Pointing performance

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The pointing performance of Planck has been very good throughout operations.

The plots below exhibit the pointing errors in Ecliptic longitude and latitude for a few periods during the Planck surveys.

PointingPerformance2011.JPG

PointingPerformance2011latitude.JPG


The plot below exhibits a correlation between the periodic component of the pointing error and the duration of the pointing. This suggests a Solar drift origin to this component.


PointingPerformanceCorrelation.jpg