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    Re: Accuracy of sextant observations at sea
    From: Alan S
    Date: 2010 Nov 26, 14:54 -0800

    Date: 25 Nov 2010 17:44

    Re your request for data, please note the following:

    1. Shooting location, within a few yards, all shots listed.
    GPS Coord. Lat 34D 39.3Min North/Long 77D 03.6Min West,
    (Emerald Isle, North Carolina)

    2. Altair
    Date 23 October 2010
    UT 22:58:34
    Ho 64D 12.4M
    3. Fomalhaut
    Date 23 October 2010
    UT 23:23:17
    Ho 16D 13.3M
    4. Jupiter
    Date 23 October 2010
    UT 22:54:37
    Ho 24D 29.0M

    I used USPS SR 96a sight reduction form, USPS CLS 98 for plotting, and Daily Pages, 2010 Nautical Almanac. The above sights appear to be the best 3 body fix I shot. Distance from DR position (GPS Coordinates) to Fix measures inside 2 NM, looks like about 1.8NM, measuring with dividers. I can send more data if you like or desire.

    Interesting that you recall my having mentioned a metal sextant, Astra 111B.

    Hope you and yours had a happy thanksgiving holiday.


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