A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Greg Rudzinski
Date: 2015 Aug 31, 08:23 -0700
A few more possibles: A fat finger entry into the smart phone app., leaving out a dip short correction, a reflection off the Sun shade showing a second image on the horizon mirror, some type of false horizon.
24' is an odd error number. If it were 16' or 32' then semi diameter or limb selection would be the suspect.