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    Re: On polar nav
    From: Robert Eno
    Date: 2002 Sep 11, 22:30 -0400

    I can answer the last question:
    
    Theodolites are heavy instruments to lug around on a trip to the pole. But
    most importantly, ever try to use one at -30 C?  It ain't fun, believe me. A
    sextant is much easier and simpler, to work with under extreme conditions
    and compared to a theodolite, a little more robust.
    
    I think, but am not entirely certain, that Scott took a theodolite with him.
    I could be dead wrong though.
    
    cheers,
    
    Robert Eno
    
    ----- Original Message -----
    From: Peter Fogg 
    To: 
    Sent: Wednesday, September 11, 2002 9:35 PM
    Subject: Re: On polar nav
    
    
    > Walter Guinon wrote:
    >
    > > Is the behavior of a pendulum a useful indication of nearness to the
    pole?
    > >
    >
    > Don't know, but among their lists of indispensable equipment to bring for
    > hanging around the pole I've come across no mention of pendulums. My
    > understanding of the method used was observations of the sun over a 24
    hour
    > period. After allowance for change of declination the altitude should
    remain
    > the same all around the horizon at the pole.
    > Another little mystery is why they used sextants rather than theodolites,
    > which would seem to be more useful for the purpose.
    >
    
    
    

       
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