A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Position-Finding
From: Greg Rudzinski
Date: 2018 Sep 7, 13:10 -0700
Brian Walton e-mailed me privately and directed me to page 528 of the 1966 edition of Bowditch where an all haversine formula for zenith distance could be written also as an all haversine formula to solve for t (meridian angle). The good news is that it worked on the first go. The bad news is that there is a division step. The Otis King slide rule did well for this step. See attached index card format reduction.