Tuesday, May 12, 2009

22° halo

22° halo round the sun, seen at Whitchurch, May 9th 2009, caused by poorly-oriented ice crystals in cirrostratus clouds. This is a reasonably common celestial phenomenon (he says snobbily, still dining out on that moonbow story), but I'd never noticed one before and I was excited when I did. Besides, it has the advantage of sticking around a long time and of being easy to photograph. The trickiest part was training the blackbird.


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