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Fig. 9.


Low-resolution (beam: 209″ × 144″) image of the Toothbrush cluster field after subtraction of mid-resolution sources in the main beam. The only visible sources are those present in the first side-lobe and some extended emission that was not fully subtracted from the high-resolution map. The red circle is an estimation of the first null at mid-frequency (≈2 ⋅ FWHM). Sources outside the circle are subtracted at the end of the first selfcal cycle. Stripes in the background are due to Taurus A, which is at a distance of 22° and which was not demixed.

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