For astronomical use, you need a fast eyepiece change, without changing the orientation of the Diascope. We therefore provide the eyepiece adapter without a mounted sealing ring, so that the eyepieces can be switched easily. The bayonet has got an undercut, which serves to receive one of the two supplied O-rings. If you prefer a sealing ring, you can adjust the stiffness when switching eyepieces between tight (large O-ring) and light (small Oring) with these two different rings.
|BARREL SIZE (IN)
|INNER CONNECTION (EYEPIECE/-CAMERA-SIDED)
|OUTER CONNECTION (LENS SIDED)
|THREADED FOR FILTERS