Baader 2" NexStar locking ring

llows direct connection of Baader 2" Zenith Prisms and mirrors to Schmidt-Cassegrain telescopes. For Celestron SCTs 8/9.25/11/14 with female 2" thread (5 mm optical length) For space-efficient connection of 2 "accessories to the large NexStar telescopes - just the 2" screw housing directly at the telescope. In this way you gain 20% field of view and you can connect for example binoviewers with the help of our 2" prisms and mirrors