Date: October 13, 2010
Location: Culp Valley, Anza-Borrego Desert State Park, California. Elevation: 1020 metres
Optics: Canon EF 17-40mm f/4L USM
Camera: Canon EOS 7D on Tripod
Exposure: 210 RAW light frames of 30 seconds, ISO 800. 1h 45min
Processing: Startrails created with Photoshop.