Distribution of J-band magnitudes from HAWK-I in the MUSE field (Preibisch et al. 2011a,b). The dark berry-coloured histogram shows all HAWK-I measurements taken in the same area that was covered by MUSE. The violet distribution presents point source detections from Sect. 2.2.6, (upper panel) and in combination with the one excluded due to the high background variation and foreground stars (lower panel). In both panels, the grey line shows the completeness of our catalogue, defined as a ratio of the number of stars in a given magnitude bin (0.5 mag wide) in our catalogue and in the HAWK-I catalogue.