The Flip Mirror Diagonal for 2-Inch Focusers by Vixen:
Are you ready for a whole new concept in viewing possibility? The Vixen Flip Mirror Diagonal attaches to your telescope via a 2-inch threaded barrel that accepts 48 mm filters. This diagonal has an enhanced aluminum coating for 96-percent transmission and incorporates the use of a flip mirror to change between its standard 90 degree 1.25-inch eyepiece port and the multi-purpose, straight through eyepiece/photography port.
The straight-through port on the Vixen Flip Mirror Diagonal not only accepts many photo adapters but it also can be unthreaded to reveal a standard 42 mm T-Ring thread.
OPT Product Number: VX-2680