Wilkinson Microwave Anisotropy Probe
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/
Time-Ordered Data (archive with attitude, etc.)
Three complete time-ordered data archives are supplied with the latest WMAP data release; two of these archives contain calibrated data while the second contains uncalibrated (or raw) data. The uncalibrated archive contains all four radiometer channels for each observation; the calibrated archives have been coadded into two radiometer channels to reduce their size. The first calibrated archive has had an hourly baseline removed as part of the calibration process; the second has had a prewhitening filter applied to the data during calibration.
This data are provided through a set of compressed tar files. Each tar file contains twenty files; each of these files contains one day of WMAP data written in five binary FITS tables. These tables contain:
For a far more complete description of the time-ordered data and these files, see the WMAP Explanatory Supplement. A sample of each FITS header is available here. IDL routines to read this product are available from the WMAP Software page.