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    Re: Fix by equal altitude sights around local apparent noon
    From: George Huxtable
    Date: 2009 Oct 14, 08:36 +0100

    Thanks to Geoffrey Kolbe for clarifying use of the equiangular with the same 
    star, ascending through 60� altitude, then descending through 60� altitude.
    When it was being used in that way, for precise results, a choice of star 
    had to be made, presumably on the basis of its maximum altitude, which would 
    have to be greater than 60�. How much greater than 60�, then, was the 
    recommendation, which would determine the time-lapse between the two events, 
    and also affect the achievable precision?
    contact George Huxtable, at  george@hux.me.uk
    or at +44 1865 820222 (from UK, 01865 820222)
    or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK. 
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