Fig. 15
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Apertif/NVSS Flux ratio maps with four different sets of compound beam maps (190912, 200130, 201028 (Cas A) averaged Gaussian maps). The black dashed circle has a radius of 36′, which depicts the average FWHM for the Apertif compound beams. The drift scan based maps clearly show on average higher flux ratios to the south-west side of the beams.
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