Optical image of the comet 67P taken just before the beginning of the IRAM observations on 11.198 November 2021. This is a 3.6 min exposure obtained with a 40.7-cm telescope at F/D = 4.3 from Eure-et-Loire (France). North is up. Left panel: Colour image with a field of view of 40 × 40′, showing greenish C₂ coma, dust coma with asymmetry to the lower left and dust tail. Right panel: Grey-scale image after applying a 15° rotational gradient to emphasise the sunward jet to the lower left and dust tail. As in Fig. 2, the inset shows the pole orientation and illumination (in blue) of the nucleus at the time of the observations. The jet orientation (position angle, PA ~ 120°) is intermediate between the sun direction (PA = 99°) and the south pole direction (PA = 154°).