A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David Smith
Date: 2016 Sep 15, 15:22 -0700
These are great photos Greg.
When the horizon has land in the distance, as in your first photo, how can we be absolutely sure that we are sighting the true horizon and not just the beach? I imagine this could be relevant at dusk, dawn and in low visibility conditions.