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The all sky surveys done by the Palomar Observatory Schmidt, the European Southern Observatory Schmidt, and the United Kingdom Schmidt, the InfraRed Astronomical Satellite, and the Two Micron All Sky Survey have proven to be extremely useful tools for astronomy with value that lasts for decades. The Wide-field Infrared Survey Explorer (WISE) is mapping the whole sky following its launch on 2009 December 14. WISE began surveying the sky on 2010 January 14 and completed its first full coverage of the sky on July 17. The survey will continue to cover the sky a second time until the cryogen is exhausted (anticipated in 2010 November). WISE is achieving 5sigma point source sensitivities better than 0.08, 0.11, 1, and 6 mJy in unconfused regions on the ecliptic in bands centered at wavelengths of 3.4, 4.6, 12, and 22 mum. Sensitivity improves toward the ecliptic poles due to denser coverage and lower zodiacal background. The angular resolution is 6.1'', 6.4'', 6.5'', and 12.0'' at 3.4,4.6, 12, and 22 mum, and the astrometric precision for high signal-to-noise sources is better than 0.15''.


The Wide-field Infrared Survey Explorer (WISE):

Mission Description and Initial On-orbit Performance

WISE All-Sky Release Catalog


The WISE All-Sky Release Source Catalog is available in compressed (gzip or bzip2) ascii form. Catalog records are lines in a simple bar-delimited format. Users should be aware that the Catalog table is extremely large. You will need approximately 280 GB of disk space to download all of the gzipped files, or 225 GB to download all of the bzip2-ed files, and an additional 805 GB to uncompress the files. Concatenating the files results in a Catalog with 563,921,584 records.
Each Catalog part contains records corresponding to a specified declination range. If a user desires only the sources within a specified dec range, that user may choose to download only those Catalog parts corresponding to that range. The dec range covered by each file can be found here

Source Catalog

The WISE Source Catalog contains the attributes for 563,921,584 point-like and resolved objects detected on the Atlas Intensity images. Catalog sources are required to have a measured SNR>5 in at least one band, and to meet other criteria to insure a high degree of reliability. Attributes included for each entry in the Source Catalog include:

J2000 positions and uncertainties reconstructed using the 2MASS Point Source Catalog as astrometric reference. Astrometric accuracy is approximately ~200 mas RMS on each axis with respect to the 2MASS reference frame for sources brighter than SNR=40.

Photometry and uncertainties in the four WISE bands. Photometry is performed using point source profile-fitting and multi-aperture photometry. WISE 5sigma photometric sensitivity is estimated to be 0.068, 0.098, 0.86 and 5.4 mJy (16.6, 15.6, 11.3, 8.0 Vega mag) at 3.4, 4.6, 12 and 22 mum in unconfused regions on the ecliptic plane. Sensitivity is better at higher ecliptic latitudes where coverage is deeper and the zodiacal background is lower, and poorer when limited by confusion in high source density or complex background regions. Saturation affects photometry for sources brighter than approximately 8.1, 6.7, 3.8 and -0.4 mag at 3.4, 4.6, 12 and 22 mum, respectively.

Measurement quality flags, image artifact contamination flags, extended source and variability flags, and association information cross-reference WISE sources with the 2MASS Point and Extended Source Catalogs.

Retrieval Instructions:

Use the wget scripts provided for either ( gzip or ( bzip2 format , or access via the Web at site

If desired, use the MD5 checksums to verify the download.

Next, decompress all 50 files using bzip2 or gunzip (depending on format). The files can then be loaded into a database, the details of which depend on the user's software.

Users may also choose to download only those Catalog parts corresponding to desired dec ranges.

Documentation and Acknowledgements

For complete documentation of the WISE All-Sky Release Source Catalog and the All-Sky Data Release, please see the Explanatory Supplement

Catalog format and column description are available at site

If you use IRSA in your research, please include the following acknowledgement in your paper:

"This research has made use of the NASA/ IPAC Infrared Science Archive, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration."

Please include the following standard acknowledgment in any published material that makes use of data products from the primary WISE mission, such as the Source Catalog:

"This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration."


For assistance with this product, please contact IRSA user support accessible from the IRSA web site at IRSA