CIRCUMZENITH ARK (Smile in the sky), LUNAR HALO, MOON DOG
Taken by Marketa S Murray on March 3, 2018 @
Fairbanks - Alaska
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Details:
Last night on our tour to find clear skies and Auroras, our guests had special surprise on the way:
The CIRCUMZENITH ARK (Smile in the sky), LUNAR HALO,
MOON DOG
and later Aurora :-)
The circumzenith arc (CZA) - upside-down rainbow, and the Bravais arc, is an optical phenomenon similar in appearance to a rainbow, but belonging to the family of halos arising from refraction of moonlight through ice crystals, generally in cirrus or cirrostratus clouds, rather than from raindrops. The arc is located at a considerable distance (approximately 46°) above the sun and at most forms a quarter of a circle centered on the zenith. It has been called "a smile in the sky",
Lunar Halo - around the moon happen when thin clouds are drifting high above your head. Tiny ice crystals in Earth's atmosphere cause the halos. They do this by reflecting the light.(Diamond dust)
Moon Dog - Moon dogs (or Paraselene) can be defined as a very rare but bright spots that can be seen around the moon. The moon dogs are normally caused by the refraction of moonlight, which is caused by ice crystals in cirrus clouds and these ice crystals are usually shaped in a hexagonal plate form. (Wikipedia source)
Photographer's website:
http://www.TheAuroraChasers.com
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