The Wide-field Infrared Survey Explorer at IPAC

Top Ten List of things you should know about the AllWISE Products	Read the AllWISE Explanatory Supplement
Access AllWISE data via IRSA	WISE Project website
WISE mission description paper	NEOWISE description paper
Contact the WISE Help Desk	Frequently asked questions (FAQ)

The AllWISE program builds upon the work of the successful Wide-field Infrared Survey Explorer mission (WISE; Wright et al. 2010) by combining data from the WISE cryogenic and NEOWISE (Mainzer et al. 2011 ApJ, 731, 53) post-cryogenic survey phases to form the most comprehensive view of the full mid-infrared sky currently available. By combining the data from two complete sky coverage epochs using an advanced data processing system, AllWISE has generated new products that have enhanced photometric sensitivity and accuracy, and improved astrometric precision compared to the 2012 WISE All-Sky Data Release. Exploiting the 6 to 12 month baseline between the WISE sky coverage epochs enables AllWISE to measure source motions for the first time, and to compute improved flux variability statistics.

The AllWISE release includes the following new data products:

• The AllWISE Source Catalog contains accurate positions, apparent motion measurements, four-band fluxes and flux variability statistics for over 747 million objects detected on the coadded Atlas Images.


• The AllWISE Multiepoch Photometry Database contains over 42 billion time-tagged profile-fit flux measurements for each object in the Catalog and Reject Table.


• The AllWISE Images Atlas is comprised of 18,240 4-band calibrated 1.56°x1.56° FITS images, depth-of-coverage and noise maps, and image metadata produced by coadding nearly 7.9 million Single-exposure images from all survey phases.


• A Reject Table of over 484 million deep detection source extractions that are either faint objects with flux signal-to-noise ratios below the limit used to define the Source Catalog, duplicate measurements of objects in the Catalog, or spurious detections of noise or image artifacts.

The added depth and sensitivity, source motion measurements and improved flux variability information in the AllWISE products mean that they supersede the earlier All-Sky Data Release Catalog and Atlas for most uses. The All-Sky Release Catalog may have better photometric information for objects brighter than saturation limits in W1 and W2 (W1< 8 mag and W2<7 mag).

AllWISE makes use of data from WISE, 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.