WISE, The Wide-field Infrared Survey Explorer: Status and Early Results

Astronomy and Astrophysics – Astronomy

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Scientific paper

The Wide-field Infrared Survey Explorer (WISE) is a medium class Explorer that was launched on 14 Dec 2009. WISE should detect hundreds of millions of stars and galaxies, including millions of ULIRGS and QSOs; hundreds of thousands of asteroids; and hundreds old cold brown dwarfs. The telescope cover was ejected on 29 Dec 2009, and the all-sky survey started on 14 Jan 2010. WISE takes more the 7000 framesets per day, with each frameset covering 0.6 square degrees in four bands centered at 3.4, 4.6, 12 and 22 microns. WISE scans semi-circles on the sky about +95 and -90 degrees in ecliptic longitude from the Sun, and covers about 0.6 percent of the sky each day to a depth of 8 or more exposures, and will cover the whole sky in 6 months of surveying. WISE observations of solar-system objects are reported to the Minor Planet Center within a few days of the data being taken, leading to the discovery of comets, Near Earth Objects, and many main belt asteroids. The first half of WISE data on celestially fixed objects will be released to the community 6 months after the end of the cryogenic survey, or about April 2011. The final data release will be 11 months later, about March 2012.

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