Mist and Corona

A colorful corona around the Moon, near the stars of Pleiades star cluster. As described by Atmospheric Optics a corona may be seen when thin clouds partially veil the sun or moon. Look for one around the moon when it is near to full and the sky is dark. The first ring is bluish on the inside grading through greens and yellows to red outermost. The coronae are much smaller than the 22° halo around the Moon and the Sun. Coronae are produced by the diffraction of light by tiny cloud droplets or sometimes small ice crystals.