Sloan digital sky survey: Early data release Stoughton, Chris Lupton, Robert H. Bernardi, Mariangela Blanton, Michael R. Burles, Scott Castander, Francisco J. Connolly, A. J. Eisenstein, Daniel J. Frieman, Joshua A. Hennessy, G. S. Hindsley, Robert B. Ivezić, Željko Kent, Stephen Kunszt, Peter Z. Lee, Brian C. Meiksin, Avery Munn, Jeffrey A. Newberg, Heidi Jo Nichol, R. C. Nicinski, Tom Pier, Jeffrey R. Richards, Gordon T. Richmond, Michael W. Schlegel, David J. Smith, J. Allyn Strauss, Michael A. SubbaRao, Mark Szalay, Alexander S. Thakar, Aniruddha R. Tucker, Douglas L. Vanden Berk, Daniel E. Yanny, Brian Adelman, Jennifer K. Anderson, Jr., John E. Anderson, Scott F. Annis, James Bahcall, Neta A. Bakken, J. A. Bartelmann, Matthias Bastian, Steven Bauer, Amanda Berman, Eileen Böhringer, Hans Boroski, William N. Bracker, Steve Briegel, Charlie Briggs, John W. Brinkmann, J. Brunner, Robert Carey, Larry Carr, Michael A. Chen, Bing Christian, Damian Colestock, Patrick L. Crocker, J. H. Csabai, István Czarapata, Paul C. Dalcanton, Julianne Davidsen, Arthur F. Davis, John Eric Dehnen, Walter Dodelson, Scott Doi, Mamoru Dombeck, Tom Donahue, Megan Ellman, Nancy Elms, Brian R. Evans, Michael L. Eyer, Laurent Fan, Xiaohui Federwitz, Glenn R. Friedman, Scott Fukugita, Masataka Gal, Roy Gillespie, Bruce Glazebrook, Karl Gray, Jim Grebel, Eva K. Greenawalt, Bruce Greene, Gretchen Gunn, James E. de Haas, Ernst Haiman, Zoltán ; https://orcid.org/0000-0003-3633-5403 Haldeman, Merle Hall, Patrick B. Hamabe, Masaru Hansen, Brad Harris, Frederick H. Harris, Hugh Harvanek, Michael Hawley, Suzanne L. Hayes, J. J. E. Heckman, Timothy M. Helmi, Amina Henden, Arne Hogan, Craig J. Hogg, David W. Holmgren, Donald J. Holtzman, Jon Huang, Chih-Hao Hull, Charles Ichikawa, Shin-Ichi Ichikawa, Takashi Johnston, David E. Kauffmann, Guinevere Kim, Rita S. J. Kimball, Tim Kinney, E. Klaene, Mark Kleinman, S. J. Klypin, Anatoly Knapp, G. R. Korienek, John Krolik, Julian Kron, Richard G. Krzesiński, Jurek Lamb, D. Q. Leger, R. French Limmongkol, Siriluk Lindenmeyer, Carl Long, Daniel C. Loomis, Craig Loveday, Jon MacKinnon, Bryan Mannery, Edward J. Mantsch, P. M. Margon, Bruce McGehee, Peregrine McKay, Timothy A. McLean, Brian Menou, Kristen Merelli, Aronne Mo, H. J. Monet, David G. Nakamura, Osamu Narayanan, Vijay K. Nash, Thomas Neilsen, Jr., Eric H. Newman, Peter R. Nitta, Atsuko Odenkirchen, Michael Okada, Norio Okamura, Sadanori Ostriker, Jeremiah P. Owen, Russell Pauls, A. George Peoples, John Peterson, R. S. Petravick, Donald Pope, Adrian Pordes, Ruth Postman, Marc Prosapio, Angela Quinn, Thomas R. Rechenmacher, Ron Rivetta, Claudio H. Rix, Hans-Walter Rockosi, Constance M. Rosner, Robert Ruthmansdorfer, Kurt Sandford, Dale Schneider, Donald P. Scranton, Ryan Sekiguchi, Maki Sergey, Gary Sheth, Ravi Shimasaku, Kazuhiro Smee, Stephen Snedden, Stephanie A. Stebbins, Albert Stubbs, Christopher Szapudi, István Szkody, Paula Szokoly, Gyula P. Tabachnik, Serge Tsvetanov, Zlatan Uomoto, Alan Vogeley, Michael S. Voges, Wolfgang Waddell, Patrick Walterbos, René Wang, Shu-i Watanabe, Masaru Weinberg, David H. White, Richard L. White, Simon D. M. Wilhite, Brian Wolfe, David Yasuda, Naoki York, Donald G. Zehavi, Idit Zheng, Wei 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 deg2 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. American Astronomical Society 2002 info:eu-repo/semantics/article doc-type:article text http://purl.org/coar/resource_type/c_2df8fbb1 https://research-explorer.ista.ac.at/record/17799 Stoughton C, Lupton RH, Bernardi M, et al. Sloan digital sky survey: Early data release. <i>The Astronomical Journal</i>. 2002;123(1):485-548. doi:<a href="https://doi.org/10.1086/324741">10.1086/324741</a> eng info:eu-repo/semantics/altIdentifier/doi/10.1086/324741 info:eu-repo/semantics/altIdentifier/issn/0004-6256 info:eu-repo/semantics/altIdentifier/e-issn/1538-3881 info:eu-repo/semantics/closedAccess