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    Re: A noon sight conundrum
    From: Bill Arden
    Date: 2003 Nov 24, 12:01 EST
    Gee, why do we bother trying to take time measurements to the second when we're taking sights?  <g>
     
    Bill Arden
     
     
    In a message dated 11/24/2003 9:18:07 AM Central Standard Time, hprinz{at}ATTGLOBAL.NET writes:
    Peter Fogg wrote:

    > As best I understand it, he is saying that the
    > rate of change is smaller than the units we are using - ie, one tenth of a
    > minute of arc? Any chance of more detail about this?

    Yes, Peter, you understood the principle correctly. Except that the unit (=
    resolution of the azimuth table) is 0.1deg, not 0.1' as you say. The sun needs
    24s to move 0.1deg in LHA. The change in azimuth in the course of a whole day is
    on average the same. But it will usually be faster at noon and can be
    considerably slower (even zero) at other times.

    Herbert Prinz
       
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