September 2000: The Gegenschein

21 October 2000, 21:50-22:10 UT (20 min exposure), f=16mm f/2.8 (fish-eye photo, diagonal = 180), Elite 400, from Mt. Matajur. This is not an aurora but simply a jet stream in the upper atmosphere. It causes high cirrus clouds which soon put an end to our investigation of the Gegenschein which requires a perfectly uniform, dark sky.

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