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AllWISE Source Catalog
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The AllWISE Source Catalog is available for bulk download 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.  Due to its 
size the complete Catalog has been split into 48 parts, each roughly 24 GB in 
size (gzip-compressed parts are 8.6-8.8 GB each, bzip2-compressed parts are 
6.8-7.3 GB each).  You will need approximately 414 GB of disk space to download
all 48 gzipped Catalog parts, or 340 GB of disk space to download all 48 
bzip2-ed Catalog parts, and an additional 1141 GB to uncompress the parts.  
Concatenating the parts results in a Catalog with 747,634,026 records.  The full
uncompressed Catalog file is 1,224,822,368,660 bytes.

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 of the Catalog parts can be found in
http://irsadist.ipac.caltech.edu/wise-allwise/wise-allwise-cat-dec-ranges.txt


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Catalog Retrieval Instructions
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Use the wget scripts provided for either gzip
(http://irsadist.ipac.caltech.edu/wise-allwise/wget_gz.script) or bzip2 
(http://irsadist.ipac.caltech.edu/wise-allwise/wget_bz2.script) format, or
access via the Web at http://irsadist.ipac.caltech.edu/wise-allwise/index.html

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

Next, decompress all 48 files using gunzip or bzip2 (depending on format).  The 
files can then be loaded into a database individually, or concatenated to 
produce the complete Catalog as a single 1141 GB file.  The details of this 
depend on the user's software.

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


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Documentation and Acknowledgments
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For complete documentation of the AllWISE Data Release and the AllWISE Source 
Catalog, please see the Explanatory Supplement.
http://wise2.ipac.caltech.edu/docs/release/allwise/expsup/

Catalog format and column descriptions are available at
http://wise2.ipac.caltech.edu/docs/release/allwise/expsup/sec2_1a.html

If you use IRSA in your research, please include the following acknowledgment 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 AllWISE program 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, and NEOWISE, which is a project of the Jet Propulsion 
      Laboratory/California Institute of Technology. WISE and NEOWISE are funded 
      by the National Aeronautics and Space Administration."

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Contact
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For assistance with this product, please contact IRSA user support accessible 
via the Helpdesk link on the IRSA web site at http://irsa.ipac.caltech.edu