Truncation errors are negligible. Using the kernel with the largest truncation error as worst case scenario, we plot the beam convolved simulated CMB map used in this test of the Planck 217 GHz channels (left panel, we show a 10° × 10° patch). Middle panel: the difference map between the results obtained with the exact convolution and the compressed convolution with three beam modes. Right panel: compared to the fiducial power spectrum of the input map (dashed line), the power spectrum of the difference map is subdominant by a large margin on all angular scales.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.