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moondod Moon Dog Phenomenon (Hypothesis (Atmospheric optical phenomena…
Moon Dog Phenomenon
Theory
.caused by the refraction and scattering of light
Rayleigh scattering cross-section
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Hypothesis
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by the refraction of moonlight by hexagonal-plate-shaped ice crystals in cirrus or cirrostratus clouds.
ice crystals refract, or bend, light in the same manner that a camera lens bends light.
Observation
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exactly analogous to sun dogs, but are rarer
Confirmation
caused by the moonlight bouncing off the ice crystals in the high atmosphere, focusing the light into a ring
appear as part of the 22° halo, roughly 10 Moon diameters outside the Moon
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