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Anti-crepuscular Rays

Date:2.6.2009 Optics:f=20mm
Place:Dorset, England Observer:Till Credner

© Copyright by the observers

Clouds and mountains may cast impressive shadow rays into the sky. If the sun is low or even below the horizon, the streaks may reach all across the entire sky. These crepuscular rays seem to converge in the antisolar point, the point of the sky just opposite the sun, and are therefore called anti-crepuscular. This is, however, just a matter of viewing perspective. In 3D-space the rays are parallel beams.

See also:
More images of crepuscular rays
Les Cowley on Anti-crepuscular rays