A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Wolfgang Köberer
Date: 2010 Apr 14, 20:31 +0200
Robin Stuart wrote:
"Bowditch (2002 Edition) page 31 states: The
principal navigational use of the stereographic projection is for charts of the
polar regions and devices for mechanical or graphical solution of the
The devices mentioned would presumably exploit the property of sterographic projection that circles on the sphere remain circles on a planar chart. Does anyone know of examples of such devices?"