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Cited by 2,373Astronomy and Astrophysical ResearchAdaptive optics and wavefront sensingAdvanced optical system design

The 2.5 m Telescope of the Sloan Digital Sky Survey

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Gunn, James E., Siegmund, Walter A., Mannery, Edward J., Owen, Russell E., Hull, Charles L., Leger, R. French, Carey, Larry N., Knapp, Gillian R. +52 more·2006·The Astronomical Journal
DOI 10.1086/500975
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Abstract

We describe the design, construction, and performance of the Sloan Digital Sky Survey telescope located at Apache Point Observatory. The telescope is a modified two-corrector Ritchey-Chrétien design with a 2.5 m, f/2.25 primary, a 1.08 m secondary, a Gascoigne astigmatism corrector, and one of a pair of interchangeable highly aspheric correctors near the focal plane, one for imaging and the other for spectroscopy. The final focal ratio is f/5. The telescope is instrumented by a wide-area, multiband CCD camera and a pair of fiber-fed double spectrographs. Novel features of the telescope include the following: (1) A 3° diameter (0.65 m) focal plane that has excellent image quality and small geometric distortions over a wide wavelength range (3000-10,600 Å) in the imaging mode, and good image quality combined with very small lateral and longitudinal color errors in the spectroscopic mode. The unusual requirement of very low distortion is set by the demands of time-delay-and-integrate (TDI) imaging. (2) Very high precision motion to support open-loop TDI observations. (3) A unique wind baffle/enclosure construction to maximize image quality and minimize construction costs. The telescope had first light in 1998 May and began regular survey operations in 2000.

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Research works printed but not linked: 27

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Authors
Gunn, J. E., Siegmund, W. A., Mannery, E. J., Owen, R. E., Hull, C. L., Leger, R. F., Carey, L. N., Knapp, G. R., York, D. G., Boroski, W. N., Kent, S. M., Lupton, R. H., Rockosi, C. M., Evans, M. L., Waddell, P., Anderson, J. E., Annis, J., Barentine, J. C., Bartoszek, L. M., Bastian, S., Bracker, S. B., Brewington, H. J., Briegel, C. I., Brinkmann, J., Brown, Y. J., Carr, M. A., Czarapata, P. C., Drennan, C. C., Dombeck, T., Federwitz, G. R., Gillespie, B. A., Gonzales, C., Hansen, S. U., Harvanek, M., Hayes, J., Jordan, W., Kinney, E., Klaene, M., Kleinman, S. J., Kron, R. G., Kresinski, J., Lee, G., Limmongkol, S., Lindenmeyer, C. W., Long, D. C., Loomis, C. L., McGehee, P. M., Mantsch, P. M., Neilsen, Jr., Neswold, R. M., Newman, P. R., Nitta, A., Peoples, Jr., Pier, J. R., Prieto, P. S., Prosapio, A., Rivetta, C., Schneider, D. P., Snedden, S., & Wang, S.-I.
Affiliations
  • Princeton University (US)
  • University of Washington (US)
  • Fermi National Accelerator Laboratory (US)
  • University of Chicago (US)
  • University of California, Santa Cruz (US)
  • Los Alamos National Laboratory (US)
  • United States Naval Observatory (US)
  • Pennsylvania State University (US)
ORCID
Venue
The Astronomical Journal
Publisher
American Astronomical Society
Published
2006-04
Volume
131
Issue
4
Pages
2332-2359
ISSN
  • 0004-6256 (ISSN-L)
  • 1538-3881
DOI
10.1086/500975
OpenAlex
W2063568047
Cited by
2,373
References
57
Citations by year
2026: 79 · 2025: 143 · 2024: 140 · 2023: 137 · 2022: 177 · 2021: 148 · 2020: 158 · 2019: 155 · 2018: 140 · 2017: 125 · 2016: 181 · 2015: 119 · 2014: 92 · 2013: 87 · 2012: 98
FWCI
110.71
Type
journal article
Language
en
Open access
Licence
public-domain
Locations
  • The Astronomical Journal (publishedVersion, public-domain)
  • arXiv (Cornell University) (submittedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
  • arXiv (Cornell University)
Funders
  • National Science Foundation
  • U.S. Department of Energy
  • National Aeronautics and Space Administration
  • Alfred P. Sloan Foundation
  • Princeton University
  • University of Washington
  • Johns Hopkins University
  • University of Pittsburgh
  • University of Portsmouth
  • New Mexico State University
  • Max-Planck-Gesellschaft
  • Max-Planck-Institut für Astronomie
  • U.S. Naval Observatory
  • Fermilab
  • Los Alamos National Laboratory
Topics
  • Physical Sciences › Physics and Astronomy › Instrumentation › Astronomy and Astrophysical Research
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Adaptive optics and wavefront sensing
  • Physical Sciences › Engineering › Biomedical Engineering › Advanced optical system design
Keywords
Apache Point Observatory, Ritchey-Chretien telescope, fiber-fed spectrograph, image quality, color error

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