WMAP DR3 Foreground Reduced Five Year Sky Maps Per Frequency Band

The data made available through this page has been updated. The most recent version of this data may be accessed through https://lambda.gsfc.nasa.gov/product/wmap/current/"

Recommended download procedure for '.fits' or '.tar.gz' files:
right click on the file name and save. For more information on the use of Dataset IDs,
see the LAMBDA Products Overview.

The WMAP sky maps are generated using the HEALPix sky pixelization scheme. The first file listed for each map contains the data in its native HEALPix format. For the convenience of users who do not require the capabilities that HEALPix offers, we also provide the maps in two projected image formats: Mollweide and Zenith Equal Area (ZEA). These files contain the string "_mollweide" and "_zea" respectively, and may be displayed with standard astronomical display software such as DS9 and SAOImage. Note that the image pixels typically over-sample the HEALPix pixels, thus some amount of data replication will be present in the image data. As a result, care must be taken when using the image data in a regime where the noise properties are important since the statistical weight per pixel will also be replicated.

WMAP DR3 Foreground Reduced Five Year IQU Sky Maps Per Frequency Band
Dataset Id
File Info
File Name
Delivery Date
All the files in this table
133.74 MB wmap_band_forered_iqumap_r9_fiveyear_v3.tar.gz
Q Band map for all five years
48.01 MB wmap_band_forered_iqumap_r9_5yr_Q_v3.fits
Fits Header
V Band map for all five years
48.01 MB wmap_band_forered_iqumap_r9_5yr_V_v3.fits
Fits Header
W Band map for all five years
48.01 MB wmap_band_forered_iqumap_r9_5yr_W_v3.fits
Fits Header

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Goddard Space Flight Center, National Aeronautics and Space Administration
HEASARC Director: Dr. Andrew F. Ptak
LAMBDA Director: Dr. Thomas M. Essinger-Hileman
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