A widefield camera adapter for all Schmidt-Cassegrain Celestron/Meade telescope tubes. Allows T-2 accessories to be used with an SCT thread. Telescope side UNC 2" (50.8mm) nut with internal thread. Focus side T-2 external thread. Optical path length 16mm.
Many H-Alpha imaging configurations suffer from Newton Rings or interference fringes caused by the flat optical surfaces in the imaging train. If the camera is set at an angle to the optical axis the interference pattens can be eliminated.