A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David Pike
Date: 2020 May 24, 13:30 -0700
DaveW you wrote: Consider the moon on 23 May 2020 at 1330 UTC from 39N 77W. What is the parallax in azimuth of the center?
Have you got that 2" theodolite out again? P in Az is way above my head, but did you spot this http://www.titulosnauticos.net/astro/Chapter9.pdf . It seems very readable, and there are two formulae towards the end. I'm not sure what the units are, but it looks like it depends upon which units you input, i.e. degrees in degrees out. DaveP