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Brad Morris wrote:
> Think of it this way, IF you can accomplish it, then you will noted
> historically as the first person with a real extension of the lunar
> distance problem in 100 years!!!  That would be quite the feather in your
> cap.

Strictly with regard to navigation by lunar distances, I believe you're
right. Nobody (a dangerous word) has yet accounted for the limb profile.
But in practice is there anything worthwhile to be gained, given the
accuracy of sextant observations? I doubt it.

But if that little correction is to be pursued, I suggest looking at the
software of the occultation people. The limb profile is routine business
to them.

http://www.lunar-occultations.com/iota/iotandx.htm
http://www.lunar-occultations.com/iota/occvalue.htm

I have no plans to add that to my software! Although I am highly
interested in the discrepancy discussed in this thread, it's not because
17 mas is significant in navigation by lunar distances. The reasons are
1) some of my code may be re-used in another application where such an
error is not acceptable, and 2) just because the discrepancy is only 17
mas in this case, it doesn't follow that it will be that small in other
cases, and 3) I'm can't rest easy with a possible mistake in my code.

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