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    Re: Latitude by Lunar Distance
    From: George Huxtable
    Date: 2006 Oct 15, 19:34 +0100

    Alex wrote-
    
    | Dear George,
    | I feel that my message on the Frank new
    | method has not reached the list,
    | or is posted in a wrong place of the list.
    | Frank's method is BASED on PARALLAX.
    | It indeed gives you two lines of position,
    | but requires very precise measurement,
    | and the resultilg position is 60 times less
    | accurate than the measurement itself.
    |
    | Alex.
    |
    | On Sat, 7 Oct 2006, George Huxtable wrote:
    |
    | > Peter Fogg has put his finger on the principle involved,
    | > without being
    | > aware of it.
    
    ====================
    
    Yes, indeed. Alex's message, dated 5 October, did indeed reach me, and
    I was fully aware of the valid points he had made then. Peter Fogg, on
    7 Oct, had failed to appreciate its contents, so I wrote to put him
    right, reinforcing what Alex had written earlier, and adding-
    "As Alex has pointed out, even at its best, it would be
    twice as inaccurate as determining a lunar longitude by lunar distance
    without GMT, and that's difficult enough."
    
    Many circumstances, in which Frank's proposed method might apply,
    (such as in downtown Chicago) could be resolved, far more accurately,
    by the simple use of a bowl of water. The water would provide an
    artificial horizon, and two altitudes of the Moon (when its altitude
    was below 60 degrees) at widely separated times would provide two
    precise position lines. Can Frank do better than that, I wonder?
    
    George.
    
    contact George Huxtable at george@huxtable.u-net.com
    or at +44 1865 820222 (from UK, 01865 820222)
    or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
    
    .
    
    
    
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