A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Greg Rudzinski
Date: 2020 Jul 19, 19:27 -0700
I have had very good luck with a laser bump 1st surface mirror floated on syrofoam cut to fit the Davis artificial horizon. The artificial horizon is positioned on a lazy susan so that a pair of observations can be made, The pair times and altitudes are averaged then one sight reduction is performed. No calibrations or leveling is needed. Errors are equal and opposite. After hundreds of sights so far results have shown to have intercepts of 1' minute of arc or better 90 percent of the time. See link to my web sight showing project construction details. Even Polaris shows off well with the 1st surface mirror.