The u′g′r′i′z′ standard-star system

J. Allyn Smith, Douglas L. Tucker, Stephen Kent, Michael W. Richmond, Masataka Fukugita, Takashi Ichikawa, Shin Ichi Ichikawa, Anders M. Jorgensen, Alan Uomoto, James E. Gunn, Masaru Hamabe, Masaru Watanabe, Alin Tolea, Arne Henden, James Annis, Jeffrey R. Pier, Timothy A. Mckay, Jon Brinkmann, Bing Chen, Jon HoltzmanKazuhiro Shimasaku, Donald G. York

Research output: Contribution to journalArticlepeer-review

1320 Citations (Scopus)


We present the 158 standard stars that define the u′g′r′i′z′ photometric system. These stars form the basis for the photometric calibration of the Sloan Digital Sky Survey. The defining instrument system and filters, the observing process, the reduction techniques, and the software used to create the stellar network are all described. We briefly discuss the history of the star selection process, the derivation of a set of transformation equations for the UBVRcI c system, and plans for future work.

Original languageEnglish
Pages (from-to)2121-2144
Number of pages24
JournalAstronomical Journal
Issue number4 1756
Publication statusPublished - 2002 Apr
Externally publishedYes


  • Catalogs
  • Standards
  • Stars: fundamental parameters

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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