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    Re: Quick & Easy: Lat/Lon by Noon Sun
    From: Henry Halboth
    Date: 2006 Nov 14, 00:17 -0500
    Some time ago, I posted examples of Longitude determination by equal altitudes of the Sun at and about Local Apparent Noon, which were done on a sea horizon and generally replicated conditions at sea, except for rolling/pitching and sea spray. These postings were generally ignored at the time, but should be available in the archives.
    ----- Original Message -----
    Sent: Sunday, November 12, 2006 7:22 PM
    Subject: [NavList 1693] Quick & Easy: Lat/Lon by Noon Sun

    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".
    42.0N 87.7W, or 41.4N 72.1W.

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