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In gallery: Atmospheric optics Ice crystal halos Parry arcs

A fine lunar halo display over New Mexico, on Oct. 14, 2002. The photo shows a 22o halo, sharp upper tangent arc, parselenion (the lunar version of a parhelion), paraselenic circle, fine upper concave Parry arc over the tangent arc, a very faint left infralateral arc and traces of the Lowitz arcs at the parselenion.

Photo taken Oct. 14, 2002. New Mexico, USA, at the rim of Box Canyon.