Star trails during the Perseid meteor shower. Shot on August 12, 2009 about halfway between Chicago and Indianapolis.
92 separate 30-second exposures, stacked with startrails.exe
Full-sized version is here: www.jonandchristine.dyndns.org/startrails.jpg
This is my first stacked star trails photo - many thanks to Steven Christenson for his tips on how to do this, and Achim Schaller for creating the startrails.exe application ( www.startrails.de )