Wilkinson Microwave Anisotropy Probe
Spacecraft
Columns: Property | K-band | Ka-band | Q-band | V-band | W-band
Central wavelength (mm) | 13 | 9.1 | 7.3 | 4.9 | 3.2 | Central frequency ( GHz ) | 23 | 33 | 41 | 61 | 94 | Bandwidth (GHz) | 5.5 | 7 | 8.3 | 14 | 20.5 | Beam size (arcminutes) | 52.8 | 39.6 | 30.6 | 21 | 13.2 | Number of radiometers | 2 | 2 | 4 | 4 | 8 | System temperature ( K ) | 29 | 39 | 59 | 92 | 145 | Sensitivity (mK s ^{1/2} ) | 0.8 | 0.8 | 1 | 1.2 | 1.6