Baader Hyperion SP54/SP54 Extension Ring
- Extension Ring with 11mm optical path length, with threaded protective flap for the SP54 external thread
- Required for the connection of the DT-rings SP54 / M28 and SP54 / M37
- The Hyperion DT-rings are optimised for the shortest distance between eyepiece lens and digital camera lens. Only in this way is a vignetting image illumination possible
- Two adjusting rings for SP54 thread are free with the purchase of each Hyperion DT-ring.