NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Greg Rudzinski
Date: 2012 May 10, 07:04 -0700
Alex,
I only compared 6 observations by counting pixels from the center of the Sun down to or up to the horizon. I was disappointed in the inconsistencies. I suspect that by using the telephoto 200mm lens that the low point of the reflected image was not always achieved. In addition if there was twist added then the image would rise up some and distort. Another try will be made with the 50 mm lens which will give a bigger field of view to better determine the reflected image low point relative to the horizon.
Greg Rudzinski
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