Transcript Solving Problems with the Sloan Digital Sky Survey

Solving Problems with the
Sloan Digital Sky Survey
Presented by Mike Specian
February 7, 2006
Overview
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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