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 square degree 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 square degrees. 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.
- Authors:
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
- Contributing Org.:
- DES
- OSTI Identifier:
- 1422722
- Report Number(s):
- arXiv:1801.03177; FERMILAB-PUB-17-524-AE
Journal ID: ISSN 0004-6280; 1647428
- DOE Contract Number:
- AC02-07CH11359
- Resource Type:
- Journal Article
- Journal Name:
- Publications of the Astronomical Society of the Pacific
- Additional Journal Information:
- Journal Volume: 130; Journal Issue: 989; Journal ID: ISSN 0004-6280
- Publisher:
- Astronomical Society of the Pacific
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Citation Formats
Morganson, E., and et al. The Dark Energy Survey Image Processing Pipeline. United States: N. p., 2018.
Web. doi:10.1088/1538-3873/aab4ef.
Morganson, E., & et al. The Dark Energy Survey Image Processing Pipeline. United States. doi:10.1088/1538-3873/aab4ef.
Morganson, E., and et al. Tue .
"The Dark Energy Survey Image Processing Pipeline". United States. doi:10.1088/1538-3873/aab4ef. https://www.osti.gov/servlets/purl/1422722.
@article{osti_1422722,
title = {The Dark Energy Survey Image Processing Pipeline},
author = {Morganson, E. and et al.},
abstractNote = {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 square degree 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 square degrees. 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.},
doi = {10.1088/1538-3873/aab4ef},
journal = {Publications of the Astronomical Society of the Pacific},
issn = {0004-6280},
number = 989,
volume = 130,
place = {United States},
year = {2018},
month = {1}
}
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Figure 1: The DES g, r, i, z and Y Standard Bandpasses. These curves include atmospheric transmission and instrumental response. Details can be found in Burke et al. (2018).
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