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    Re: Lat/Lon by "Noon Sun" & The Noon Fix PROVE IT
    From: Thomas Kleemann
    Date: 2009 Apr 16, 19:13 +0200

    George Huxtable schrieb:
    >  Can a skilled observer take timed
    > altitude readings as close as 1 minute intervals, though? Can he do so
    > without an assistant for noting times and recording results? If not, we
    > should be told, because it becomes a disadvantage in the procedure.
    Yes, he can.
    When I took series of observations to test if the precision of my Davies
    Mk15 decreases under hot sunny conditions, I preset the Sextant to small
    changes  in altitude and got observations spaced as close together as
    about 45 to 50 seconds.
    Although it is quicker to note this obs with the time only instead of
    time/altitude pairs, I understand it is the same with the timed obs at
    the decreasing slope (because one already noted the altitudes when they
    were increasing).
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