The Dark Energy Survey and operations: Years 4 and 5

H. T. Diehl, E. Neilsen, R. A. Gruendl, T. M.C. Abbott, S. Allam, O. Alvarez, J. Annis, E. Balbinot, S. Bhargava, K. Bechtol, G. M. Bernstein, R. Bhatawdekar, S. Bocquet, D. Brout, R. Capasso, R. Cawthon, C. Chang, E. Cook, C. J. Conselice, J. CruzC. D’Andrea, L. Da Costa, R. Das, D. L. DePoy, A. Drlica-Wagner, A. Elliott, S. W. Everett, J. Frieman, A. Fausti Neto, A. Ferté, I. Friswell, K. E. Furnell, L. Gelman, D. W. Gerdes, M. S.S. Gill, D. A. Goldstein, D. Gruen, D. J. Gulledge, S. Hamilton, D. Hollowood, K. Honscheid, D. J. James, M. D. Johnson, M. W.G. Johnson, S. Kent, R. Kessler, G. Khullar, E. Kovacs, A. Kremin, R. Kron, N. Kuropatkin, J. Lasker, A. Lathrop, T. S. Li, M. Manera, M. March, J. L. Marshall, M. Medford, Felipe Menanteau, I. Mohammed, M. R. Monroy, B. Moraes, E. P. Morganson, J. Muir, M. Murphy, B. Nord, A. B. Pace, A. Palmese, Y. Park, F. Paz-Chinchón, M. E.S. Pereira, Donald L Petravick, A. A. Plazas, J. Poh, T. Prochaska, K. Reil, A. K. Romer, A. Roodman, M. Sako, M. Sauseda, D. Scolnic, L. F. Secco, I. Sevilla-Noarbe, N. Shipp, J. A. Smith, M. Soares-Santos, B. Soergel, A. Stebbins, K. T. Story, K. Stringer, F. Tarsitano, B. Thomas, D. L. Tucker, A. K. Vivas, A. R. Walker, M. Y. Wang, C. Weaverdyck, N. Weaverdyck, W. Wester, C. F. Wethers, R. Wilkinson, H. Y. Wu, B. Yanny, A. Zenteno, Y. Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The Dark Energy Survey (DES) is an operating optical survey aimed at understanding the accelerating expansion of the universe using four complementary methods: weak gravitational lensing, galaxy cluster counts, baryon acoustic oscillations, and Type Ia supernovae. To perform the 5000 sq-degree wide field and 30 sq-degree supernova surveys, the DES Collaboration built the Dark Energy Camera (DECam), a 3 square-degree, 570-Megapixel CCD camera that was installed at the prime focus of the Blanco 4-meter telescope at the Cerro Tololo Inter-American Observatory (CTIO). DES has completed its third observing season out of a nominal five. This paper describes DES “Year 4” (Y4) and “Year 5” (Y5), the survey strategy, an outline of the survey operations procedures, the efficiency of operations and the causes of lost observing time. It provides details about the quality of these two-season's data, a summary of the overall status, and plans for the final survey season.

Original languageEnglish (US)
Title of host publicationObservatory Operations
Subtitle of host publicationStrategies, Processes, and Systems VII
EditorsRobert L. Seaman, Alison B. Peck, Chris R. Benn
ISBN (Electronic)9781510619616
StatePublished - 2018
EventObservatory Operations: Strategies, Processes, and Systems VII 2018 - Austin, United States
Duration: Jun 11 2018Jun 15 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherObservatory Operations: Strategies, Processes, and Systems VII 2018
Country/TerritoryUnited States


  • CTIO
  • Cosmology
  • Dark Energy Camera
  • Dark Energy Survey
  • Operations

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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