Three in-beam sources detected both at 1.4 GHz and 150 MHz, after applying the shift derived from 1534+2326 (left panel) and 1534+2333 (right panel) to all sources. Red contours show VLA 1.4 GHz as [−5, 5, 10, 20, 40, 80, 160, 320, 640] × 0.05 mJy beam^-1, and black contours show LOFAR 150 MHz as [−5, 5, 10, 20, 40, 80, 160] × 0.15 mJy beam^-1. The black arrow shows the direction towards Arp 220 with the respective angular distance at the tip. The middle source is clearly affected by smearing at 150 MHz, and was therefore not included in the alignment as described in the text. The CLEAN restoring beams of VLA (red: ) and LOFAR (black: ) are shown in the lower left.