@article{1e5e3b9d7c0d41a0a514863b0883aaa9,
title = "The dark energy survey image processing pipeline",
abstract = "The Dark Energy Survey (DES) is a five-year optical imaging campaign with the goal of understanding the origin of cosmic acceleration. DES performs a ∼5000 deg2 survey of the southern sky in five optical bands (g, r, i, z, Y) to a depth of ∼24th magnitude. Contemporaneously, DES performs a deep, time-domain survey in four optical bands (g, r, i, z) over ∼27 deg2. DES exposures are processed nightly with an evolving data reduction pipeline and evaluated for image quality to determine if they need to be retaken. Difference imaging and transient source detection are also performed in the time domain component nightly. On a bi-annual basis, DES exposures are reprocessed with a refined pipeline and coadded to maximize imaging depth. Here we describe the DES image processing pipeline in support of DES science, as a reference for users of archival DES data, and as a guide for future astronomical surveys.",
keywords = "Cosmology: Observations, Dark energy, Surveys, Techniques: Image processing, Techniques: Photometric",
author = "{DES Collaboration} and E. Morganson and Gruendl, {R. A.} and F. Menanteau and Kind, {M. Carrasco} and Chen, {Y. C.} and G. Daues and A. Drlica-Wagner and Friedel, {D. N.} and M. Gower and Johnson, {M. W.G.} and Johnson, {M. D.} and R. Kessler and F. Paz-Chinch{\'o}n and D. Petravick and C. Pond and B. Yanny and S. Allam and R. Armstrong and W. Barkhouse and K. Bechtol and A. Benoit-L{\'e}vy and Bernstein, {G. M.} and E. Bertin and E. Buckley-Geer and R. Covarrubias and S. Desai and Diehl, {H. T.} and Goldstein, {D. A.} and D. Gruen and Li, {T. S.} and H. Lin and J. Marriner and Mohr, {J. J.} and E. Neilsen and Ngeow, {C. C.} and K. Paech and Rykoff, {E. S.} and M. Sako and I. Sevilla-Noarbe and E. Sheldon and F. Sobreira and Tucker, {D. L.} and W. Wester",
note = "Funding Information: The DESDM team acknowledges support from National Science Foundation through awards NSF AST 07-15036, NSF AST 08-13543 as well as significant seed funding provided by the National Center for Supercomputing Applications and the University of Illinois Department of Astronomy, the College of Language Arts and Science, and the Vice Chancellor for Research. DESDM activities in Munich have been supported by the Ludwig-Maximilians University and the Excellence Cluster Universe, which is supported by the Deutsche Forschungsgemeinschaft (DFG). Funding Information: This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. Funding Information: Funding for the DES Projects has been provided by the U.S. Department of Energy, the U.S. National Science Foundation, the Ministry of Science and Education of Spain, the Science and Technology Facilities Council of the United Kingdom, the Higher Education Funding Council for England, the National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign, the Kavli Institute of Cosmological Physics at the University of Chicago, the Center for Cosmology and Astro-Particle Physics at the Ohio State University, the Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University, Financiadora de Estudos e Projetos, Funda{\c c}{\~a}o Carlos Chagas Filho de Amparo {\`a} Pesquisa do Estado do Rio de Janeiro, Conselho Nacional de Desenvol-vimento Cient{\'i}fico e Tecnol{\'o}gico and the Minist{\'e}rio da Ci{\^e}ncia, Tecnologia e Inova{\c c}{\~a}o, the Deutsche Forschungsgemeinschaft and the Collaborating Institutions in the Dark Energy Survey. Funding Information: The DES data management system is supported by the National Science Foundation under grant Nos. AST-1138766 and AST-1536171. The DES participants from Spanish institutions are partially supported by MINECO under grants AYA2015-71825, ESP2015-66861, FPA2015-68048, SEV-2016-0588, SEV-2016-0597, and MDM-2015-0509, some of which include ERDF funds from the European Union. IFAE is partially funded by the CERCA program of the Generalitat de Catalunya. Research leading to these results has received funding from the European Research Council under the European Union{\textquoteright}s Seventh Framework Program (FP7/2007-2013) including ERC grant agreements 240672, 291329, and 306478. We acknowledge support from the Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), through project number CE110001020. Funding Information: This work made use of the Illinois Campus Cluster, a computing resource that is operated by the Illinois Campus Cluster Program (ICCP) in conjunction with the National Center for Supercomputing Applications (NCSA) and which is supported by funds from the University of Illinois at Urbana-Champaign. Funding Information: This research is part of the Blue Waters sustained-petascale computing project, which is supported by the National Science Foundation (awards OCI-0725070 and ACI-1238993) and the state of Illinois. Blue Waters is a joint effort of the University of Illinois at Urbana-Champaign and its National Center for Supercomputing Applications. Funding Information: Based in part on observations at Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation. Publisher Copyright: {\textcopyright} 2018. The Astronomical Society of the Pacific. All rights reserved.",
year = "2018",
month = jul,
doi = "10.1088/1538-3873/aab4ef",
language = "English (US)",
volume = "130",
journal = "Publications of the Astronomical Society of the Pacific",
issn = "0004-6280",
publisher = "University of Chicago",
number = "989",
}