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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: sextant precision.
From: Frank Reed CT
Date: 2005 Jun 21, 01:23 EDT
From: Frank Reed CT
Date: 2005 Jun 21, 01:23 EDT
Bill you wrote: " I could not distinguish and difference with my Astra." A null result is a good result! And: "I found it difficult as overlap was difficult to establish when one of the images was much brighter than the other, and wonder what affect irradiation will have on the whole process when we move from two bright images to one bright and one dim image." I find this easier to do at high magnification. I agree that the phenomenon of "irradiation" may be an issue, and I have a hunch (and that's all) that this is minimized at high magnification. So use your best telescope. -FER 42.0N 87.7W, or 41.4N 72.1W. www.HistoricalAtlas.com/lunars
