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Survey Operations for the Dark Energy Spectroscopic Instrument

Fuente: arXiv

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Bibliographic Details
Main Authors:	Schlafly, E. F., Kirkby, D., Schlegel, D. J., Myers, A. D., Raichoor, A., Dawson, K., Aguilar, J., Prieto, C. Allende, Bailey, S., BenZvi, S., Bermejo-Climent, J., Brooks, D., de la Macorra, A., Dey, Arjun, Doel, P., Fanning, K., Font-Ribera, A., Forero-Romero, J. E., García-Bellido, J., Gontcho, S. Gontcho A, Guy, J., Hahn, C., Honscheid, K., Ishak, M., Juneau, S., Kehoe, R., Kisner, T., Kremin, A., Landriau, M., Lang, D. A., Lasker, J., Levi, M. E., Magneville, C., Manser, C. J., Martini, P., Meisner, A. M., Miquel, R., Moustakas, J., Newman, J. A., Nie, Jundan, Palanque-Delabrouille, N., Percival, W. J., Poppett, C., Rockosi, C., Ross, A. J., Rossi, G., Tarlé, G., Weaver, B. A., Yèche, C., Zhou, R.
Format:	Preprint
Published:	2023
Subjects:	Cosmology and Nongalactic Astrophysics
Online Access:	Acceder al recurso
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_version_	1866911777196867584
author	Schlafly, E. F. Kirkby, D. Schlegel, D. J. Myers, A. D. Raichoor, A. Dawson, K. Aguilar, J. Prieto, C. Allende Bailey, S. BenZvi, S. Bermejo-Climent, J. Brooks, D. de la Macorra, A. Dey, Arjun Doel, P. Fanning, K. Font-Ribera, A. Forero-Romero, J. E. García-Bellido, J. Gontcho, S. Gontcho A Guy, J. Hahn, C. Honscheid, K. Ishak, M. Juneau, S. Kehoe, R. Kisner, T. Kremin, A. Landriau, M. Lang, D. A. Lasker, J. Levi, M. E. Magneville, C. Manser, C. J. Martini, P. Meisner, A. M. Miquel, R. Moustakas, J. Newman, J. A. Nie, Jundan Palanque-Delabrouille, N. Percival, W. J. Poppett, C. Rockosi, C. Ross, A. J. Rossi, G. Tarlé, G. Weaver, B. A. Yèche, C. Zhou, R.
author_facet	Schlafly, E. F. Kirkby, D. Schlegel, D. J. Myers, A. D. Raichoor, A. Dawson, K. Aguilar, J. Prieto, C. Allende Bailey, S. BenZvi, S. Bermejo-Climent, J. Brooks, D. de la Macorra, A. Dey, Arjun Doel, P. Fanning, K. Font-Ribera, A. Forero-Romero, J. E. García-Bellido, J. Gontcho, S. Gontcho A Guy, J. Hahn, C. Honscheid, K. Ishak, M. Juneau, S. Kehoe, R. Kisner, T. Kremin, A. Landriau, M. Lang, D. A. Lasker, J. Levi, M. E. Magneville, C. Manser, C. J. Martini, P. Meisner, A. M. Miquel, R. Moustakas, J. Newman, J. A. Nie, Jundan Palanque-Delabrouille, N. Percival, W. J. Poppett, C. Rockosi, C. Ross, A. J. Rossi, G. Tarlé, G. Weaver, B. A. Yèche, C. Zhou, R.
contents	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 square degrees of the sky. In its first 1.1 years 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.
format	Preprint
id	arxiv_https___arxiv_org_abs_2306_06309
institution	arXiv
publishDate	2023
record_format	arxiv
spellingShingle	Survey Operations for the Dark Energy Spectroscopic Instrument Schlafly, E. F. Kirkby, D. Schlegel, D. J. Myers, A. D. Raichoor, A. Dawson, K. Aguilar, J. Prieto, C. Allende Bailey, S. BenZvi, S. Bermejo-Climent, J. Brooks, D. de la Macorra, A. Dey, Arjun Doel, P. Fanning, K. Font-Ribera, A. Forero-Romero, J. E. García-Bellido, J. Gontcho, S. Gontcho A Guy, J. Hahn, C. Honscheid, K. Ishak, M. Juneau, S. Kehoe, R. Kisner, T. Kremin, A. Landriau, M. Lang, D. A. Lasker, J. Levi, M. E. Magneville, C. Manser, C. J. Martini, P. Meisner, A. M. Miquel, R. Moustakas, J. Newman, J. A. Nie, Jundan Palanque-Delabrouille, N. Percival, W. J. Poppett, C. Rockosi, C. Ross, A. J. Rossi, G. Tarlé, G. Weaver, B. A. Yèche, C. Zhou, R. Cosmology and Nongalactic Astrophysics 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 square degrees of the sky. In its first 1.1 years 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.
title	Survey Operations for the Dark Energy Spectroscopic Instrument
topic	Cosmology and Nongalactic Astrophysics
url	https://arxiv.org/abs/2306.06309