NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Latitude by Lunar Distance
From: Alexandre Eremenko
Date: 2006 Nov 12, 01:42 -0500
From: Alexandre Eremenko
Date: 2006 Nov 12, 01:42 -0500
Anyway, I call for the tests of the method, rather than the discussion of personalities and offenses which is going on now:-) Let us use the same criteria as were used for the Lunars method in XIII century. I will be surprised is the method permits to determine your position to 30 miles. > Well, I guess it all depends > on the meaning of that phrase "ordinary > sextant". By "ordinary sextant I meant of course a good one (but without a tripod or any other tricks which can work only on land:-) I should have said "well trained observer of reasonable ability". The arc corrections of a sextant are not very relevant here. A person who can measure distances to 0.1' reliably will have no difficulty in determining arc corrections of her sextant. > By the way, as I mentioned before in this topic, I'm a > big believer in averaging four sights > whenever you're trying to do lunars. And > this was considered normal practice historically. I am a "big believer" in the averaging as well. > It might be eyesight, but I'm betting > on technique (and that sticky > micrometer in your SNO-T sextant). My results are not better with your sextant. So it is not a micrometer problem. Alex. --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---