Left: 33 GHz continuum map of M 51 from the VLA at 3″ (125 pc) resolution. The white circles indicate the area affected by the AGN, which we exclude from the analysis. Right: Spitzer/MIPS 24 μm image from Dumas et al. (2011), who deconvolved the PSF, resulting in a map of comparable resolution. The overplotted yellow contours are from the 33 GHz map (levels [3,6,12] mK). The intensity scales of both maps correspond to similar SFR values. The field of view is 300″ × 250″ (∼11 × 9 kpc), with the horizontal axis corresponding to right ascension (east to the left) and the vertical axis to declination (north up), relative to J2000.