Sample NACO 1.28 μm (top row) and SPHERE/ZIMPOL V band (bottom row) images of Achernar A and B. The panels show both stars with A centered in the field of view and a logarithmic intensity scale. The right images show the result of the subtraction of the radial median profile of the left image. The NACO image has been resampled by a factor four, resulting in the same pixel scale as the ZIMPOL image (3.315 mas pix⁻¹). The position of A is marked with a black “+” symbol in the left images and the position of B is shown with a white circle.