Survey Operations for the Dark Energy Spectroscopic Instrument
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 proc...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astronomical Journal |
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| Online Access: | https://doi.org/10.3847/1538-3881/ad0832 |
| _version_ | 1797517058114584576 |
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| author | 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 |
| author_facet | 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 |
| author_sort | Edward F. Schlafly |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T07:09:32Z |
| format | Article |
| id | doaj.art-51d2c8e17068455287e0a7467c36376b |
| institution | Directory Open Access Journal |
| issn | 1538-3881 |
| language | English |
| last_indexed | 2024-03-10T07:09:32Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astronomical Journal |
| spelling | doaj.art-51d2c8e17068455287e0a7467c36376b2023-11-22T15:30:16ZengIOP PublishingThe Astronomical Journal1538-38812023-01-01166625910.3847/1538-3881/ad0832Survey Operations for the Dark Energy Spectroscopic InstrumentEdward F. Schlafly0https://orcid.org/0000-0002-3569-7421David Kirkby1https://orcid.org/0000-0002-8828-5463David J. Schlegel2https://orcid.org/0000-0002-5042-5088Adam D. Myers3Anand Raichoor4https://orcid.org/0000-0001-5999-7923Kyle Dawson5https://orcid.org/0000-0002-0553-3805Jessica Aguilar6Carlos Allende Prieto7https://orcid.org/0000-0002-0084-572XStephen Bailey8https://orcid.org/0000-0003-4162-6619Segev BenZvi9https://orcid.org/0000-0001-5537-4710Jose Bermejo-Climent10David Brooks11https://orcid.org/0000-0002-8458-5047Axel de la Macorra12Arjun Dey13https://orcid.org/0000-0002-4928-4003Peter Doel14Kevin Fanning15https://orcid.org/0000-0003-2371-3356Andreu Font-Ribera16https://orcid.org/0000-0002-3033-7312Jaime E. Forero-Romero17https://orcid.org/0000-0002-2890-3725Juan García-Bellido18https://orcid.org/0000-0002-9370-8360Satya Gontcho A Gontcho19https://orcid.org/0000-0003-3142-233XJulien Guy20https://orcid.org/0000-0001-9822-6793ChangHoon Hahn21https://orcid.org/0000-0003-1197-0902Klaus Honscheid22Mustapha Ishak23https://orcid.org/0000-0002-6024-466XStéphanie Juneau24https://orcid.org/0000-0002-0000-2394Robert Kehoe25https://orcid.org/0000-0002-7101-697XTheodore Kisner26https://orcid.org/0000-0003-3510-7134Anthony Kremin27https://orcid.org/0000-0001-6356-7424Martin Landriau28https://orcid.org/0000-0003-1838-8528Dustin A. Lang29https://orcid.org/0000-0002-1172-0754James Lasker30https://orcid.org/0000-0003-2999-4873Michael E. Levi31https://orcid.org/0000-0003-1887-1018Christophe Magneville32Christopher J. Manser33https://orcid.org/0000-0003-1543-5405Paul Martini34https://orcid.org/0000-0002-0194-4017Aaron M. Meisner35https://orcid.org/0000-0002-1125-7384Ramon Miquel36https://orcid.org/0000-0002-6610-4836John Moustakas37https://orcid.org/0000-0002-2733-4559Jeffrey A. Newman38https://orcid.org/0000-0001-8684-2222Jundan Nie39https://orcid.org/0000-0001-6590-8122Nathalie. Palanque-Delabrouille40https://orcid.org/0000-0003-3188-784XWill J. Percival41https://orcid.org/0000-0002-0644-5727Claire Poppett42Constance Rockosi43https://orcid.org/0000-0002-6667-7028Ashley J. Ross44https://orcid.org/0000-0002-7522-9083Graziano Rossi45Gregory Tarlé46https://orcid.org/0000-0003-1704-0781Benjamin A. Weaver47Christophe Yèche48https://orcid.org/0000-0001-5146-8533Rongpu Zhou49https://orcid.org/0000-0001-5381-4372DESI CollaborationSpace Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USADepartment of Physics and Astronomy, University of California , Frederick Reines Hall, Irvine, CA 92697, USALawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USADepartment of Physics and Astronomy, University of Wyoming , Laramie, WY 82071, USALawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USADepartment of Physics and Astronomy, The University of Utah , 115 South 1400 East, Salt Lake City, UT 84112, USALawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USAInstituto 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, SpainLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USADepartment of Physics & Astronomy, University of Rochester , Bausch and Lomb Hall, Rochester, NY 14627-0171, USADepartment of Physics & Astronomy, University of Rochester , Bausch and Lomb Hall, Rochester, NY 14627-0171, USADepartment of Physics & Astronomy, University College London , Gower Street, London, WC1E 6BT, UKInstituto de Física, Universidad Nacional Autónoma de México , Cd. de México C.P. 04510, MéxicoNSF’s NOIRLab , 950 N. Cherry Avenue, Tucson, AZ 85719, USADepartment of Physics & Astronomy, University College London , Gower Street, London, WC1E 6BT, UKThe Ohio State University , Columbus, OH 43210, USAInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, E-08193 Bellaterra Barcelona, SpainDepartamento de Física, Universidad de los Andes , Cra. 1 No. 18A-10, Edificio Ip, CP 111711, Bogotá, ColombiaInstituto de Física Teórica (IFT) UAM/CSIC, Universidad Autónoma de Madrid , Cantoblanco, E-28049, Madrid, SpainLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USALawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USADepartment of Astrophysical Sciences, Princeton University , Princeton, NJ 08544, USAThe 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, USAUniversity of Texas , Dallas, 800 W Campbell Road, Richardson, TX 75080, USANSF’s NOIRLab , 950 N. Cherry Avenue, Tucson, AZ 85719, USADepartment of Physics, Southern Methodist University , 3215 Daniel Avenue, Dallas, TX 75275, USALawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USALawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USALawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USAPerimeter 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, CanadaDepartment of Physics, Southern Methodist University , 3215 Daniel Avenue, Dallas, TX 75275, USALawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USAIRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, FranceAstrophysics Group, Department of Physics, Imperial College London , Prince Consort Road, London, SW7 2AZ, UK; Department of Physics, University of Warwick , Coventry, CV4 7AL, UKCenter 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, USANSF’s NOIRLab , 950 N. Cherry Avenue, Tucson, AZ 85719, USAInstitut 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, SpainDepartment of Physics and Astronomy, Siena College , 515 Loudon Road, Loudonville, NY 12211, USADepartment of Physics & Astronomy and Pittsburgh Particle Physics, Astrophysics, and Cosmology Center (PITT PACC), University of Pittsburgh , 3941 O’Hara Street, Pittsburgh, PA 15260, USANational Astronomical Observatories, Chinese Academy of Sciences , A20 Datun Rd., Chaoyang District, Beijing, 100012, People's Republic of ChinaLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA; IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, FrancePerimeter 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, CanadaLawrence 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, USADepartment 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, USACenter for Cosmology and AstroParticle Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210, USADepartment of Physics and Astronomy, Sejong University , Seoul, 143-747, Republic of KoreaUniversity of Michigan , Ann Arbor, MI 48109, USANSF’s NOIRLab , 950 N. Cherry Avenue, Tucson, AZ 85719, USAIRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, FranceLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USAThe 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.https://doi.org/10.3847/1538-3881/ad0832Redshift surveysSpectroscopyObservatories |
| spellingShingle | 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 Survey Operations for the Dark Energy Spectroscopic Instrument The Astronomical Journal Redshift surveys Spectroscopy Observatories |
| title | Survey Operations for the Dark Energy Spectroscopic Instrument |
| title_full | Survey Operations for the Dark Energy Spectroscopic Instrument |
| title_fullStr | Survey Operations for the Dark Energy Spectroscopic Instrument |
| title_full_unstemmed | Survey Operations for the Dark Energy Spectroscopic Instrument |
| title_short | Survey Operations for the Dark Energy Spectroscopic Instrument |
| title_sort | survey operations for the dark energy spectroscopic instrument |
| topic | Redshift surveys Spectroscopy Observatories |
| url | https://doi.org/10.3847/1538-3881/ad0832 |
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