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    Re: John Karl's Celestial Navigation in the GPS Age
    From: Robert Bernecky
    Date: 2018 Apr 30, 06:48 -0700

    It would be helpful if you post the example you are working, and what step is not clear.

    FYI, you can download these tables from

    https://msi.nga.mil/NGAPortal/MSI.portal

    (select "publications" from their menu displayed on the left side, and then Sight Reduction Tables for Marine Navigation)

    You can also find Vols 2 and 3 of the Air Sight Reduction Tables.  Vol 1 of the Air Sight Reduction Tables is date dependent, and you can find them at

    http://astro.ukho.gov.uk/nao/publicat/ukaa_usage.html

    Of course, these days people probably use an app (if they do celestial at all).

       
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