NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Another "emergency navigation" sight reduction method
From: John Brown
Date: 2015 Jul 12, 02:30 -0700
From: John Brown
Date: 2015 Jul 12, 02:30 -0700
I have enjoyed the debate on various SR methods, so with no particular axe to grind and no recent practice, I found my old Burton's Tables and got the attached results in under 4 minutes. I like the way these tables are compact, designed for SR and the fact that the classic cosine-versine (or haversine) method requires no special rules, other than consideration of L+~d.
I used the AP, GHA and dec in earlier Navlist examples of Bygrave SR.
John
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