A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Frank Reed
Date: 2021 Nov 30, 15:58 -0800
"I tried the paper folding trick. Maybe it is a good estimate where to start folding."
If you have a calculator or other device like that can do a good parabolic fit, then you don't need the paper-folding. But if your calculator has gone missing, then it might be useful. A nice aspect of a calculator parabolic fit is that you can experiment with noise in your sights. Try tossing a coin for each sight and if it's heads, add 0.5' to your original sight. If tails, subtract. You can experiment and see just how much that axis of symmetry that determines the time of local noon is shifted by moderate amounts of error in the individual sights and under what conditions.