Rich Swanson
Image taken:
Feb. 21, 2009
Windy Mountain Observatory, Sierra Vista, AZ
I took two separate 180 second photographs of the comet. One tracking on a nearby star, the other tracking on the comet nucleus. Comparing the two shots, you can clearly see how fast the comet is moving. Canon 20Dh, 800 ISO, 180 seconds each
©2013, -- This site is penned daily by Dr. Tony Phillips.