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Subject: Re: Classification of the methods for clearing the Lunar Distances
From: George Huxtable (george@XXX.XXX)
Date: Mon Apr 07 2003 - 18:13:48 EDT
Thanks to Jan Kalivoda for a masterly summary of the various lunar-distance
correction methods, which I will print off and slip into my copy of Cotter.
He must have a superb library available in Prague, or else has done much
travelling to collect his information.
He ends by saying-
>Thank you for your corrections and supplements.
There's only one comes to my mind. Under "Short", or "approximate" methods,
he describes the lunar-distance triangle, and says-
> ....But the sections mM and sS are very short (half degree at most, but
>mostly shorter), which is essential for further procedures.
As I see it, the arc mM represents the (parallax - refraction) correction
for the Moon's altitude, and will normally be around one degree at low Moon
altitudes, not "half degree at most".
George Huxtable.
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contact George Huxtable by email at george@XXX.XXX by phone at
01865 820222 (from outside UK, +44 1865 820222), or by mail at 1 Sandy
Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
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