Fig. 5.
Noise image of the LoTSS-DR1 where the median noise level is 71 μJy beam−1. As described in Sect. 3.4 many of the regions with high noise levels are caused by dynamic-range limitations. Sources from the revised 3C catalogue of radio sources (Bennett 1962) are overplotted as black circles to show the location of potentially problematic objects.
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