The photo above showing a sprightly dew bow was captured in a moist field crop at Kämpfelbach Germany on the night October 22, 2010. Since the photo was taken at night, the illuminating source is the almost full moon which is directly opposite of the dew bow at the anti-lunar point. The mechanics of a dew bow are similar to that of a rainbow. Moonlight is refracted and reflected within the dew drops. The city lights in the background are Karlsruhe.
Photo details: Canon EOS 450D camera; F/4; focal length 8 mm; ISO 100; exposure time 30 seconds; 3 photos stitched together.
Posted by Michael Großmann