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Solving Problems with the Sloan Digital Sky Survey Presented by Mike Specian February 7, 2006 Overview • • • • Telescope Logistics Sloan’s Web Interface, SkyServer Introduction to Database Querying with SQL A Great and Relevant Example SDSS Observing Site, Apache Point Observatory (APO) in New Mexico The Sloan Telescopes ½ Meter Photometric Telescope 2.5 Meter Main Telescope DR1 and DR4 Data Coverage Photometric Coverage Spectroscopic Coverage SDSS Data Acquisition SDSS Statistics • Photometry for 100 Million Objects • Spectroscopy for 1 Million Galaxies • Prior to SDSS, largest survey had 10,000 redshifts, there were about 100,000 total in the literature • Mapped ¼ of the Entire Sky • Four data releases, with a possible fifth coming soon • Currently in “SDSS II” taking additional photometry and spectroscopy, also the Sloan Legacy Survey, SEGUE, and the Sloan Supernova Survey SDSS 3D Map Main Galaxy Sample (MGS) SDSS 3D Map Luminous Red Galaxies (LRG) SDSS 3D Map QSO Sample
