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    Re: Celestial Navigation without a sextant.
    From: Peter Fogg
    Date: 2008 Mar 8, 17:59 +1100

    40 South wrote:
    
    >   Also, assuming you had a compass and were north or south of the
    >  tropics, would it be possible to estimate your latitude by taking a
    >  bearing of the setting or rising of a celestial body?
    
    We're still at S40d 00'  E152d 00' (yes, the other side of the ditch).
     The azimuth of the sun at sunrise on 9 Mar 2008 is 096.3d.
    
    At S41d 00'  E152d 00' the azimuth of the sun at sunrise on 9 Mar 2008 is 096.4d
    
    So no, the bearing of a celestial body changes far too little with
    changes in latitude for this to be a useful indicator.  Especially
    given the relative inaccuracy of a magnetic compass, compensation
    needed for variation and deviation, and the difficulty of reading it
    accurately when at sea in a small boat.
    
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