SDSS SkyServer DR4
 
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Version=DR7_2
 
  Welcome to the DR4  site!!!
 
This website presents data from the Sloan Digital Sky Survey, a project to make a map of a large part of the universe. We would like to show you the beauty of the universe, and share with you our excitement as we build the largest map in the history of the world.
News
 
The site hosts data from Data Release 4 (DR4).
What's new in DR4, what's new on this site, and known problems.
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For Astronomers
 
A separate branch of this website for professional astronomers (English)
 
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SkyServer weblogs are public and can be queried. The statistics is here.
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  Welcome to the DR4  Catalog Archive Server site with restricted access for the SDSS Collaboration only.

The following databases are available
BESTDR4Default, the best Photo, Spectro and Tiling data
TARGDR4Photo, frozen at time of target selection
  News
This site contains data from Data Release 4 (DR4). Please see the Site News page, What's New in DR4 page and the Known Problems page for more information.

  
To run a query on one of the DR4 DBs other than
BESTDR4, name the database explicitly in the query:
SELECT TOP 100 * FROM TARGDR4..PhotoObj  
WHERE r<17 and r-i>2
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Privacy Policy
SkyServer weblogs are public and can be queried. The statistics is here.
More...
Privacy Policy
SkyServer weblogs are public and can be queried. The statistics is here.
More...

Privacy Policy
SkyServer weblogs are public and can be queried. The statistics is here.
More...

This is an image of the week showing galaxy NGC xxxx, famous for ...
Image of the week