1. The Robotic Multi-Object Focal Plane System of the Dark Energy Spectroscopic Instrument (DESI)
- Author
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Silber, Joseph Harry, Fagrelius, Parker, Fanning, Kevin, Schubnell, Michael, Aguilar, Jessica Nicole, Ahlen, Steven, Ameel, Jon, Ballester, Otger, Baltay, Charles, Bebek, Chris, Beard, Dominic Benton, Besuner, Robert, Cardiel-Sas, Laia, Casas, Ricard, Castander, Francisco Javier, Claybaugh, Todd, Dobson, Carl, Duan, Yutong, Dunlop, Patrick, Edelstein, Jerry, Emmet, William T, Elliott, Ann, Evatt, Matthew, Gershkovich, Irena, Guy, Julien, Harris, Stu, Heetderks, Henry, Heetderks, Ian, Honscheid, Klaus, Illa, Jose Maria, Jelinsky, Patrick, Jelinsky, Sharon R, Jimenez, Jorge, Karcher, Armin, Kent, Stephen, Kirkby, David, Kneib, Jean-Paul, Lambert, Andrew, Lampton, Mike, Leitner, Daniela, Levi, Michael, McCauley, Jeremy, Meisner, Aaron, Miller, Timothy N, Miquel, Ramon, Mundet, Juliá, Poppett, Claire, Rabinowitz, David, Reil, Kevin, Roman, David, Schlegel, David, Serrano, Santiago, Shourt, William Van, Sprayberry, David, Tarlé, Gregory, Tie, Suk Sien, Weaverdyck, Curtis, Zhang, Kai, Azzaro, Marco, Bailey, Stephen, Becerril, Santiago, Blackwell, Tami, Bouri, Mohamed, Brooks, David, Buckley-Geer, Elizabeth, Castro, Jose Peñate, Derwent, Mark, Dey, Arjun, Dhungana, Govinda, Doel, Peter, Eisenstein, Daniel J, Fahim, Nasib, Garcia-Bellido, Juan, Gaztañaga, Enrique, Gontcho, Satya Gontcho A, Gutierrez, Gaston, Hörler, Philipp, Kehoe, Robert, Kisner, Theodore, Kremin, Anthony, Kronig, Luzius, Landriau, Martin, Guillou, Laurent Le, Martini, Paul, Moustakas, John, Palanque-Delabrouille, Nathalie, Peng, Xiyan, Percival, Will, Prada, Francisco, Prieto, Carlos Allende, Rivera, Guillermo Gonzalez de, Sanchez, Eusebio, Sanchez, Justo, Sharples, Ray, Soares-Santos, Marcelle, Schlafly, Edward, Weaver, Benjamin Alan, Zhou, Zhimin, Zhu, Yaling, and Zou, Hu
- Subjects
astro-ph.IM ,astro-ph.CO - Abstract
A system of 5,020 robotic fiber positioners was installed in 2019 on theMayall Telescope, at Kitt Peak National Observatory. The robots automaticallyre-target their optical fibers every 10 - 20 minutes, each to a precision ofseveral microns, with a reconfiguration time less than 2 minutes. Over the nextfive years, they will enable the newly-constructed Dark Energy SpectroscopicInstrument (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 theexpansion history of the cosmos. In addition to the 5,020 robotic positionersand optical fibers, DESI's Focal Plane System includes 6 guide cameras, 4wavefront cameras, 123 fiducial point sources, and a metrology camera mountedat the primary mirror. The system also includes associated structural, thermal,and electrical systems. In all, it contains over 675,000 individual parts. Wediscuss the design, construction, quality control, and integration of all thesecomponents. We include a summary of the key requirements, the review andacceptance process, on-sky validations of requirements, and lessons learned forfuture multi-object, fiber-fed spectrographs.
- Published
- 2022