NGC 628 observed at 8.35 GHz with the Effelsberg 100-m telescope at a resolution of 81″. Left image: total intensity of NGC 628 with contours representing 3, 5, 8, 10, 12, 14, 15 × 30 μJy/beam. Right image: linearly polarised intensity of NGC 628 with contours representing 3, 4, 5, 8 × 60 μJy/beam. The vectors show E + 90°, not corrected for Faraday rotation, which is very small at this frequency. All vectors are plotted with the same length.