Site News

This page lists changes and additions to this site. The changes include interface enhancements as well as updates to the data that is served by the site.

• July 31, 2012: DR9 released!: Check the DR9 Website for all the details on DR9.
• December 20, 2011:
  • Links for spectral line information, i.e. to the tables sppLines, sppParams, galSpecLine, galSpecIndx and galSpecInfo have been added to the Explore page under the SpecObj menu.
  • A sample query to show how to check whether a point or list of points are in the SDSS footprint has been added to the Sample Queries page.
• November 23, 2011: There are a couple of changes in the the Finding Chart and the Navigate tool:
  • The Outlines feature (checkbox) only shows the outlines up to a certain zoom-out level. When the outlines get too small to be discernible, they are turned off.
  • You can now re-center the image in the Navigate tool by double-clicking anywhere within the image frame. The image will be re-centered at that location.
• June 8, 2011: Three new cross-match tables are now available that provide a spatial cross-match between DR8 spectra/images and DR7 photometry:
  1. SpecDR7: This is a unique match between a DR8 SpecObjAll and a DR7 photoprimary within 1 arcsec. DR7 PhotoTag columns and relevant DR7 ProperMotions are also included for convenience.
  2. PhotoPrimaryDR7: This is a unique match between a DR8 photoprimary and a DR7 photoprimary, and matches between different run/camcol/field are allowed. The match radius is 1 arcsec. The table contains the DR8 and DR7 objids, the distance between them and the DR7 PhotoTag quantities.
  3. PhotoObjDR7: This is a unique match between a DR8 photoobj and a DR7 photoobj, and matches are restricted to the same run/camcol/field are allowed. The match radius is 1 arcsec, and within this radius preference is given to a photoprimary match over a secondary. If no primary match exists, the nearestsecondary match is chosen. If more than one match of a given mode exists, the nearest one is chosen. The table contains the DR8 and DR7 objids and modes, the distance between them, and the DR7 phototag quantities.
• April 28, 2011: Photometric Redshifts are now included in DR8. please the Algorithms page for Photometric Redshifts, and the sample queries for using the photo-z tables. There are four new tables: Photoz, PhotozRF, PhotozTemplateCoeff, and PhotozRFTemplateCoeff tables.
• January 11, 2011:
  • DR8 released. Please see the main DR8 site for general information about Data Release 8 - the first data release of SDSS-III. DR8 changes in the CAS are listed below (links may work on DR8 sites only):
    • There is only one database in DR8 - BestDR8 (for continuity with BestDR7). There are no TARG or other databases.
    • The DAS (Data Archive Server) links are replaced with SAS (Science Archive Server) links.
    • There are several schema changes in SDSS-III, these are reflected in the Schema Browser and the About the Database pages.
    • The Sample Queries have all been redone for SDSS-III.