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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: A halo-like rainbow round the Sun: some sextant measurements.
From: Robin Stuart
Date: 2017 May 17, 10:01 -0700
From: Robin Stuart
Date: 2017 May 17, 10:01 -0700
I recommend "Rainbows, Halos and Glories" by Robert Greenler and http://www.atoptics.co.uk/
Robin Stuart