Vädersolstavlan (The Sun Dog Painting) is an oil-on-panel painting depicting a halo display observed over Stockholm on April 20, 1535, and was named so after the sun dogs (Swedish: Vädersol, "Weather sun") appearing on the upper right part of the painting. It is the oldest depiction of Stockholm in colour, but also the oldest Swedish landscape painting and the oldest depiction of sun dogs. Sun dogs (scientific name parhelia - singular parhelion), are an atmospheric phenomenon that consists of a pair of bright spots on either side on the Sun, often co-occurring with a luminous ring known as a 22° halo, created by light interacting with ice crystals in the atmosphere.
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