A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Guus Dekker
Date: 2021 Jun 30, 13:11 -0700
At what minimum magnetude of the moon (Nautical Almanac) can Celestial Observations be made during the night hours (< -18° below the horizon) (for example at sea) so that the horizon is clearly visible ? In my "Preparing the Sky" I can then know if I can make sextant observations during a particular night, or not ?!