Sloan Digital Sky Survey SkyServer SDSS-II Data Release 6 (DR6)

The Sixth Data Release (DR6) of the Sloan Digital Sky Survey is now available. The spatial coverage of DR6 is about 7% larger than that of DR5. The photometric data in DR6 are based on five-band imaging observations of 8520 square degrees of sky, and include measures of 300 million unique objects.
Based on these photometric data, objects were selected for spectroscopy over a footprint area of 6860 square degrees. DR5 includes derived spectroscopic parameters for 1,163,520 spectra, classified into 792,680 galaxies, 154,925 stars and 104,140 quasars.
DR6 also contains the first release of data from the SEGUE (Sloan Extension for Galactic Understanding and Exploration) program, which is one of the three components of SDSS-II: the Legacy Survey, SEGUE and the SuperNova Survey.
The SEGUE imaging data is available in a separate database in the CAS, SegueDR6, whereas the SEGUE spectra are part of the main database, BestDR6. You can browse SEGUE imaging data on the SEGUE SkyServer site. The SEGUE spectra are in the special SEGUE plates in the BestDR6 database.
Further details of the Data Release 6 can be found at http://www.sdss.org/dr6/.