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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Parallax in azimuth
From: Robin Stuart
Date: 2020 May 25, 11:48 -0700
From: Robin Stuart
Date: 2020 May 25, 11:48 -0700
Frank you wrote: "...though it does not need to be portioned out in azimuth and altitude."
True but I guess would help in understanding how the calculation works. In the case of the standard lunar you calculate the azimuth difference from the lunar distance and measured altitudes. Then correct the altitudes for refraction and parallax in altitude and compute the geocentric lunar distance using the value of azimuth obtained previously. In order to account for parallax in azimuth presumably the only difference would be that you adjust the azimuth for the parallax in azimuth before using it in the calculation of cleared lunar distance. Is this how it goes or is it too simplistic?
Regards,
Robin
