moon ring - 22-degree halo

Beautiful winter halo around the moon over San Francisco on Christmas eve 2012.­

The planet near the moon is Jupiter.­ This is a 30 sec long exposure.­

Moon Ring is a rather common phenomenon in winter.­ It happens when there is a thin layer of high clouds formed of ice crystals.­

For more info about this optical phenomenon called "22-degree halo", go to en.­wikipedia.­org/­wiki/­Moon_­ring.

22 degrees 22° halo buildings circle long exposure lunar halo moon halo moon ring night sky planet jupiter stars street victorian houses winter halo

Unclassified photos taken in San Francisco Bay Area.­