36K
Observer: Philippe Demoulin
Location: Morville, Durbuy, Belgium
Date: April 1, 1997 22:15 UT
The orange color of the sky is due to the sodium lights of Barvaux, 6 km North; the tree is illuminated by a street-lamp using a mercury lamp, which gives a greenish color. Lens: 29 mm at f/2.8. Exposure time 30 seconds. Film Fujicolor SG800.
Philippe Demoulin
demoulin@astro.ulg.ac.be
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