This adaptor fits the camera thread of all versions of the Hyperstar C9 and C11 from Starizona. On the other side, there is a T2 thread (M42x0.75) for connecting a camera.
The working distance from the adaptor to the camera sensor is 51 millimetres. This distance must be maintained. Example calculation: A cooled camera from ZWO has a flange focal distance of 17.5 millimetres. This means that the camera sensor is located 17.5 millimetres behind the housing with the T2 thread. If you use this adaptor, you will also need an extension tube or spacer rings with a total length of 33.5 millimetres ( = 51 mm - 17.5 mm).
