NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Greg Rudzinski
Date: 2010 Feb 5, 10:30 -0800
Jeremy,
I worked your upper and lower limb sunset examples using a palm program to derive a standard LOP azimuth and intercept with the given GPS position of 16°33'N 129°7'E as A.P.,Height of eye 100ft., Pressure /Temperature correction from A4 of +3'. No index error applied.
Sun L.L. 18:58:16 ZT
Hs 0°0'
Azimuth 294.3°
Intercept 3.9' away
Sun U.L. 19:00:48 ZT
Hs 0°0'
Azimuth 294.5°
Intercept 2.2' away
This shows that your observations with the naked eye were very good. The sunset Longitude solution should work out if a precise table or program is used.
GRudzinski
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