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Fig. A.2

image

Comparison of a coronagraphic exposure before (top) and after (bottom) the subtraction of the telescope polarisation ptel. The images show the polarised intensity Q of a combined pair of one single zero-phase and one π-phase (2 × 1.2 s) exposure of α Cen A in the N_R filter. The axes are in arc seconds and the colour scale is in ADU.

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