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Re: Has anyone made a Bris sextant - what kind of glass did you use?
From: Greg Rudzinski
Date: 2022 Feb 21, 13:12 -0800
From: Greg Rudzinski
Date: 2022 Feb 21, 13:12 -0800
Brian... I don't remember anything about laser calibration. Sorry. The way I calibrate is to use an artificial horizon (Davis) from a known GPS position and work back to an Hs altitude for each reflected sun image then confirm the next day with another set of observations using conventional sight reduction. Good observations should have intercepts of +/- 2' .
Greg Rudzinski
