Intensity in logarithmic scale of a 10 pc distant star and a planet located at 1 AU from it (0.1′′) with a flux ratio of 10¹⁰. The diameter of the telescope is 10 m and the observation wavelength 600 nm. Top: without a nuller coronagraph, bottom: with a nuller coronagraph. The cases of a clear aperture (blue curve) and apodized aperture (red curve) are compared. The dashed curves correspond to the image of the star alone. The gray areas highlight the contributions of the planet.