Natural weighted radio maps showing the re-reduced VLA 4.7 GHz (left) and 8.44 GHz (right) data. The colour scale is shown on an inverse hyperbolic sine (arcsinh) stretch from − 0.001 to 0.05 Jy beam⁻¹. In the bottom left corner the restoring beam is shown as a white ellipse. This is 0.52″ × 0.42″ with a position angle of 32.2° and 0.36″ × 0.25″ with a position angle of − 86.1°, for the 4.7 and 8.44 GHz maps, respectively.