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    Re: Direct methods for finding position
    From: Herbert Prinz
    Date: 2002 Apr 15, 04:43 +0000

    Arthur,
    
    D = declination
    L = latitude
    T = local hour angle (t as in time)
    
    Sorry for forgetting to mention this. The formula is, in fact, the one for
    computed altitude as taught by the USPS or in the better books on
    navigation.
    
    A diagram for and full decription of the trigonometric method can be found
    in Cotter's History of Nautical Astronomy, and also (slightly mislabeled) in
    Susan P. Howell, Practical Celestial Navigation, 1987. The method of
    Kotlaric (see Bowditch 1972, 1984) is also partly based on it.
    
    I still owe you an answer re St. Hilaire. I was too busy during the weekend
    removing the mildew from my boat after this by-far-too-warm winter.
    
    Herbert
    
    
    

       
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