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Welcome to the SDSS CasJobs site. This is the CasJobs site for SDSS-I and SDSS-II, if you are looking for the SDSS-III CasJobs site, that is a separate (new) site at

As of January 29, 2009, this site has been upgraded to v3_5_16, which contains several bug fixes and changes since the previous upgrade (v3_5_15 on January 28, 2009).

To see the full list of changes in this version, please see the Change Log. Please send feedback to the SDSS Help Desk using the Contact link at the bottom of each page.

Accounts inactive for more than one year may be marked idle and detached, but will be restored upon request. Please contact the helpdesk HERE if you have trouble accessing your account

CasJobs is an online workbench for large scientific catalogs, designed to emulate and enhance local free-form query access in a web environment.

Some features of this application include...

The web interface for CasJobs is fully compatible with recent versions of the following browsers:

CasJobs is partially compatible with recent versions of the following browsers:

For more information, try the CasJobs FAQ, or guide. Or, to get started right away, either login or create an account.