Planck early results
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Table 2

Colour corrections for the 11 LFI RCAs individually and averaged by frequency.

Spectral Index α
RCA  −2.00  −1.00 0.00 1.00 2.00 3.00 4.00

LFI18................................ 1.054 1.028 1.011 1.003 1.003 1.010 1.026
LFI19................................ 1.170 1.113 1.066 1.026 0.994 0.969 0.949
LFI20................................ 1.122 1.079 1.044 1.017 0.997 0.983 0.975
LFI21................................ 1.087 1.053 1.028 1.010 1.000 0.996 0.998
LFI22................................ 0.973 0.971 0.976 0.988 1.007 1.033 1.066
LFI23................................ 1.015 1.004 0.999 0.998 1.003 1.012 1.026
70GHz average ........... 1.070 1.041 1.021 1.007 1.001 1.001 1.007
LFI24................................ 1.028 1.015 1.007 1.002 1.000 1.003 1.009
LFI25................................ 1.039 1.024 1.013 1.005 1.000 0.999 1.000
LFI26................................ 1.050 1.032 1.017 1.007 1.000 0.997 0.997
44GHz average ........... 1.039 1.024 1.012 1.004 1.000 0.999 1.002
LFI27................................ 1.078 1.049 1.026 1.010 1.000 0.996 0.998
LFI28................................ 1.079 1.049 1.026 1.009 1.000 0.997 1.002
30GHz average ........... 1.079 1.049 1.026 1.010 1.000 0.997 1.000

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