Left: context submillimeter continuum of the nucleus of 67P mapped at the same time as the HO and HO lines (Figs. 2 and 3). In all maps X and Y refer to the spacecraft coordinates axes, the X-axis pointing in the direction of the Sun; the nucleus center of comet 67P is at the origin of the direction. Intensity contours in brightness temperatures (but assuming η_fss = 1.0) are drawn and the color scale is given on the right. Nucleus brightness temperatures vary from ≈30 K in regions of polar night (lower right, Choukroun et al. 2015) to >160 K in the warmest regions (left side). As a result of its rapid rotation, the nucleus has been smeared during the three hours of mapping. Right: illumination map of the nucleus of 67P as seen from Rosetta at the central time of the observation (12h30 UT). Map based on the Shape 5 model of 67P (Jorda et al. 2015).