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Re: Star-to-star distance for sextant calibration?
From: Lars Bergman
Date: 2019 May 20, 13:41 -0700
From: Lars Bergman
Date: 2019 May 20, 13:41 -0700
Tony, you wrote "what should I do with those mystic columns - the (φ-D) and (φ+D)?"
When the star is vertically aligned below Polaris, then the altitude is close to (φ-D); when vertically above Polaris (φ+D). So my guess is that those columns are the corrections to use in these special cases, then you don't need to interpolate the correction between the tabulated altitude values.
Lars 59°N 18°E