A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Eric Fernandez
Date: 2020 Sep 15, 08:34 -0700
It looks really nice! Sometimes the Sum of corrections does not match individual correction values, I suppose this is caused by rounding, although the internal precision is higher than 1/10th of degree.
One question about refraction correction: close to Hc=0 I get quite different value. They match starting from 5 to10 degrees. Which formula did you use for it please?