The Astronomical Journal (Jan 2023)
Survey Operations for the Dark Energy Spectroscopic Instrument
- Edward F. Schlafly,
- David Kirkby,
- David J. Schlegel,
- Adam D. Myers,
- Anand Raichoor,
- Kyle Dawson,
- Jessica Aguilar,
- Carlos Allende Prieto,
- Stephen Bailey,
- Segev BenZvi,
- Jose Bermejo-Climent,
- David Brooks,
- Axel de la Macorra,
- Arjun Dey,
- Peter Doel,
- Kevin Fanning,
- Andreu Font-Ribera,
- Jaime E. Forero-Romero,
- Juan García-Bellido,
- Satya Gontcho A Gontcho,
- Julien Guy,
- ChangHoon Hahn,
- Klaus Honscheid,
- Mustapha Ishak,
- Stéphanie Juneau,
- Robert Kehoe,
- Theodore Kisner,
- Anthony Kremin,
- Martin Landriau,
- Dustin A. Lang,
- James Lasker,
- Michael E. Levi,
- Christophe Magneville,
- Christopher J. Manser,
- Paul Martini,
- Aaron M. Meisner,
- Ramon Miquel,
- John Moustakas,
- Jeffrey A. Newman,
- Jundan Nie,
- Nathalie. Palanque-Delabrouille,
- Will J. Percival,
- Claire Poppett,
- Constance Rockosi,
- Ashley J. Ross,
- Graziano Rossi,
- Gregory Tarlé,
- Benjamin A. Weaver,
- Christophe Yèche,
- Rongpu Zhou,
- DESI Collaboration
Affiliations
- Edward F. Schlafly
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- David Kirkby
- ORCiD
- Department of Physics and Astronomy, University of California , Frederick Reines Hall, Irvine, CA 92697, USA
- David J. Schlegel
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Adam D. Myers
- Department of Physics and Astronomy, University of Wyoming , Laramie, WY 82071, USA
- Anand Raichoor
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Kyle Dawson
- ORCiD
- Department of Physics and Astronomy, The University of Utah , 115 South 1400 East, Salt Lake City, UT 84112, USA
- Jessica Aguilar
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Carlos Allende Prieto
- ORCiD
- Instituto de Astrofísica de Canarias , C/Vía Láctea, s/n, E-38205 La Laguna, Tenerife, Spain; Universidad de La Laguna , Dept. de Astrofísica, E-38206 La Laguna, Tenerife, Spain
- Stephen Bailey
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Segev BenZvi
- ORCiD
- Department of Physics & Astronomy, University of Rochester , Bausch and Lomb Hall, Rochester, NY 14627-0171, USA
- Jose Bermejo-Climent
- Department of Physics & Astronomy, University of Rochester , Bausch and Lomb Hall, Rochester, NY 14627-0171, USA
- David Brooks
- ORCiD
- Department of Physics & Astronomy, University College London , Gower Street, London, WC1E 6BT, UK
- Axel de la Macorra
- Instituto de Física, Universidad Nacional Autónoma de México , Cd. de México C.P. 04510, México
- Arjun Dey
- ORCiD
- NSF’s NOIRLab , 950 N. Cherry Avenue, Tucson, AZ 85719, USA
- Peter Doel
- Department of Physics & Astronomy, University College London , Gower Street, London, WC1E 6BT, UK
- Kevin Fanning
- ORCiD
- The Ohio State University , Columbus, OH 43210, USA
- Andreu Font-Ribera
- ORCiD
- Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, E-08193 Bellaterra Barcelona, Spain
- Jaime E. Forero-Romero
- ORCiD
- Departamento de Física, Universidad de los Andes , Cra. 1 No. 18A-10, Edificio Ip, CP 111711, Bogotá, Colombia
- Juan García-Bellido
- ORCiD
- Instituto de Física Teórica (IFT) UAM/CSIC, Universidad Autónoma de Madrid , Cantoblanco, E-28049, Madrid, Spain
- Satya Gontcho A Gontcho
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Julien Guy
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- ChangHoon Hahn
- ORCiD
- Department of Astrophysical Sciences, Princeton University , Princeton, NJ 08544, USA
- Klaus Honscheid
- The Ohio State University , Columbus, OH 43210, USA; Center for Cosmology and AstroParticle Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210, USA; Department of Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210, USA
- Mustapha Ishak
- ORCiD
- University of Texas , Dallas, 800 W Campbell Road, Richardson, TX 75080, USA
- Stéphanie Juneau
- ORCiD
- NSF’s NOIRLab , 950 N. Cherry Avenue, Tucson, AZ 85719, USA
- Robert Kehoe
- ORCiD
- Department of Physics, Southern Methodist University , 3215 Daniel Avenue, Dallas, TX 75275, USA
- Theodore Kisner
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Anthony Kremin
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Martin Landriau
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Dustin A. Lang
- ORCiD
- Perimeter Institute for Theoretical Physics , 31 Caroline Street North, Waterloo, ON N2L 2Y5, Canada; Department of Physics and Astronomy, University of Waterloo , 200 University Avenue W, Waterloo, ON N2L 3G1, Canada
- James Lasker
- ORCiD
- Department of Physics, Southern Methodist University , 3215 Daniel Avenue, Dallas, TX 75275, USA
- Michael E. Levi
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Christophe Magneville
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- Christopher J. Manser
- ORCiD
- Astrophysics Group, Department of Physics, Imperial College London , Prince Consort Road, London, SW7 2AZ, UK; Department of Physics, University of Warwick , Coventry, CV4 7AL, UK
- Paul Martini
- ORCiD
- Center for Cosmology and AstroParticle Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210, USA; Department of Astronomy, The Ohio State University , 4055 McPherson Laboratory, 140 W 18th Avenue, Columbus, OH 43210, USA
- Aaron M. Meisner
- ORCiD
- NSF’s NOIRLab , 950 N. Cherry Avenue, Tucson, AZ 85719, USA
- Ramon Miquel
- ORCiD
- Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, E-08193 Bellaterra Barcelona, Spain; Institució Catalana de Recerca i Estudis Avançats , Passeig de Lluís Companys, 23, E-08010 Barcelona, Spain
- John Moustakas
- ORCiD
- Department of Physics and Astronomy, Siena College , 515 Loudon Road, Loudonville, NY 12211, USA
- Jeffrey A. Newman
- ORCiD
- Department of Physics & Astronomy and Pittsburgh Particle Physics, Astrophysics, and Cosmology Center (PITT PACC), University of Pittsburgh , 3941 O’Hara Street, Pittsburgh, PA 15260, USA
- Jundan Nie
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , A20 Datun Rd., Chaoyang District, Beijing, 100012, People's Republic of China
- Nathalie. Palanque-Delabrouille
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA; IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- Will J. Percival
- ORCiD
- Perimeter Institute for Theoretical Physics , 31 Caroline Street North, Waterloo, ON N2L 2Y5, Canada; Department of Physics and Astronomy, University of Waterloo , 200 University Avenue W, Waterloo, ON N2L 3G1, Canada; Waterloo Centre for Astrophysics, University of Waterloo , 200 University Avenue W, Waterloo, ON N2L 3G1, Canada
- Claire Poppett
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA; Space Sciences Laboratory, University of California , Berkeley, 7 Gauss Way, Berkeley, CA 94720, USA; University of California , Berkeley, 110 Sproul Hall #5800 Berkeley, CA 94720, USA
- Constance Rockosi
- ORCiD
- Department of Astronomy and Astrophysics, University of California , Santa Cruz, 1156 High Street, Santa Cruz, CA 95065, USA; University of California Observatories , 1156 High Street, Sana Cruz, CA 95065, USA
- Ashley J. Ross
- ORCiD
- Center for Cosmology and AstroParticle Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210, USA
- Graziano Rossi
- Department of Physics and Astronomy, Sejong University , Seoul, 143-747, Republic of Korea
- Gregory Tarlé
- ORCiD
- University of Michigan , Ann Arbor, MI 48109, USA
- Benjamin A. Weaver
- NSF’s NOIRLab , 950 N. Cherry Avenue, Tucson, AZ 85719, USA
- Christophe Yèche
- ORCiD
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- Rongpu Zhou
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- DESI Collaboration
- DOI
- https://doi.org/10.3847/1538-3881/ad0832
- Journal volume & issue
-
Vol. 166,
no. 6
p. 259
Abstract
The Dark Energy Spectroscopic Instrument (DESI) survey is a spectroscopic survey of tens of millions of galaxies at 0 < z < 3.5 covering 14,000 sq. deg. of the sky. In its first 1.1 yr of survey operations, it has observed more than 14 million galaxies and 4 million stars. We describe the processes that govern DESI’s observations of the 15,000 fields composing the survey. This includes the planning of each night’s observations in the afternoon; automatic selection of fields to observe during the night; real-time assessment of field completeness on the basis of observing conditions during each exposure; reduction, redshifting, and quality assurance of each field of targets in the morning following observation; and updates to the list of future targets to observe on the basis of these results. We also compare the performance of the survey with historical expectations and find good agreement. Simulations of the weather and of DESI observations using the real field-selection algorithm show good agreement with the actual observations. After accounting for major unplanned shutdowns, the dark time survey is progressing about 7% faster than forecast, which is good agreement given approximations made in the simulations.
Keywords
