NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David Fleming
Date: 2013 May 18, 20:00 -0700
Consider the Great Circle on the Celestial Sphere passing thru Procyon and Capella.
Now imagine a second great Circle which passes through the bisectors of the arcs connecting Procyon and Capella, which arcs compose the first Great Circle.
Clearly the second Great Circle is a loci of points which would have equal altitudes, however only about half that circle would have altitudes > 1°.
The requirement that the sun be greater than 6° below the observers horizon will further restrict the part of the second Great Circle eligible for observers location.
More to follow, hopefully.
Dave
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