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PrimaLuce Lab - OnAxisLock 50.8mm Visual Back for SC Telescopes

Woodland Hills Camera & Telescopes
5348 Topanga Canyon Boulevard
Woodland Hills, CA 91364
United States
888-427-8766 (Main Phone)
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The PrimaLuceLab OnAxisLock 50.8mm visual back for SC telescopes is directly screwed onto the back thread common in most Schmidt-Cassegrain telescopes (like the SC and EdgeHD by Celestron or Meade) and lets you use all the 50.8mm diameter accessories.

OnAxisLock is the accessories locking framework that, compared with the one using typical screw, offers a superior clamping force, avoiding any possible flexure (so it's ideal for astro-imaging), it doesn't harm the connected accessory and it perfectly centers the optical axis of the telescope. All credit goes to a new locking device with a double ring: just turn manually the appropriate external ring (designed to allow an easy grip, even with gloves) in order to obtain a perfect closure!

During use of heavy imaging instruments like DSLR or cooled CCD cameras (often with filter wheels), it's vital to avoid flexures when we insert them into the telescope's focuser. This is also crucial for visual use using large mirror diagonals and wide field eyepieces (which are often very heavy).

That is the reason PrimaLucelab designed the OnAxisLock adapter that replaces the classic screw with a locking ring mechanism. This permits you to perfectly bolt the inserted accessory by turning the external ring (red): a special double ring tightens internal accessories with an uniform pressure. The OnAxisLock device also allows you to keep perfectly aligned the accessories inserted in the focuser: so you will be sure that your camera's sensor will be perfectly centered with the optical axis of the telescope.
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