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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Dip and the refractive invariant
From: Marcel Tschudin
Date: 2013 Apr 22, 23:05 +0300
From: Marcel Tschudin
Date: 2013 Apr 22, 23:05 +0300
Paul you mentioned: > > I don't know how smog would affect refraction. > I also do not know it, but the problem with smog may be a different one. From my photos I noticed that smog tends to give a wrong impression of the apparent horizon. Depending on the illumination one may receive the impression to see the apparent horizon whereas in reality it is a sharp border line of the smog and the real horizon is hidden. Marcel