Fading twilight on Kitt Peak finds a satellite flying over the Spacewatch 36 inch dome, the Steward Observatory 90 inch Bok telescope dome and the Kitt Peak 4-meter Mayall dome (as viewed from left to right). If you look carefully, you'll see the Big Dipper just above and right of the Spacewatch Dome. This image was taken with my Sigma 24mm lens on my 20D with an exposure of 30 seconds at f/1.8, ISO 800.
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