
T2 adapter made by Kipon, which allows you to attach a Canon EOS M system camera to any T2 (T-Mount) mount.
Most commonly, this is used to attach a DSLR body to a telescope or stargazing scope, allowing the telescope to truly act as a reachable lens.
The T2 adapter is screwed onto the T2 thread of the optic/accessory. The camera body is attached to the other end of the adapter.