Initial data
20.07.2009 the observer, signed as "Sandis" of the Latvian town of Kuldiga photographed the phenomenon seen in the sky for about 30 minutes.
Translated by «Yandex.Translator»
Original news
Bija redzams kadas 30 min.
Дата события 20-07-2009
Наблюдатель Sandis
Место Kuldiga
Hypotheses
Halo
Halo usually appears around the Sun or moon, sometimes around other powerful light sources such as street lights. There are many types of halos, but they are mostly caused by ice crystals in Cirrus clouds at a height of 5-10 km in the upper troposphere. The form of the observed halo depends on the shape and arrangement of crystals. Reflected and refracted by the ice crystals, the light often turns into a spectrum, which makes halo look like a rainbow, but a halo in low light has a low chroma, which is associated with the peculiarities of twilight vision.
Investigation
On the basis of appearance, this Parghelia (about the sun) is one of many types of halos, looks like a light iridescent stain at the Sun.
Translated by «Yandex.Translator»
Resume
Halo
Halo usually appears around the Sun or moon, sometimes around other powerful light sources such as street lights. There are many types of halos, but they are mostly caused by ice crystals in Cirrus clouds at a height of 5-10 km in the upper troposphere. The form of the observed halo depends on the shape and arrangement of crystals. Reflected and refracted by the ice crystals, the light often turns into a spectrum, which makes halo look like a rainbow, but a halo in low light has a low chroma, which is associated with the peculiarities of twilight vision.
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