Moon Halo and Jupiter

Moonbow
Moon Halo and Jupiter

Object: Moon Halo & Jupiter – 22 degree Halo around the moon
Object type: Moon & reflected light phenomenon, Jupiter
Location: Maui Hawaii
Date December 3,2011
Media: Charcoal pencil & sketch paper, Photoscape used to invert white to black

I walked outside tonight & beheld this lovely phenomenon I have observed many times here in Hawaii. I had always assumed it was a “Moonbow” but on further research realize it is a 22 degree Halo around the moon. Rough measurements were made using my fingers & fist for the degree of bow around the moon as well as distance of Jupiter from the halo to the North East. The inner halo is very distinct as a white rim that fades outward, and the inner area is darker than the outer. The ring around the moon is caused by the refraction of ice crystals in the upper atmosphere. The shape of six sided hexagonal ice crystals results in the focusing of the light into a ring.


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