NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Sight reduction via calculator
From: Frank Reed CT
Date: 2006 May 3, 23:44 -0500
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From: Frank Reed CT
Date: 2006 May 3, 23:44 -0500
Peter, you wrote:
"A = Azimuth, clockwise 000º - 360º; d = declination, +N, -S; l = latitude, +N, -S;
t = local hour angle 000º - 360º; h = altitude
Altitude:
sin h = sin l sin d + cos l cos d cos t
Azimuth:
tan A = -sin t / tan d cos l - sin l cos t"
"A = Azimuth, clockwise 000º - 360º; d = declination, +N, -S; l = latitude, +N, -S;
t = local hour angle 000º - 360º; h = altitude
Altitude:
sin h = sin l sin d + cos l cos d cos t
Azimuth:
tan A = -sin t / tan d cos l - sin l cos t"
For latitude you used a lower case "L" and then italicized?? Did you notice
that this looks almost exactly the same as the symbol for division (the
so-called "forward slash")! I thought I was seeing doublle for a minute. :-)
-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
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