Data Credits

The following is a list of the data and image sources used on this site. You may find it interesting to download/view these sites your self.

  • CDS – Centre de Donnees Astronomiques de Strasbourg
    Online Centre for all Catalogues used on this site.
  • NGCIC image archive
    Thanks to Bob Erdmann for allowing me to link to his images on www.ngcic.org.
  • The NGC and IC Catalogue
    The catalogue is a modern, revised, and expanded version of the original NGC (Dreyer 1888). In addition to incorporating the many corrections to the NGC found over the years, each object was verified on Palomar Observatory Sky Survey (POSS) prints and on plates for southern objects specifically taken for the purpose (although about 90 southern objects could not be verified).

    • The Messier Catalogue
      Subset of the NGC Object ID’s entered by hand.
    • The Caldwell Catalogue
      Subset of the NGC Object ID’s entered by hand.
    • The Herschel 400 Catalogue
      Subset of the NGC Object ID’s entered by hand, manually excluded all objects also listed in Messier and Caldwell Catalogues.
  • The Yale Bright Star Catalogue
    The Bright Star Catalogue (5th Revised Ed. Preliminary Version) is widely used as a source of basic astronomical
    and astrophysical data for stars brighter than magnitude 6.5.
  • Habitable Exoplanets Catalogue
    This is a catalogue of currently confirmed exoplanets, over 1,000 now!

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