A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Weems article in latest Air&Space Mag
From: Gary LaPook
Date: 2013 Jan 29, 20:48 -0800
|From which you compute the LHA of the sun which is a measure of local apparent time (LAT.)|
--- On Tue, 1/29/13, Gary LaPook <garylapook---.net> wrote:
From: Gary LaPook <garylapook---.net>
Subject: [NavList 22159] Re: Re: Re: Weems article in latest Air&Space Mag
Date: Tuesday, January 29, 2013, 8:44 PM
|The classic "time sight" preferably with the sun on the prime vertical.|
--- On Tue, 1/29/13, Paul Dolkas <paul---net> wrote:
From: Paul Dolkas <paul---net>
Subject: [NavList 22158] Re: Re: Weems article in latest Air&Space Mag
Date: Tuesday, January 29, 2013, 7:55 PM
I found the article fascinating – I never knew Lindbergh was an inventor! The watch is pretty clever, you gotta admit.*
Which brings up a (rather basic) question: In the instructions for how the watch was used to find one’s longitude, it talks about finding the local time via sextant. I know of two ways to do this: 1) a noon shot (which isn’t all that accurate, and can only be done once a day), and 2) a lunar. Isn’t there a way of finding local time
just using a sun shot? The only way I can think of involves a compass to find the sun’s azimuth.
*OK, I’m a watch guy.
From: NavList@fer3.com [mailto:NavList@fer3.com] On Behalf Of Dave Walden
Sent: Thursday, January 24, 2013 2:38 PM
Subject: [NavList 22100] Re: Weems article in latest Air&Space Mag
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