The Astronomical Journal (Jan 2024)
Correcting Turbulence-induced Errors in Fiber Positioning for the Dark Energy Spectroscopic Instrument
- E. F. Schlafly,
- J. Guy,
- K. Honscheid,
- S. Kent,
- S. E. Koposov,
- J. Aguilar,
- S. Ahlen,
- S. Bailey,
- D. Brooks,
- T. Claybaugh,
- K. Dawson,
- P. Doel,
- K. Fanning,
- D. P. Finkbeiner,
- A. Font-Ribera,
- J. E. Forero-Romero,
- S. Gontcho A Gontcho,
- G. Gutierrez,
- D. Kirkby,
- T. Kisner,
- A. Kremin,
- M. Landriau,
- J. Lasker,
- L. Le Guillou,
- M. E. Levi,
- A. de la Macorra,
- P. Martini,
- A. Meisner,
- R. Miquel,
- J. Moustakas,
- G. Niz,
- F. Prada,
- G. Rossi,
- E. Sanchez,
- M. Schubnell,
- R. Sharples,
- D. Sprayberry,
- G. Tarlé,
- B. A. Weaver,
- H. Zou,
- DESI
Affiliations
- E. F. Schlafly
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- J. Guy
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- K. Honscheid
- ORCiD
- 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, USA
- S. Kent
- ORCiD
- Department of Astronomy and Astrophysics, University of Chicago , 5640 South Ellis Avenue, Chicago, IL 60637, USA; Fermi National Accelerator Laboratory , PO Box 500, Batavia, IL 60510, USA
- S. E. Koposov
- ORCiD
- Institute for Astronomy, University of Edinburgh , Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK; Institute of Astronomy, University of Cambridge , Madingley Road, Cambridge CB3 0HA, UK; Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge CB3 0HA, UK
- J. Aguilar
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- S. Ahlen
- ORCiD
- Physics Dept., Boston University , 590 Commonwealth Avenue, Boston, MA 02215, USA
- S. Bailey
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- D. Brooks
- ORCiD
- Department of Physics & Astronomy, University College London , Gower Street, London, WC1E 6BT, UK
- T. Claybaugh
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- K. Dawson
- ORCiD
- Department of Physics and Astronomy, The University of Utah , 115 South 1400 East, Salt Lake City, UT 84112, USA
- P. Doel
- Department of Physics & Astronomy, University College London , Gower Street, London, WC1E 6BT, UK
- K. Fanning
- ORCiD
- Kavli Institute for Particle Astrophysics and Cosmology, Stanford University , Menlo Park, CA 94305, USA; SLAC National Accelerator Laboratory , Menlo Park, CA 94305, USA
- D. P. Finkbeiner
- ORCiD
- Department of Physics, Harvard University , 17 Oxford Street, Cambridge, MA 02138, USA; Harvard-Smithsonian Center for Astrophysics , 60 Garden Street, Cambridge, MA 02138, USA
- A. Font-Ribera
- ORCiD
- Department of Physics & Astronomy, University College London , Gower Street, London, WC1E 6BT, UK; Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, 08193 Bellaterra Barcelona, Spain
- J. E. Forero-Romero
- ORCiD
- Departamento de Física, Universidad de los Andes , Cra. 1 No. 18A-10, Edificio Ip, CP 111711, Bogotá, Colombia; Observatorio Astronómico, Universidad de los Andes , Cra. 1 No. 18A-10, Edificio H, CP 111711 Bogotá, Colombia
- S. Gontcho A Gontcho
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- G. Gutierrez
- Fermi National Accelerator Laboratory , PO Box 500, Batavia, IL 60510, USA
- D. Kirkby
- ORCiD
- Department of Physics and Astronomy, University of California , Irvine, CA 92697, USA
- T. Kisner
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- A. Kremin
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- M. Landriau
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- J. Lasker
- ORCiD
- Department of Physics, Southern Methodist University , 3215 Daniel Avenue, Dallas, TX 75275, USA
- L. Le Guillou
- ORCiD
- Sorbonne Université, CNRS/IN2P3 , Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), FR-75005 Paris, France
- M. E. Levi
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- A. de la Macorra
- ORCiD
- Instituto de Física, Universidad Nacional Autónoma de México , Cd. de México C.P. 04510, Mexico
- P. Martini
- ORCiD
- Center 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, USA; The Ohio State University, Columbus , OH 43210, USA
- A. Meisner
- ORCiD
- NSF NOIRLab , 950 North Cherry Avenue, Tucson, AZ 85719, USA
- R. Miquel
- ORCiD
- Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, 08193 Bellaterra Barcelona, Spain; Institució Catalana de Recerca i Estudis Avançats , Passeig de Lluís Companys, 23, 08010 Barcelona, Spain
- J. Moustakas
- ORCiD
- Department of Physics and Astronomy, Siena College , 515 Loudon Road, Loudonville, NY 12211, USA
- G. Niz
- ORCiD
- Departamento de Física, Universidad de Guanajuato —DCI, C.P. 37150, Leon, Guanajuato, Mexico; Instituto Avanzado de Cosmología A.C. , San Marcos 11—Atenas 202. Magdalena Contreras, 10720. Ciudad de México, Mexico
- F. Prada
- ORCiD
- Instituto de Astrofísica de Andalucía (CSIC) , Glorieta de la Astronomía, s/n, E-18008 Granada, Spain
- G. Rossi
- Department of Physics and Astronomy, Sejong University , Seoul, 143-747, Republic of Korea
- E. Sanchez
- ORCiD
- CIEMAT , Avenida Complutense 40, E-28040 Madrid, Spain
- M. Schubnell
- Department of Physics, University of Michigan , Ann Arbor, MI 48109, USA; University of Michigan , Ann Arbor, MI 48109, USA
- R. Sharples
- ORCiD
- Centre for Advanced Instrumentation, Department of Physics, Durham University , South Road, Durham DH1 3LE, UK; Institute for Computational Cosmology, Department of Physics, Durham University , South Road, Durham DH1 3LE, UK
- D. Sprayberry
- ORCiD
- NSF NOIRLab , 950 North Cherry Avenue, Tucson, AZ 85719, USA
- G. Tarlé
- ORCiD
- University of Michigan , Ann Arbor, MI 48109, USA
- B. A. Weaver
- NSF NOIRLab , 950 North Cherry Avenue, Tucson, AZ 85719, USA
- H. Zou
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , A20 Datun Rd., Chaoyang District, Beijing, 100012, People's Republic of China
- DESI
- DOI
- https://doi.org/10.3847/1538-3881/ad7e12
- Journal volume & issue
-
Vol. 168,
no. 6
p. 263
Abstract
Highly multiplexed, robotic, fiber-fed spectroscopic surveys are observing tens of millions of stars and galaxies. For many systems, accurate positioning relies on imaging the fibers in the focal plane and feeding that information back to the robotic positioners to correct their positions. Inhomogeneities and turbulence in the air between the focal plane and the imaging camera can affect the measured positions of fibers, limiting the accuracy with which fibers can be placed on targets. For the Dark Energy Spectroscopic Instrument, we dramatically reduced the effect of turbulence on measurements of positioner locations in the focal plane by taking advantage of stationary positioners and the correlation function of the turbulence. We were able to reduce positioning errors from 7.3 to 3.5 μ m, speeding the survey by 1.6% under typical conditions.
Keywords