Sun Halo

by: L.Laveder/Novapix
Reference: t-met03-00022
Date: 2008-05-08

Halos are caused by sunlight being refracted by cirro-stratus clouds. These are thin clouds, very high in the atmosphere, and are composed of ice crystals. They bend light at a 22 degree angle, which creates a halo around the sun that is 44 degrees in diameter. A circumscribed halo is also visible towards top left.April 26 2008.

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