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I Maps (Individual Differencing Assemblies)
0.23°- 0.93° (frequency dependent)
Iterative algorithms are used to create skymaps from the calibrated differential time-ordered WMAP data for each of the ten differencing assemblies. Each pixel in a map represents a sky temperature for the bandpass appropriate to the differencing assembly. The CMB dipole has been removed and the zero point of each map has been set using a Galactic csc |b| model (see Bennett et al. below).
The data provided in each map consist of two fields for each pixel:
More details can be found in: