NOAO >   Observing Info >   Approved Programs >   2012B-0001

Small NOAO Logo

Program Information for 2012B-0001


PI: Josh Frieman, FNAL, frieman@fnal.gov
Address: Center for Particle Astrophysics, Fermilab, P. O. Box 500, Batavia, IL 60510 USA

CoI: DES Collaboration, Various

Title: The Dark Energy Survey

Abstract: The Nobel Prize in Physics for 2011 was awarded for the discovery of the accelerating expansion of the Universe. The primary scientific objective of the Dark Energy Survey (DES) is to address the question: why is the expansion of the Universe speeding up? Is cosmic acceleration due to dark energy or does it require a modification of General Relativity? If dark energy, is it the energy density of the vacuum (Einstein's cosmological constant) or something else? DES will address these questions by measuring the properties of dark energy with unprecedented precision, using four complementary techniques: galaxy clusters, large-scale galaxy clustering (including baryon acoustic oscillations), weak gravitational lensing, and type Ia supernovae. To achieve the requisite precision, over 525 nights we will conduct two optimally interleaved surveys: a wide-area $grizY$ survey covering 5000 sq. deg. to $sim$ 24th mag and a deeper time-domain $griz$ survey with $sim$ 5-day cadence covering 30 sq. deg. In response to an NOAO AO in 2003, the DES collaboration was formed and has built the Dark Energy Camera (DECam), a 570-megapixel, red-sensitive imager with 2.2 degree field of view, five uniform, high-throughput filters, a five- element optical corrector, and a hexapod system for active focus and alignment. We have constructed and will operate a data management system to process and serve DES survey data and a Community Pipeline for NOAO to process community data. The DES data products will provide a rich legacy for the astronomy community, and DECam will be an extraordinary asset as a facility instrument on the Blanco Telescope. This proposal describes the survey and the request for 14 half nights in 2013A.

Program Type: DES

Scheduled Nights:
Run 1 (2012B):  CT-4m/DECam -- 32.5n on Dec 02 - Dec 09 2012, Dec 15 - Dec 23 2012, Dec 28 - Jan 08 2013, Jan 13 - Jan 22 2013, Jan 29 - Jan 31 2013
Run 1 (2013A):  CT-4m/DECam -- 7n on Feb 01 - Feb 08 2013, Feb 17 - Feb 22 2013
Run 1 (2013B):  CT-4m/DECam -- 100.5n on Aug 31 - Sep 17 2013, Sep 21 - Sep 23 2013, Sep 27 - Oct 03 2013, Oct 09 - Oct 14 2013, Oct 23 - Oct 30 2013, Nov 05 - Nov 14 2013, Nov 18 - Nov 22 2013, Nov 28 - Dec 15 2013, Dec 18 - Dec 23 2013, Dec 26 - Jan 04 2014, Jan 09 - Jan 13 2014, Jan 17 - Jan 30 2014
Run 1 (2014A):  CT-4m/DECam -- 4.5n on Feb 01 - Feb 09 2014
Run 1 (2014B):  CT-4m/DECam -- 101n on Aug 15 - Aug 24 2014, Aug 28 - Sep 05 2014, Sep 11 - Sep 15 2014, Sep 19 2014, Sep 22 - Sep 26 2014, Sep 29 - Oct 05 2014, Oct 12 - Oct 15 2014, Oct 18 - Oct 22 2014, Oct 25 - Nov 04 2014, Nov 11 - Nov 20 2014, Nov 24 - Nov 30 2014, Dec 09 - Dec 16 2014, Dec 19 - Dec 30 2014, Jan 02 - Jan 03 2015, Jan 06 - Jan 10 2015, Jan 12 - Jan 31 2015
Run 1 (2015A):  CT-4m/DECam -- 4.5n on Feb 07 - Feb 15 2015
Run 1 (2015B):  CT-4m/DECam -- 106.5n on Aug 04 - Aug 24 2015, Aug 30 - Sep 03 2015, Sep 06 - Sep 28 2015, Sep 30 - Oct 09 2015, Oct 13 - Oct 24 2015, Oct 29 - Nov 08 2015, Nov 12 - Nov 22 2015, Nov 28 - Dec 04 2015, Dec 08 - Dec 22 2015, Dec 28 - Jan 20 2016
Run 1 (2016A):  CT-4m/DECam -- 4.5n on Feb 04 - Feb 12 2016
Run 1 (2016B):  CT-4m/DECam -- 104n on Aug 13 - Aug 15 2016, Aug 22 - Sep 14 2016, Sep 21 - Oct 11 2016, Oct 18 - Oct 28 2016, Nov 01 - Nov 10 2016, Nov 15 - Nov 18 2016, Nov 21 - Dec 08 2016, Dec 14 - Dec 30 2016, Jan 02 - Jan 09 2017, Jan 16 - Jan 31 2017
Run 1 (2017A):  CT-4m/DECam -- 6n on Feb 01 - Feb 08 2017, Feb 15 - Feb 18 2017
Run 1 (2017B):  CT-4m/DECam -- 95.5n on Aug 15 - Sep 02 2017, Sep 07 2017, Sep 11 - Sep 13 2017, Sep 17 - Sep 18 2017, Sep 22 - Oct 03 2017, Oct 09 - Oct 21 2017, Oct 25 - Oct 31 2017, Nov 06 - Nov 09 2017, Nov 13 - Nov 19 2017, Nov 21 - Nov 28 2017, Dec 04 - Dec 25 2017, Dec 29 - Dec 30 2017, Jan 03 - Jan 27 2018
Run 1 (2018B):  CT-4m/DECam -- 53n on Sep 08 - Sep 21 2018, Sep 27 - Sep 30 2018, Oct 08 - Oct 10 2018, Oct 17 - Oct 21 2018, Oct 26 - Oct 29 2018, Nov 05 - Nov 08 2018, Nov 14 - Nov 17 2018, Nov 25 - Dec 19 2018, Dec 27 - Dec 30 2018, Jan 04 2019, Jan 09 2019


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2012B-0001

noaoprop-help@noao.edu

Small NOAO Logo