The adaptor from allows cameras, filter changers or off-axis-guiders with an M54x0.75 internal thread to be connected to focusers with an M63x1 internal thread. The adaptor prevents the bottleneck on M48 and thus improves the illumination with full-frame cameras.
The adaptor can be unscrewed, then you have an M63x1 external thread available as an intermediate thread. The adaptor therefore consists of two parts: Reversal adaptor with M63x1 external thread on both sides and stop edge Adaptor with M63x1 internal thread and M54x0.75 external thread.
Some filter wheels or filter drawers only have a short M54 internal thread. With a length of 6 mm, the external thread of the adaptor could block the function of the filter wheel. The thread can be shortened with M54 adjustment rings, which are simply placed over the external thread. The adjustment rings are linked in the accessories section.
TS Optics is a brand of Teleskop-Service.
