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Bill has found another David Burch/Starpath article of relevance, and
here is the link to it:
http://www.starpath.com/online/celestial/vic-maui-sights.pdf

Do I remember correctly, Bill, was this the article that turned into
quite a controversy in American sailing magazines, that raged for a
while?

The burning topic of that furore was metal sextants versus plastic
ones, but this article also has relevance to slope analysis: "... but
we can later do better by a careful slope analysis of the data."

Yep.

Its an article well worth a browse.  Here is another snippet:
"In short we did not do very well with these sights, but since they
are all Toward it implies there is definitely some systematic error
...".

It concludes:
"The results are not too bad for the conditions, poor horizon and
surfing in big seas".

In other words, out there in the real world.

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