Ice Crystal Sky

Going back to the afternoon, here is a shot at the peak of Mt. Lemmon looking south. Some light snow is still falling, but most of the obscuration is due to extremely fine ice crystals floating in the air. The layer of cloud isn't very thick as witnessed by the disc of the sun starting to become apparent again.

The domes, from left to right are, the Astronomy Camp 12 inch LX-200, the Korea Astronomical Observatory, a 1.0-m robotic telescope operated from Korea, the defunct U.S. military radar geodesic dome, the Jamison 20 inch telescope, the Jet Propulsion Lab's 10 inch "atmospheric visibility monitoring" telescope and the 1 meter telescope. The Catalina Sky Survey's 1.5-m (60 inch) telescope is behind to the right.

Canon 20D - 1/3000th second, 18mm @ f/ 3.5, ISO 100