Fig. 1

Circles show the 45 mosaic pointings for three adjacent tiles centered on 33.5, 34.75, and 36.0 degrees Galactic longitude in red, black, and cyan, respectively. The circle diameters of 30′ correspond to the primary beam at 1.5 GHz, and the pointings are separated by 15′. The underlying image presents the THOR+VGPS continuum data at 1.4 GHz converted into a temperature scale in K using the Rayleigh-Jeans approximation.
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