Top: amplitudes of the Fourier modes of the ALMA map. The spatial scales probed by the 12-m and 7-m arrays are indicated with vertical lines. The size range of the identified cores is shown with a horizontal line. The mean spectrum is shown with a solid red line and the standard deviation with dotted red lines. For visibility, only data points above 25′′are shown; at smaller scales the grey scale shows the density of data points. Bottom: rms noise measured in the Fourier domain, i.e., 1 /Nσ_rms,F(Θ). The dotted line shows the 3σ_rms,F(Θ) value. The horizontal lines show one (solid line) and three times (dotted line) the standard deviation measured from an apparently empty region of the ALMA map, i.e., σ_rms. The dashed vertical line indicates the beam size. The plusses indicate the 43 compact objects identified from the ALMA map; the y-position is determined by the peak flux and the x-position by the geometric radius of the objects.