A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Tony Oz
Date: 2019 May 13, 02:25 -0700
Almost a year ago Rob Hansen asked how could one prevent optics from fogging. Seems nobody replied.
Yesterday I tried an evening twilight sighting and was in difficulties because of the mirrors fogging. I wanted a Moon-Pollux lunar...
Any hints or advises?