NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Quick & Easy: Lat/Lon by Noon Sun
From: Frank Reed CT
Date: 2006 Nov 12, 19:22 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 12, 19:22 EST
Henry H, you wrote:
"As far as I am concerned, the greatest practical accuracy of observed
position, by closely spaced observation, say 10 to 20 minutes, of a single
body, is attainable by solar equal altitudes at or about Local Apparent
Noon, either on land or at sea. This method is quick, easy, readily
understood, and requires little calculation"
Absolutely. I would like to get back to this topic of Lat/Lon by Sun
observations at and around Noon. This is a topic that has been shunned too much
in the past few decades. I agree with you that it's worth discussing more, and
it is "quick, easy, and readily understood", just as you say. I've started a new
thread to get things going. And it's also related to the analemma discussion.
I'm sure a fair number of people on the list have a copy of "Learn to Navigate
by the tutorial system developed at Harvard". Pages 271-272 cover "Reducing a
Noon Sight with an Analemma".
-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
-~----------~----~----~----~------~----~------~--~---