Friday, January 2, 2009

A day of halos


Ice halo display (sundogs), originally uploaded by jiihaa.


Lights, originally uploaded by jiihaa.


Lammaslampi ice panorama, originally uploaded by jiihaa.

This posting is not really about photography but instead about ice halos. Today we had them at daytime, caused by the sun, and at night from artificial lights.

The halos are generated by light reflecting from small ice crystals in the air. The first photos shows sun dogs, which are colored halos on both sides of the sun. The other photos show night-time halos (one of them is a panorama made from four photos). Actually, I'm not sure whether they are halos at all, or just light reflected from particles in the air.

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