Same as Fig. 1 for the HD 189733 field at 150 MHz. The half-power beamwidth is 18″ × 13″at a position angle of 70°. In the left panel the contour levels are at 3.0, 4.2, and 6.0 times the image rms of 750 μJy per beam^-1. In the right panel the contour levels are at 2.0, 2.8, and 4.0 times the center field rms of 690 μJy per beam^-1, showing the 2.7-σ source at 13″ from HD 189733 to the south east of the target position (see text).