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    Re: Rocky Mountain Lunar Distance
    From: George Huxtable
    Date: 2002 Dec 19, 07:12 +0000

    I said-
    
    >> And
    >> just making an ordinary linear interpolation for times within this 12-hour
    >> interval gives rise to a worst-case interpolation error of around 4
    >> arc-minutes in the Moon's declination. That is sufficiently accurate that a
    >> calculated altitude based on that dec. will not affect the accuracy of
    >> clearing the lunar distance.
    
    Bill Noyce replied-
    >
    >But hadn't you better use a better declination when actually figuring
    >the "computed distance" to which you then compare your cleared distance?
    >Not a problem for navigators in Maskelyne's day, when these computed
    >distances were tabulated at 3-hour intervals...
    
    
    And he's absolutely right. Thanks, Bill.
    
    George Huxtable
    
    
    ------------------------------
    
    george---.u-net.com
    George Huxtable, 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
    Tel. 01865 820222 or (int.) +44 1865 820222.
    ------------------------------
    
    
    

       
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