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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Parallax of Right Ascension and Parallax of Declination
From: Peter Monta
Date: 2015 Nov 4, 15:58 -0800
From: Peter Monta
Date: 2015 Nov 4, 15:58 -0800
> [ plumb lines ] ... don't pass through the geocenter except maybe in a few magic places.
Oops, on rereading this I should clarify that plumb lines at midlatitudes miss the geocenter by many kilometers anyway, even if Earth were a perfect uniform ellipsoid. Only the equator and poles would qualify as "magic places" provided the gravity deflection cooperates. ---Peter
