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Halo (optical phenomenon) A halo (from Ancient Greek ἅλως (hálōs) 'threshing floor, disk') [1] is an optical phenomenon produced by light (typically from the Sun or Moon) 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.
22° halo. A 22° halo is an atmospheric optical phenomenon that consists of a halo with an apparent diameter of approximately 22° around the Sun or Moon. Around the Sun, it may also be called a sun halo. [1] Around the Moon, it is also known as a moon ring, storm ring, or winter halo. It forms as sunlight or moonlight is refracted by millions ...
A 22° halo around the Sun, observed over Bretton Woods, New Hampshire, USA on February 13, 2021. A halo (ἅλως; also known as a nimbus, icebow or gloriole) is an optical phenomenon produced by the interaction of light from the Sun or Moon with ice crystals in the atmosphere, resulting in colored or white arcs, rings or spots in the sky. [23]
Starry Night Photography – Sun Dog, Sun Halo, Moon Halo; Photo slideshow; 4 point Sun dog with complete 360 degree ring in Shubarkurduk, Kazachstan; Rare sun halo appears; SDO Sundog Mystery – A phenomenon that occurred during the launch of the Solar Dynamics Observatory; Nemiroff, R.; Bonnell, J., eds. (8 November 2011).
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, typically in actual cirrus or cirrostratus clouds. In its full form, the arc has the appearance of a large, brightly spectrum-coloured band (red being ...
Storkyrkan, Stockholm. Vädersolstavlan (Swedish for ' The Sundog Painting '; pronunciation ⓘ) is an oil-on-panel painting depicting a halo display, an atmospheric optical phenomenon, observed over Stockholm on 20 April 1535. It is named after the sun dogs (Swedish: Vädersol, lit. 'weather sun') appearing on the upper right part of the painting.
A parhelic circle is a type of halo, an optical phenomenon appearing as a horizontal white line on the same altitude as the Sun, or occasionally the Moon. If complete, it stretches all around the sky, but more commonly it only appears in sections. [2] If the halo occurs due to light from the Moon rather than the Sun, it is known as a ...
A halo display photo documented by Cindy McFee, NOAA, December 1980 at the South Pole Station.Several distinct halo phenomena are featured in the photo: Two sun dogs (bright spots), a parhelic circle (horizontal line), a 22° halo (circle), and an upper tangent arc and a Parry arc (top).