NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Brad Morris
Date: 2012 Jun 6, 12:29 -0700
Hi Greg
Since the azimuth to each celestial object is different (albeit at a shallow angle), a positional fix is created by the intersection of the LOPs.
How did you do?
Best Regards
Brad Morris
Obtaining a line of position using daytime Venus silhouetted by the Sun during a sunset TOV event became a possibility after looking at some of the TOV sunset images. The horizon to Venus pixel measurement required measuring on different exposure settings. Exposure was increased to show the horizon then decreased to show the Venus silhouette (see side by side images attached).
Pixels : 919
MOA/Pixel for 200 mm lens at small angles .0975'
Hs = .0975(919) = 1* 29.6'
UT 02:55:22 6/6/2012
Lat. 34* 10.4' N
Lon. 119* 14.1' W
Height of eye 12 ft.Azimuth 297.1*
Intercept 1.5' awayThis unique one of a kind celestial line of position was a very nice way to finish a special day :)
Greg Rudzinski
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