Selection of other sources in the field. The background images and contours are defined as in Figs. 9 and 14, with the exception of the source in the bottom right panel. This is the brightest source in the field (2.5 Jy) and the high-resolution contours start at 50σ. The colour scale in all images is based on the noise in the image, and runs with a log stretch from −5σ to the maximum contour level.