A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Greg Rudzinski
Date: 2017 Jul 3, 10:32 -0700
It is possible to discover systematic error on a two body fix. This is done by taking a back sight on one of the bodies observed (needs an Hs above 60°). The difference in moa between the plotted parallel LOP divided by 2 will be the systematic error which can then be applied to the second observed body (of any Hs) to get an improved two body fix.