Pseudo-RGB colour image of the MUSE field of view (FoV) of NGC 3603 generated from the datacube, superposed on a POSS2-red image from the Digitized Sky Survey (DSS). North is up and east is to the left. Each side of MUSE FoV is approximately 1 arcmin (corresponding to 2 pc at the distance of 7 kpc). The core of the cluster lies just outside the FoV in the north-north-west direction and was intentionally missed in the observations to avoid severe crowding. Red corresponds to Hα and blue and green correspond to the continuum at 4700 and 5500 Å, respectively. The stars whose spectra are shown in Fig. 3 are indicated with their identification numbers, based on the WEBDA catalogue.