Sloan digital sky survey: Early data release

Chris Stoughton, Robert H. Lupton, Mariangela Bernardi, Michael R. Blanton, Scott Burles, Francisco J. Castander, A. J. Connolly, Daniel J. Eisenstein, Joshua A. Frieman, G. S. Hennessy, Robert B. Hindsley, Željko Ivezíc, Stephen Kent, Peter Z. Kunszt, Brian C. Lee, Avery Meiksin, Jeffrey A. Munn, Heidi Jo Newberg, R. C. Nichol, Tom NicinskiJeffrey R. Pier, Gordon T. Richards, Michael W. Richmond, David J. Schlegel, J. Allyn Smith, Michael A. Strauss, Mark SubraRao, Alexander S. Szalay, Aniruddha R. Thakar, Douglas L. Tucker, Daniel E. Vanden Berk, Brian Yanny, Jennifer K. Adelman, John E. Anderson, Scott F. Anderson, James Annis, Neta A. Bahcall, J. A. Bakken, Matthias Bartelmann, Steven Bastian, Amanda Bauer, Eileen Berman, Hans Böhringer, William N. Boroski, Steve Bracker, Charlie Briegel, John W. Briggs, J. Brinkmann, Robert Brunner, Larry Carey, Michael A. Carr, Bing Chen, Damian Christian, Patrick L. Colestock, J. H. Crocker, István Csabai, Paul C. Czarapata, Julianne Dalcanton, Arthur F. Davidsen, John Eric Davis, Walter Dehnen, Scott Dodelson, Mamoru Doi, Tom Dombeck, Megan Donahue, Nancy Ellman, Brian R. Elms, Michael L. Evans, Laurent Eyer, Xiaohui Fan, Glenn R. Federwitz, Scott Friedman, Masataka Fukugita, Roy Gal, Bruce Gillespie, Karl Glazebrook, Jim Gray, Eva K. Grebel, Bruce Greenawalt, Gretchen Greene, James E. Gunn, Ernst De Haas, Zoltán Haiman, Merle Haldeman, Patrick B. Hall, Masaru Hamabe, Brad Hansen, Frederick H. Harris, Hugh Harris, Michael Harvanek, Suzanne L. Hawley, J. J.E. Hayes, Timothy M. Heckman, Amina Helmi, Arne Henden, Craig J. Hogan, David W. Hogg, Donald J. Holmgren

Research output: Contribution to journalReview articlepeer-review

2022 Scopus citations


The Sloan Digital Sky Survey (SDSS) is an imaging and spectroscopic survey that will eventually cover approximately one-quarter of the celestial sphere and collect spectra of ≈ 106 galaxies, 100,000 quasars, 30,000 stars, and 30,000 serendipity targets. In 2001 June, the SDSS released to the general astronomical community its early data release, roughly 462 deg 2 of imaging data including almost 14 million detected objects and 54,008 follow-up spectra. The imaging data were collected in drift-scan mode in five bandpasses (u, g, r, i, and z); our 95% completeness limits for stars are 22.0, 22.2, 22.2, 21.3, and 20.5, respectively. The photometric calibration is reproducible to 5%, 3%, 3%, 3%, and 5%, respectively. The spectra are flux- and wavelength-calibrated, with 4096 pixels from 3800 to 9200 Å at R ≈ 1800. We present the means by which these data are distributed to the astronomical community, descriptions of the hardware used to obtain the data, the software used for processing the data, the measured quantities for each observed object, and an overview of the properties of this data set.

Original languageEnglish (US)
Pages (from-to)485-548
Number of pages64
JournalAstronomical Journal
Issue number1 1753
StatePublished - Jan 2002

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • Atlases
  • Catalogs
  • Surveys


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