Circumhorizontal arc
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A circumhorizontal arc is an optical phenomenon that belongs to the family of ice halos formed by the refraction of sunlight or moonlight in plate-shaped ice crystals suspended in the atmosphere, typi
Circumhorizontal arc over the Nepalese Himalaya
Circumhorizontal Arc over peak 12225 in the Sierra Mountains of California
A circumscribed or 22° halo (top) together with a circumhorizon arc (bottom), photographed in Mexico
Photographed in Ravenna, Michigan
Halo (optical phenomenon)
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A halo is an optical phenomenon produced by light interacting with ice crystals suspended in the atmosphere. Halos can have many forms, ranging from colored or white rings to arcs and spots in the sky
A 22° halo around the Sun, observed over Bretton Woods, New Hampshire, USA on February 13, 2021
A 22° halo and circumscribed halo around the Moon, observed near Kitt Peak National Observatory
From top to bottom: A circumzenithal arc, supralateral arc, Parry arc, upper tangent arc, and 22° halo
The so-called "Sun Dog Painting" (Vädersolstavlan) depicting Stockholm in 1535 and the celestial phenomenon at the time interpreted as an ominous presage