NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Greg Rudzinski
Date: 2010 Jun 2, 17:53 -0700
George,
I just did a work up for todays sunset amplitude/azimuth using my Palm to figure the Sun's lower limb altitude above the horizon for a few different heights of eye to get an Hc of zero at a Latitude of 34�10'N Longitude 119�14'W. 3 June 2010 at UT 02:59:36 Declination 22�17.3' N
H.E. Sun Altitude L.L. (moa)
100ft 25.2'
50ft 22.4'
6ft 17.9'
0ft 15.5'
Azimuth 297.3� by program (Hc zero)
297.3� by amplitude formula INV SIN(SIN DEC/COS LAT)
297.4� by program for lower limb 15.5' above horizon at 100ft height of eye
297.7� by program for lower limb on the horizon at 100ft height of eye
No corrections for temperature or pressure.
There seems to be only a few tenths of a degree difference.
GRudzinski
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