Fig. 1

Frequency-averaged Stokes I image of the 3C 196 region, based on the four nights of data taken in December 2012. The image is 8.3° × 8.3° in size, with a PSF of 45′′, and the noise level is 170 μJy PSF-1. The nine bright sources towards which we performed direction-dependent calibration are indicated with red circles. The 3C 196 source is subtracted from direction-independent calibrated visibilities, while eight other sources are not. A location of the discovered pulsar J081558+461155 (see Sect. 3.3) is shown with a blue asterisk. The image is de-convolved using the CLEAN algorithm implemented in CASA.
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