Saturday, April 16, 2011

Saskatchewan halos: Optics picture of the day

Ice halo over Wascana Park ©Shelley Banks 

My February photograph of an ice halo in Wascana Park beside the Royal Saskatchewan Museum in Regina, Canada, is the Optics Picture of the Day for April 16, 2011.

The OPOD page at Atmospheric Optics has a large version of this picture (with permission) with a detailed explanation of the ice halo, sundogs and arc in this photo by the optics expert, Les Cowley. There's even a lovely close-up of the parhelion on the left.

(Atmospheric Optics is a great site to browse, if you're interested in rainbows and fog bows and the effects created by light playing on water drops, dust or crystals of ice.)

Enjoy! (And thanks, Les!)

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