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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: ND1000 filter - a data point
From: Tony Oz
Date: 2022 Oct 31, 02:16 -0700
From: Tony Oz
Date: 2022 Oct 31, 02:16 -0700
Dear Bill,
Thank you for the link, the article is interesting.
I could not find there anything about my environment. What I did was zeroing the horizon and the object mirror on a bright star, then I rotated a polariser infront of the horizon mirror. I saw a separation of images as I turned the filter. When I returned it into initial position, - the coincidence restored. I'm sure this can only be explained by the wedgness not by beam-splitting or anythin else. As I've said, the separation reached a couple of arc-minutes, very noticeable amount.
Warm regards,
Tony
60°N 30°E
