Physics
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21723902d&link_type=abstract
American Astronomical Society, AAS Meeting #217, #239.02; Bulletin of the American Astronomical Society, Vol. 43, 2011
Physics
Scientific paper
The Dark Energy Survey (DES) is a next generation optical survey aimed at understanding the expansion rate of the universe using four complementary methods: weak gravitational lensing, galaxy cluster counts, baryon acoustic oscillations, and Type Ia supernovae. To perform the survey, the DES Collaboration is building the Dark Energy Camera (DECam), a 3 square degree, 520 Megapixel CCD camera that will be mounted at the prime focus of the Blanco 4-meter telescope at the Cerro Tololo Inter-American Observatory. CCD production has finished, yielding roughly twice the required 62 2kx4k detectors. The construction of DECam is nearly finished; some components have already been received at CTIO. In addition, the DES Collaboration has been evaluating the physics prospects and design options of the Dark Energy Survey Upgrade, for which the instrument is a multi-fiber spectrometer, called DESpec. This poster will concentrate on the present status of DECam and the expected start of survey operations and show initial concepts for DESpec.
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