NavList:

Hewitt, you wrote:
"Longitude by Noon Sight has often been a topic here. I even did a book on it."

And a fine little book it is, but I suspect that these sights Peter Cope is talking about were time sights. Getting a longitude from a noon Sun curve using sights "around" noon is really a modern method, and a navigator in 1845 would have probably not have been familiar with it.

You added:
"It sounds like you have the paper which derives the formula to compensate for the effect of vessel motion. Although I have heard of this article, I have never seen it. Would it be possible for you to send a copy of the article or the "workings" and their inputs?"

Hmm. Are you saying that you have never seen the vessel motion correction derived? If that's the case, I can post on that. I'm teaching my "Easy Introductory Celestial" class this weekend which is built on latitude at noon and longitude by sights around noon, including the correction for motion. I would be happy to discuss that.

-FER

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