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Fig. 8


Contrast curve based on differential centroid measurements before and during Wendelstein-1b’s transit for the H band. An image cutout of the star is shown in the top right, extracted from a stacked reference frame that has an overall exposure time of 6367 s. We identify a potential contaminant, marked by a red circle, measured about 6 mag fainter in the H-band at a separation of about 3 arcsec, which was not detected in the Gaia survey. The slight deformation of the star is due to a telescope misalignment which affected all stars in the FOV.

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