NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Greg Rudzinski
Date: 2012 Aug 21, 21:02 -0700
The attached image and data is for an evening twilight Spica lunar. This is perhaps the toughest camera CN I have been able to do to date. The camera was set at ISO 1600, 1/50 second, F4 using a 200 mm fixed prime lens. A braced hand hold with a smooth squeeze of the shutter gave a sharp enough image to figure a fairly good lunar of -0.7' error. For comparing is a Spica luner observed with a Tamaya sextant using a 7x35 mm scope resulting in a -0.2' error.
Greg Rudzinski
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