Circumpolar Star Trails
Earth's Rotation Seen via Circular Star Trails

Other names:
Camera: Canon EOS 5D Mark II [ unmodified ]
Optics: Canon EF 16-35mm f/2.8L II at 16mm and f/3.2
Mount: Manfrotto tripod
Exposure: 180 minutes [ 90 x 2 minutes ] at ISO 800
Calibration: None
Air Temperature: 50°F
Accessories: Satechi TR-A Intervalometer
Location: Mojave National Preserve, California (off Kelbaker Road)
Date October 23, 2011
Notes: Processing: Image acquisition on CF card using intervalometer. Frames combined using Startrails v1.1. Curves, sharpen, and resize in Photoshop.

The bright star nearest center is Polaris, the North Star.

1800 x 1200 [ ~1.96 MB ]
2800 x 1867 [ ~3.95 MB ]