Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21924804s&link_type=abstract
American Astronomical Society, AAS Meeting #219, #248.04
Astronomy and Astrophysics
Astronomy
Scientific paper
The Dark Energy Survey (DES) is a next generation optical survey aimed at measuring the expansion history of the universe using 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, 570 Megapixel CCD camera mounted at the Blanco 4-meter telescope at the Cerro Tololo Inter-American Observatory. DES will survey 5000 square degrees of the southern galactic cap in 5 filters (g, r, i, z, Y). DECam will be comprised of 74 250 micron thick fully depleted CCDs. Construction of DECam is nearing completion. In order to verify that the camera meets technical specifications for DES and to reduce the time required to commission the instrument, we have constructed a full sized telescope simulator and performed full system testing and integration prior to shipping. Our tests included a simulated DES observing run in which we have collected 4 nights worth of data. We report on the results of these tests performed for the DECam and its impact on the experiment's progress.
Dark Energy Survey Collaboration
Soares-Santos Marcelle
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