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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: sight reduction with GPS receiver
From: Charles Seitz
Date: 2005 Mar 21, 15:28 -0500
From: Charles Seitz
Date: 2005 Mar 21, 15:28 -0500
I used Ed Williams' web calculator to generate test
case distances between JFK and LAX:
http://williams.best.vwh.net/gccalc.htm
LAX: (33deg 57min N, 118deg 24min W)
33.9500 N
118.4000 W
JFK: (40deg 38min N, 73deg 47min W)
40.6333 N
73.7833 W
JFK-LAX Sphere 2143.7 nmi 65.9 deg
Lax-JFK Sphere 2143.7 nmi 273.9 deg
JFK-LAX WGS84 2149.9 nmi 65.9 deg
LAX-JFK WGS84 2149.9 nmi 273.9 deg
Garmin GPS 48
JFK-LAX 2150 nmi 274 deg
LAX-JFK 2150 nmi 66 deg
If anyone cares to try a different GPS
receiver, be certain it is set for WGS84
and directions are reported with respect
to true north.
--- CHAS
