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    Re: The Noon Fix
    From: James N Wilson
    Date: 2009 Apr 9, 15:37 -0700
    George:
     
    You asked:
     
    But you didn't answer my question about the sextant correction, and how you
    could know, in advance, what it was going to need resetting to, before the
    time interval was known. That's still puzzling me.
    Your puzzlement is gradually seeping in. I noted that I calculated Dh at the time of maximum altitude for simplicity, implicitly assuming that the slope of the adjusted line was the same as the original. If I were to also calculate it at a time prior to LAN, then I could establish the true slope of the adjusted line. With that defined, the exact time of LAN could be determined posthumously.
     
    I hope this clears it all up.
     
    Jim Wilson

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