Fig. 1

Images of the disc around HR 4796 A from IRDIS in the H-band, reduced with three different reduction algorithms: cADI, masked cADI and PCA (first five eigenmodes removed). North is up, east to the left. The colour scale is identical for all three reductions. The black region along the semi-minor axis of the mcADI image corresponds to region were the disc is entirely self-subracted therefore no information can be retrieved.
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