PrimaLuceLab OnAxisLock Visual Back for SC Telescope

OnAxisLock 50,8mm visual back for SC telescopes is screwed directly onto the rear thread present in most of Schmidt-Cassegrain telescopes (like the SC and EdgeHD by Celestron or Meade ones) and lets you use all the 50.8mm diameter accessories.

OnAxisLock is the accessories locking system that, compared to the one using normal screw, offers a greater clamping force, avoiding any possible flexure (so it's perfect for astrophotography), it does not damage the connected accessory and it perfectly centers the optical axis of the telescope. All this thanks to a new locking device with double ring: just rotate manually the appropriate outer ring (designed to allow an easy grip, even with gloves) in order to obtain a perfect closure!