The Second Data Release of the Sloan Digital Sky Survey
Creators: name: Abazajian, Kevork
name: Adelman-McCarthy, Jennifer K.
name: Agüeros, Marcel Andre
name: Allam, Sahar S.
name: Anderson, Kurt S. J.
name: Anderson, Scott F.
name: Annis, James
name: Bahcall, Neta A.
name: Baldry, Ivan K.
name: Bastian, Steven
name: Berlind, Andreas
name: Bernardi, Mariangela
name: Blanton, Michael R.
name: Bochanski, John J.
name: Boroski, William N.
name: Briggs, John W.
name: Brinkmann, J.
name: Brunner, Robert J.
name: Budavári, Tamás
name: Carey, Larry N.
name: Carliles, Samuel
name: Castander, Francisco J.
name: Connolly, A. J.
name: Csabai, István
name: Doi, Mamoru
name: Dong, Feng
name: Eisenstein, Daniel J.
name: Evans, Michael L.
name: Fan, Xiaohui
name: Finkbeiner, Douglas P.
name: Friedman, Scott D.
name: Frieman, Joshua A.
name: Fukugita, Masataka
name: Gal, Roy R.
name: Gillespie, Bruce
name: Glazebrook, Karl
name: Gray, Jim
name: Grebel, Eva K.
name: Gunn, James E.
name: Gurbani, Vijay K.
name: Hall, Patrick B.
name: Hamabe, Masaru
name: Harris, Frederick H.
name: Harris, Hugh C.
name: Harvanek, Michael
name: Heckman, Timothy M.
name: Hendry, John S.
name: Hennessy, Gregory S.
name: Hindsley, Robert B.
name: Hogan, Craig J.
name: Hogg, David W.
name: Holmgren, Donald J.
name: Ichikawa, Shin-Ichi
name: Ichikawa, Takashi
name: Ivezić, Željko
name: Jester, Sebastian
name: Johnston, David E.
name: Jorgensen, Anders M.
name: Kent, Stephen M.
name: Kleinman, S. J.
name: Knapp, G. R.
name: Kniazev, Alexei Yu.
name: Kron, Richard G.
name: Krzesiński, Jurek
name: Kunszt, Peter Z.
name: Kuropatkin, Nickolai
name: Lamb, Donald Q.
name: Lampeitl, Hubert
name: Lee, Brian C.
name: Leger, R. French
name: Li, Nolan
name: Lin, Huan
name: Loh, Yeong-Shang
name: Long, Daniel C.
name: Loveday, Jon
name: Lupton, Robert H.
name: Malik, Tanu
name: Margon, Bruce
name: Matsubara, Takahiko
name: McGehee, Peregrine M.
name: McKay, Timothy A.
name: Meiksin, Avery
name: Munn, Jeffrey A.
name: Nakajima, Reiko
name: Nash, Thomas
name: Neilsen, Eric H.
name: Newberg, Heidi Jo
name: Newman, Peter R.
name: Nichol, Robert C.
name: Nicinski, Tom
name: Nieto-Santisteban, Maria
name: Nitta, Atsuko
name: Okamura, Sadanori
name: O'Mullane, William
name: Ostriker, Jeremiah P.
name: Owen, Russell
name: Padmanabhan, Nikhil
name: Peoples, John
name: Pier, Jeffrey R.
name: Pope, Adrian C.
name: Quinn, Thomas R.
name: Richards, Gordon T.
name: Richmond, Michael W.
name: Rix, Hans-Walter
name: Rockosi, Constance M.
name: Schlegel, David J.
name: Schneider, Donald P.
name: Scranton, Ryan
name: Sekiguchi, Maki
name: Seljak, Uroš
name: Sergey, Gary
name: Sesar, Branimir
name: Sheldon, Erin
name: Shimasaku, Kazu
name: Siegmund, Walter A.
name: Silvestri, Nicole M.
name: Sirko, Edwin
name: Smith, J. Allyn
name: Smolčić, Vernesa
name: Snedden, Stephanie A.
name: Stebbins, Albert
name: Stoughton, Chris
name: Strauss, Michael A.
name: SubbaRao, Mark
name: Szalay, Alexander S.
name: Szapudi, István
name: Szkody, Paula
name: Szokoly, Gyula P.
name: Tegmark, Max
name: Teodoro, Luis
name: Thaka, Aniruddha R.
name: Tremonti, Christy
name: Tucker, Douglas L.
name: Uomoto, Alan
name: Vanden Berk, Daniel E.
name: Vandenberg, Jan
name: Vogeley, Michael S.
name: Voges, Wolfgang
name: Vogt, Nicole P.
name: Walkowicz, Lucianne M.
name: Wang, Shu-I
name: Weinberg, David H.
name: West, Andrew A.
name: White, Simon D. M.
name: Wilhite, Brian C.
name: Xu, Yongzhong
name: Yanny, Brian
name: Yasuda, Naoki
name: Yip, Ching-Wa
name: Yocum, D. R.
name: York, Donald G.
name: Zehavi, Idit
name: Zibetti, Stefano
name: Zucker, Daniel B.
Publisher: name: Columbia University
Year: 2004
Subjects: Astrophysics
Stars--Observations
Imaging systems in astronomy
Astronomy

description: The Sloan Digital Sky Survey (SDSS) has validated and made publicly available its Second Data Release. This data release consists of 3324 deg² of five-band (ugriz) imaging data with photometry for over 88 million unique objects, 367,360 spectra of galaxies, quasars, stars, and calibrating blank sky patches selected over 2627 deg² of this area, and tables of measured parameters from these data. The imaging data reach a depth of r ≈ 22.2 (95% completeness limit for point sources) and are photometrically and astrometrically calibrated to 2% rms and 100 mas rms per coordinate, respectively. The imaging data have all been processed through a new version of the SDSS imaging pipeline, in which the most important improvement since the last data release is fixing an error in the model fits to each object. The result is that model magnitudes are now a good proxy for point-spread function magnitudes for point sources, and Petrosian magnitudes for extended sources. The spectroscopy extends from 3800 to 9200 Å at a resolution of 2000. The spectroscopic software now repairs a systematic error in the radial velocities of certain types of stars and has substantially improved spectrophotometry. All data included in the SDSS Early Data Release and First Data Release are reprocessed with the improved pipelines and included in the Second Data Release. Further characteristics of the data are described, as are the data products themselves and the tools for accessing them.