NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Marcel Tschudin
Date: 2011 Jun 10, 12:04 +0300
Marcel
Hello, I mostly lurk here.. but I have a question.
Today, I stuck a 1/2" rebar into the ground as a gnomon and recorded the bearing and distance of the shadows over a few hours time. I used a 3" robotic total station, so the bearings and distances are very accurate. What I am looking for is the heliocentric ease/west. I have the geocentric state plane coordinates for the gnomon, the height of the gnomon, the beginning mid and end times of measurements, and the geocentric bearings and distances of the shadows. Am I on a wild goose chase doing it this way, or can the heliocentric east/west direction be found with the information I provided. Please look at the attached 2 page pdf file for a the graphic information. Any comments would be appreciated.
Thanks,
George
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