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   Upper Tangent Arc - Alaska 

Halos at Fairbanks, Alaska. The sun was 11º high on the morning of 6th March '02 when Brian Hartmann captured this complex display. It is dominated by a luminous upper tangent arc characteristically edged red sunwards. The arc touches the 22º halo directly above the sun and only appears tilted here because of the wide angle lens perspective. A sundog flanks the sun and passing horizontally through it and the sun is a white parhelic circle. A broad sun pillar extends up from the sun. The coloured arc at top right? A rare supralateral arc created by the same long hexagonal prism crystals which produced the upper tangent arc. A rather more rare 46° halo was also faintly visible. Image ©2002 Brian Hartmann, reproduced with permission.