Total intensity images of 3C 111 for the May 8, 2014, observation produced in natural weighting. In each panel the restoring beam is plotted as a white ellipse in the bottom left corner and a size scale reference of 1 pc is plotted in the top right corner. Starting from Fig. 1a, in each image, there is a colored box representing the size of the following frequency image. The frequencies are color-coded from the lowest (5 GHz) to the highest (87.6 GHz), going from red to blue. (a) 3C 111 total intensity image at 5 GHz. The beam size is 3.06 mas × 1.93 mas at −7°, the pixel size is 0.08 mas, the peak is 1.80 Jy/beam, the total intensity is 2.94 Jy, the rms is 0.21 mJy/beam, and contours are at −0.03, 0.03, 0.07, 0.18, 0.43, 1.05, 2.56, 6.23, 15.18, 36.96, 90.0% of the peak. (b) 3C 111 total intensity image at 8.4 GHz. The beam size is 1.78 mas × 1.13 mas at −11°, the pixel size is 0.04 mas, the peak is 2.28 Jy/beam, the total intensity is 3.84 Jy, the rms is 0.19 mJy/beam, and contours are at −0.04, 0.04, 0.09, 0.22, 0.52, 1.23, 2.9, 6.84, 16.15, 38.12, 90.0% of the peak. (c) 3C 111 total intensity image at 15.2 GHz. The beam size is 0.97 mas × 0.60 mas at −14°, the pixel size is 0.04 mas, the peak is 1.46 Jy/beam, the total intensity is 3.49 Jy, the rms is 0.23 mJy/beam, and contours are at −0.06, 0.06, 0.14, 0.31, 0.7, 1.57, 3.53, 7.94, 17.83, 40.06, 90.0% of the peak. (d) 3C 111 total intensity image at 21.9 GHz. The beam size is 0.79 mas × 0.51 mas at −13°, the pixel size is 0.02 mas, the peak is 1.31 Jy/beam, the total intensity is 3.33 Jy, the rms is 0.46 mJy/beam, and contours are at −0.15, 0.15, 0.3, 0.62, 1.26, 2.57, 5.23, 10.65, 21.69, 44.18, 90.0% of the peak. (e) 3C 111 total intensity image at 43.8 GHz. The beam size is 0.49 mas × 0.26 mas at −26°, the pixel size is 0.02 mas, the peak is 1.31 Jy/beam, the total intensity is 2.66 Jy, the rms is 1.14 mJy/beam, and contours are at −0.34, 0.34, 0.64, 1.18, 2.2, 4.08, 7.57, 14.06, 26.1, 48.47, 90.0% of the peak. (f) 3C 111 total intensity image at 87.6 GHz. The beam size is 0.43 mas × 0.22 mas at 77°, the pixel size is 0.02 mas, the peak is 0.89 Jy/beam, the total intensity is 1.18 Jy, the rms is 2.13 mJy/beam, and contours are at −0.84, 0.84, 1.42, 2.38, 4.0, 6.72, 11.29, 18.97, 31.88, 53.56, 90.0% of the peak.