NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Latitude by Lunar Distance
From: Frank Reed CT
Date: 2006 Nov 10, 18:15 EST
--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to NavList@fer3.com
To , send email to NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---
From: Frank Reed CT
Date: 2006 Nov 10, 18:15 EST
Wolfgang you wrote:
"So the idea is not exactly original or new (94 years) and has
been
published in a peer-reviewed journal before, I am sorry to say."
published in a peer-reviewed journal before, I am sorry to say."
Call me confused, but why are you "sorry" to say that? It goes without
saying that everything in celestial navigation has been thought of before.
Probably ten times, too. But did YOU ever realize that you could determine a
true position fix using lunar distances without any horizon at all? I think it's
quite a novel concept for this group of people. I suppose that's why a couple of
people were determined to attack it instead of trying it out.
Out of curiosity, has anyone besides me tried it yet? Have you measured
some lunar distances assuming that GMT is known (as it is today, of
course)? Have you plotted out the resulting lines of position and
experienced the satisfaction of finding your position by
celestial navigation in an entirely new way? I dropped the topic in
October, but I would be happy to discuss it again.
I feel I should say this every time, just so there's no confusion: this use
of lunar distances to get a fix in latitude and longitude is
entirely different from the historical method of lunar distances which used the
measured distance to determine GMT. The measuring process, the required fine
adjustment of the sextant, and most aspects of the clearing process are the same
or very similar, but the final result is completely different.
-FER
42.0N 87.7W, or 41.4N 72.1W.
www.HistoricalAtlas.com/lunars
42.0N 87.7W, or 41.4N 72.1W.
www.HistoricalAtlas.com/lunars
--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to NavList@fer3.com
To , send email to NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---