NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Emergency sun declination
From: Bill Noyce
Date: 2004 May 25, 08:50 -0400
From: Bill Noyce
Date: 2004 May 25, 08:50 -0400
It's a nice method, and a nice picture, but the dates are in the wrong
places. (Unfortunately, picking 45 degrees doesn't show the error.)
You want the solstices at top and bottom, and the equinoxes on the two
sides, so the declination is zero at each equinox...
-- Bill
-----Original Message-----
From: Navigation Mailing List
[mailto:NAVIGATION-L@LISTSERV.WEBKAHUNA.COM] On Behalf Of Jim Thompson
Sent: Monday, May 24, 2004 5:26 PM
To: NAVIGATION-L@LISTSERV.WEBKAHUNA.COM
Subject: Re: Emergency sun declination
Here's the graphical explanation that someone asked for:
http://jimthompson.net/boating/CelestialNav/SunDeclination.htm
We spent a great long weekend on the boat, our first of the season. I
got this done over warm coffee early in the morning, before the family
got up and going.
Jim Thompson
jim2@jimthompson.net
www.jimthompson.net
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