Baader Planetarium 20 mm NexStar Locking Ring - Black

Allows direct connection of Baader 2" Zenith Prisms and mirrors to Schmidt-Cass grain 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 bino viewers with the help of our 2" prisms and mirrors Baader Planetarium NexStar Locking Ring 20 MM