NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Re : The answer...
From: Joe Shields
Date: 1998 Sep 30, 12:22 EDT
From: Joe Shields
Date: 1998 Sep 30, 12:22 EDT
I think we are saying the same thing... Unless you are saying you can get a longitude fix without a precise time of the mid-point of the highest altitude of the sun. I am impressed with your celestial nav. experience. Can you describe your noon sight procedure? -- Joe ---Fabrice Magnan de Bornier <fmagnan@XXX.XXX> wrote: > > I don't get joe'spoint about noon sun shots. My understanding is that, as far as latitude is > concerned, the when is irrelevant, only the height matters and the slower it > changes the better your accuracy is. > > And although I know this is real heresy, I have crossed the Atlantic Ocean > from Newport to Saint Malo via the A?ores (or whatever you call these > islands in english) on a small yacht using only noon sun shots to determine > both latitude and longitude, and managed to land securely (the accuracy on > longitude was lousy, but still good enough to know when you have to be > careful). So I think the method is great and, yes, very simple (but maybe, in these GPS days, simplicity is not anymore the best reason for using astronomical navigation). > > Regards, > > > Fabrice Magnan de Bornier > Netincelle - 6 chemin de l'Or?e - 77920 Samois sur Seine - France > Tel : 01 64 24 67 93 > Fax : 01 64 24 82 80 > http://www.netincelle.com/ > <HR> <!DOCTYPE HTML PUBLIC "-//W3C//DTD W3 HTML//EN"> <HTML> <HEAD> <META content=text/html;charset=iso-8859-1 http-equiv=Content-Type> <META content='"MSHTML 4.72.3110.7"' name=GENERATOR> </HEAD> <BODY bgColor=#ffffff> <DIV>I don't get joe'spoint about noon sun shots. My understanding is that, as far as latitude isconcerned, the when is irrelevant, only the height matters and the slower itchanges the better your accuracy is.And although I know this is real heresy, I have crossed the Atlantic Oceanfrom Newport to Saint Malo via the A?ores (or whatever you call theseislands in english)? on a small yacht using only noon sun shots to determineboth latitude and longitude, and managed to land securely (the accuracy onlongitude was lousy, but still good enough to know when you have to becareful). So I think the method is great and, yes, very simple (but maybe, in these GPS days, simplicity is not anymore the best reason for using astronomical navigation).</DIV> <DIV>?</DIV> <DIV>Regards,</DIV> <DIV>?</DIV> <DIV><FONT color=#000000 size=2>Fabrice Magnan de BornierNetincelle - 6 chemin de l'Or?e - 77920?? Samois sur Seine - FranceTel : 01 64 24 67 93Fax : 01 64 24 82 80<A href="http://web.archive.org/web/20040422095153/http://www.netincelle.com/">http://www.netincelle.com/</FONT></DIV></BODY></HTML> _________________________________________________________ DO YOU YAHOO!? Get your free @XXX.XXX =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-= =-= TO UNSUBSCRIBE, send this message to majordomo@XXX.XXX: =-= =-= navigation =-= =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=
