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polar scopes

Started by yahganlang, 10/14/2005 08:06AM
Posted 10/14/2005 08:06AM Opening Post
Hi folks. Have any of you ever seen (or heard of) a right-angled polar scope being used? Thanks.

Jess Tauber
Posted 10/14/2005 11:13AM #1
I'm not aware of any right-angle RA-axis borescopes for polar alignment, but I wouldn't be surprised if there were a few made (perhaps for high-end &/or custom equatorial mounts). RA bore diameter and borescope aperture would be key factors. A relay lens or group might also be advantageous (again, depending on mount and scope dimensions/parameters).

Vixen's 8x50 right-angle "Polaris" finderscope -- found on older Celestron Ultima SCTs and also available as an accessory -- included a polar alignment reticle and illuminator. I believe it's now extinct. There may have been a few other finderscopes which utilized polar-alignment reticles, as well, but I don't recall any.

Cheers & best wishes.
-Dan