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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Bowditch tables 12 and 13
From: Bill B
Date: 2012 Aug 15, 22:38 -0400
From: Bill B
Date: 2012 Aug 15, 22:38 -0400
On 8/15/2012 9:07 AM, Jeremy C wrote: > I don't know where the .06 factor comes from as geometric horizon would > seem to me to be a straight line tangent to the curve of the earth. Thanks Jeremy, Greg and Lu. In the bigger picture I am trying to lay the foundation for devising a method of using the practice bubble, or a sextant like the Navy Mark V that can see the horizon, as crude dip meter (from a stable platform.) I see the first step as calibrating the bubble error from a natural horizon. More on that later under a separate subject heading. Bill B