Contrail Shadow Over Weikersheim, Germany
September 05, 2007
Shortly before sunset on June 5, 2007, I observed a jet aircraft and its contrail in the western sky over Weikersheim, Germany. As shown above, the contrail's shadow was projected onto a lower cloud layer, giving the appearance that it was moving ahead of the jet itself.
Photo details: Canon EOS 30D camera, refractor scope, focal length of 1,200 mm, exposure time of 1/1,000 second, and ISO speed of 100.