NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Table A4 + elevation?
From: Marc Bernstein
Date: 2003 May 3, 10:14 -0400
From: Marc Bernstein
Date: 2003 May 3, 10:14 -0400
The sight reduction tables for air navigation do have refraction tables. The altitudes are listed in 5000' increments up to 55,000' and there is a correction table for non-standard temperatures that goes from +47 to -95 C! For 2100' and 20C, a little interpolation shows you need to subtract about 1.5' from Hs