Panoramic view of the night sky above Kitt Peak Observatory (National Optical Astronomy Observatory) in the southern Arizona, USA. Light of nearby Tucson is in on the right (east) and Phoenix at 170km away is in the middle (north). The WIYN 0.9 m Telescope appear closer in the foreground and the WIYN 3.5 meter telescope is on the left below the Milky Way. The faint band of light on the left end is the zodiacal light; sunlight reflection from asteroid dust in the Solar System plane.