A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Carl Roberts
Date: 2014 Oct 2, 18:41 -0700
alright guys, the months are passing. Where are the S-tables? what years wewe they in bowdith, or NA?
maybe dr Kolb could boot the NA reduction and include Alan Bayless or S-Table. His Sun Almanac follows the Bowdith format. The HO 249/ "Seelf contained celestial navigation with HO 208" by John Letcher, Jr. have a slightly different method for long term almanac construction. They use a "correction" term to an almanac you have to get data from one you want. this uses any nonlinearity in your copy to compensate for that in the desired one. b=0: EQN(0)=20.3066 b=1: EQN(0)=20.548 b=2:EQN(0)=20.8001 b=3: EQN(0)=21.048 the correction is the difference between the year you want and the almanac. See HO249 pdf on Celestaire. I have LSREG out to 2100 using the data from the ipod NA
(yr-2000)/4= dividend "a" and a positive rem"b" EQN=EQN(0)-"a"x0.0306 (days)