COSMOS Archive
The COSMOS Archive serves data taken for the Cosmic Evolution Survey (COSMOS) project, using IRSA's general search service, Atlas. COSMOS is an astronomical survey designed to probe the formation and evolution of galaxies as a function of cosmic time (redshift) and large scale structural environment. The survey covers a 2 square degree equatorial field with imaging by most of the major space-based telescopes (Hubble, Spitzer, GALEX, XMM, Chandra) and a number of large ground based telescopes (Subaru, VLA, ESO-VLT, UKIRT, NOAO, CFHT, and others). Over 2 million galaxies are detected, spanning 75% of the age of the universe. The COSMOS survey involves almost 100 scientists in a dozen countries. The Spitzer observations of the COSMOS field (S-COSMOS Legacy Project) have been integrated into the COSMOS archive. S-COSMOS images are incorporated in the search results using the form below. The COSMOS and S-COSMOS photometry catalogs can be accessed using IRSA's Catalog Search Service.
You can get a close-up map of a region by clicking on any area on the above image, or by typing a coordinate below.
  • Background greyscale image is a mosaic of COSMOS SDSS 'i' band data, and is used to visualize the COSMOS area of interest
  • The red box shows the COSMOS area of interest. Image coverage outside this area is incomplete.
  • The magenta squares show the 1332 Magellan spectra sources in the field.
  • Use the search form below to request data. Search results will show ACS, VLA, IRAC, MIPS, GALEX, NICMOS, WFPC and XMM cutout images of the requested search size; Subaru, KPNO, CFHT and SDSS images that overlap the search box; and VLA sources which fall within that region. Use Catalog Search to perform advanced searching on COSMOS and S-COSMOS photometry catalogs.
    To bypass searching and go directly to the data download locations, click here for images, catalogs or spectra.
    Also available are image "cutouts" using IRSA's Cutouts Service, which is a general tool to create single or multiple small FITS (and JPEGs) image cutouts of datasets archived at IRSA.
    Click here for more information and instructions on using Atlas Instructions
    Also available is a Program Interface to Atlas.
    Target Selection Single Object
    (Name or Coords)
    Table Upload
    (Multi Object) Instructions
    Size (deg):
    [maximum 2.0]
    Images must cover coordinate
    Source Search Radius:
    [maximum 1.0 deg]
    Match with image search size
    Coordinate Examples:
    • 150.425933 2.430235 eq
    • 10h 01m 42.22s +02d 25m 48.8s Equ J2000
    • 236.81567 +42.50152 ga
    • CGCG 036-024
    Default: Equatorial J2000