits reflector and refractor telescopes with 1.25" telescope eyepiece holders.