Fig. 1

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Illustration of drift scan observations. The red dot represents the centre of the PAF at the position of CygA. The numbered circles represent the positions of the 40 CBs (the diameter of the circles is 0.6 deg). The blue lines represent the 33 individual drifts across the field of view of the Apertif footprint, where the grey triangles mark the starting position of each individual drift.
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