Two Nights at the CaliforniaStars Observatory
Watch as the telescope mount counters the Earth's motion and tracks the night sky. This is from two nights in April 2012 at the CaliforniaStars Observatory located at the Riverside Astronomical Society's GMARS dark sky site in Landers, California.
Canon EOS 5D Mark II and EF 16-35mm f/2.8L II lens at 16mm. 30-second exposures. Night 1: ISO 1600, f/3.2 and 678 frames. Night 2: ISO3200, f/4 and 885 frames.