The Robotic Multiobject Focal Plane System of the Dark Energy Spectroscopic Instrument (DESI)
Author:
Silber Joseph HarryORCID, Fagrelius Parker, Fanning Kevin, Schubnell Michael, Aguilar Jessica NicoleORCID, Ahlen StevenORCID, Ameel JonORCID, Ballester OtgerORCID, Baltay Charles, Bebek Chris, Beard Dominic BentonORCID, Besuner Robert, Cardiel-Sas Laia, Casas Ricard, Castander Francisco JavierORCID, Claybaugh Todd, Dobson Carl, Duan YutongORCID, Dunlop Patrick, Edelstein Jerry, Emmet William T., Elliott AnnORCID, Evatt Matthew, Gershkovich Irena, Guy JulienORCID, Harris Stu, Heetderks Henry, Heetderks Ian, Honscheid Klaus, Illa Jose Maria, Jelinsky Patrick, Jelinsky Sharon R., Jimenez Jorge, Karcher Armin, Kent StephenORCID, Kirkby David, Kneib Jean-PaulORCID, Lambert Andrew, Lampton Mike, Leitner Daniela, Levi MichaelORCID, McCauley Jeremy, Meisner AaronORCID, Miller Timothy N., Miquel RamonORCID, Mundet Juliá, Poppett Claire, Rabinowitz DavidORCID, Reil Kevin, Roman DavidORCID, Schlegel DavidORCID, Serrano Santiago, Van Shourt William, Sprayberry DavidORCID, Tarlé GregoryORCID, Tie Suk SienORCID, Weaverdyck Curtis, Zhang KaiORCID, Azzaro MarcoORCID, Bailey StephenORCID, Becerril Santiago, Blackwell Tami, Bouri MohamedORCID, Brooks DavidORCID, Buckley-Geer Elizabeth, Castro Jose Peñate, Derwent Mark, Dey ArjunORCID, Dhungana Govinda, Doel Peter, Eisenstein Daniel J.ORCID, Fahim Nasib, Garcia-Bellido JuanORCID, Gaztañaga EnriqueORCID, A Gontcho Satya Gontcho, Gutierrez Gaston, Hörler Philipp, Kehoe RobertORCID, Kisner Theodore, Kremin AnthonyORCID, Kronig Luzius, Landriau MartinORCID, Le Guillou LaurentORCID, Martini PaulORCID, Moustakas JohnORCID, Palanque-Delabrouille Nathalie, Peng XiyanORCID, Percival WillORCID, Prada Francisco, Prieto Carlos AllendeORCID, de Rivera Guillermo GonzalezORCID, Sanchez EusebioORCID, Sanchez Justo, Sharples RayORCID, Soares-Santos MarcelleORCID, Schlafly EdwardORCID, Weaver Benjamin Alan, Zhou ZhiminORCID, Zhu Yaling, Zou HuORCID
Abstract
Abstract
A system of 5020 robotic fiber positioners was installed in 2019 on the Mayall Telescope, at Kitt Peak National Observatory. The robots automatically retarget their optical fibers every 10–20 minutes, each to a precision of several microns, with a reconfiguration time of fewer than 2 minutes. Over the next 5 yr, they will enable the newly constructed Dark Energy Spectroscopic Instrument (DESI) to measure the spectra of 35 million galaxies and quasars. DESI will produce the largest 3D map of the universe to date and measure the expansion history of the cosmos. In addition to the 5020 robotic positioners and optical fibers, DESI’s Focal Plane System includes six guide cameras, four wave front cameras, 123 fiducial point sources, and a metrology camera mounted at the primary mirror. The system also includes associated structural, thermal, and electrical systems. In all, it contains over 675,000 individual parts. We discuss the design, construction, quality control, and integration of all these components. We include a summary of the key requirements, the review and acceptance process, on-sky validations of requirements, and lessons learned for future multiobject, fiber-fed spectrographs.
Funder
U.S. Department of Energy National Science Foundation Ministerio de Ciencia e Innovación Centro para el Desarrollo Tecnológico Industrial
Publisher
American Astronomical Society
Subject
Space and Planetary Science,Astronomy and Astrophysics
Cited by
32 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|