NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David Pike
Date: 2020 May 19, 23:30 -0700
I wrote: E.g. consider Dec 30N and azimuth 060. Z can flip at GHA + 180 , such that Z is still 60, but azimuth is now 360 – 60, so you’ll get a ring which might or might not be a perfect circle. If you stick with ISO A°zimuth. Your saying the direction of the star is always at 60 degrees to the meridian, so in this particular case you’d get a spiral,
Sorry, it was already an hour after bedtime. Please read the above as: E.g. consider Dec 30°N and azimuth 060°. Z could flip at LHA =180° , such that Z is still 60°, but azimuth is now 360 – 60°, so you’ll get a ring which might or might not be a perfect circle. If you stick with ISO Azimuth, you're saying the direction of the star is always at 60 degrees to the meridian, so in this particular case you’d get a spiral. DaveP
