Astrometric Calibration and Performance of the Dark Energy Spectroscopic Instrument Focal Plane

Kent, S. and Neilsen, E. and Honscheid, K. and Rabinowitz, D. and Schlafly, E. F. and Guy, J. and Schlegel, D. and García-Bellido, J. and Li, T. S. and Sanchez, E. and Silber, J. and Aguilar, J. and Ahlen, S. and Brooks, D. and Claybaugh, T. and de la Macorra, A. and Doel, P. and Eisenstein, D. J. and Fanning, K. and Font-Ribera, A. and Forero-Romero, J. E. and Gontcho, S. Gontcho A. and Jimenez, J. and Kirkby, D. and Kisner, T. and Kremin, A. and Landriau, M. and Le Guillou, L. and Levi, M. E. and Magneville, C. and Manera, M. and Martini, P. and Meisner, A. and Miquel, R. and Moustakas, J. and Nie, J. and Palanque-Delabrouille, N. and Percival, W. J. and Poppett, C. and Rezaie, M. and Ross, A. J. and Rossi, G. and Schubnell, M. and Seo, H. and Tarlé, Gregory and Weaver, B. A. and Zhou, R. and Zhou, Z. and Zou, H. (2023) Astrometric Calibration and Performance of the Dark Energy Spectroscopic Instrument Focal Plane. The Astronomical Journal, 166 (4). p. 177. ISSN 0004-6256

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Abstract

The Dark Energy Spectroscopic Instrument, consisting of 5020 robotic fiber positioners and associated systems on the Mayall telescope at Kitt Peak, Arizona, is carrying out a survey to measure the spectra of 40 million galaxies and quasars and produce the largest 3D map of the universe to date. The primary science goal is to use baryon acoustic oscillations to measure the expansion history of the universe and the time evolution of dark energy. A key function of the online control system is to position each fiber on a particular target in the focal plane with an accuracy of 11 μm rms 2D. This paper describes the set of software programs used to perform this function along with the methods used to validate their performance.

Item Type: Article
Subjects: Opene Prints > Physics and Astronomy
Depositing User: Managing Editor
Date Deposited: 14 Nov 2023 06:12
Last Modified: 14 Nov 2023 06:12
URI: http://geographical.go2journals.com/id/eprint/3054

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