NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Greg Rudzinski
Date: 2013 Jul 15, 15:07 -0700
Jim,
Attached is a LAN capture taken from Channel Islands Harbor north jetty using a DSLR with a 135 mm lens through a Cassens & Plath whole horizon sextant (scope removed). Camera clock records PDT to the second.
Details:
a.p. Lat. 34° 9.5' N Lon. 119° 13.5' W
H.E. 16 ft.
I.E. 0.0'
Temp 78° F
Press. 29.91 in
Hs 77° 3.5'
UT 20:02:56 7/15/2013
Each pixel is 0.145 minutes of arc using the 135mm lens. The image looks to be right on so no adjustment to Hs is needed.
Greg Rudzinski
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