Top: visible-light “true-color” and infrared (0.9−2.5 μm) images of NGC 1365, obtained with ESO’s VLT (ESO/P. Grosböl). Bottom: 70 μm and 160 μm Herschel PACS images of NGC 1365 (beam sizes and ; Alonso-Herrero et al. 2012) on which are superimposed the high- and low-frequency beams (20″ and 40″, respectively, dashed circles) of the SPIRE spectrometer for the two sets of observations (toward the NE and southwest (SW) positions, see Sect. 2.1) and the resultant beam (140″ × 160″, solid ellipse) of the Odin observations. The crosses, from top to bottom (in decreasing declination), represent the “hot spot” H II regions L4, L11, L12, L1, L3, and L2 (Alloin et al. 1981). The equatorial offsets are with respect to the optical nucleus, which is marked with a green asterisk.