A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Bill Lionheart
Date: 2020 May 19, 17:04 +0100
After I said on Facebook this a.m. that I was done for the night, just as you were waking up in your longitude, I stayed up another hour having a nightcap and wrote a little bit of code to generate KML (Google Earth viewable) files of the "isoazimuth curves." And yes, I'm convinced now. They are only approximated by small circles in the case of high Dec (Polaris, e.g.). Sample below for Dec=80°. In other cases, the curves are sometimes roughly small circles for certain azimuth ranges, but they quickly become radically different curves.