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To those list members who are interested in the practical accuracy
of the Lunar Distance Method:

I just posted comparison graphs of the error distribution
in the two publications of 1889 (Bolte and White) as well
as my own data.
http://www.math.purdue.edu/~eremenko/accuracy.html
So we have hard data for the discussion of the accuracy
of the Lunar method represented in a clear way, I believe.

Some preliminary conclusions from these data are:
a) the method is less accurate at sea BY A FACTOR OF 3.
(Bolte is not the only source, he sites one other research on land
and one at sea, and they also confirm this conclusion).
b) even on land, even with averaging, you cannot achieve 0'2
accuracy RELIABLY. It is true that MOST observations are within
this limit, but the outlays of about 0'5 seem unavoidable,
even in the averages of series.

Alex.


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