Our data image, model image, and residuals. For the data and model image, contour levels are in steps of [5, 10, 20, 30] × σ (where σ = 56 μJy beam⁻¹, the rms of the image). For our residuals we plot contour levels [−7, −5, −4, −3, 3, 5] × σ (σ = 52 μJy beam⁻¹). Negative values are dashed contours and positive values are solid.