Fig. 2

Final deep image of the central region of ELAIS-N1 field. Top panel: a wide-field view containing about one third of the total area. Lower panels: zoomed-in regions (each around 0.1 per cent of the full image area), showing the high image quality for extended sources and sensitivity to faint sources. All images are Stokes I, with 6 arcsecs resolution. The full-field image contains more than 85 000 sources.
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