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    Re: The Moon and the bubble sextant: how to correct properly?
    From: David Iwancio
    Date: 2022 Mar 15, 22:56 -0700

    Tony:

    The procedure looks right, and using the Air Almanac procedure as a sanity check I got a correction of +50', which is close enough.

    I'd guess the problem is either in your sextant, your clock or your GNSS fix.

    (Or squinting at the vernier scale.)

       
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