Planck 2018 results
Free Access

Fig. 2.

image

Normalized gain difference (see main text for precise definition) between two radiometers inside the same horn (28M and 28S here) as a function of pointing ID for both the 2015 (DX11D) and 2018 calibration schemes. The coloured lines show this function for the various iterations in the new {gain-estimation + mapmaking + component separation} calibration scheme. Sky surveys are indicated by alternating white and grey vertical bands. Other 30- and 44 GHz radiometers show qualitatively similar behaviour, whereas the 70 GHz radiometers exhibit too much noise, and corresponding iterations for these detectors do not converge within this scheme.

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