NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Stereographic Devices
From: Robin Stuart
Date: 2010 Apr 14, 06:29 -0700
From: Robin Stuart
Date: 2010 Apr 14, 06:29 -0700
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 navigational triangle.
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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?
Robin Stuart
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