Fig. 2
Left: image of the entire mosaic of the XMM-ATLAS observations in the 0.5−8 keV band. The greyscale wedge shows the photon counts (truncated; the actual maximum is 117 counts). A Gaussian smoothing with 20″ radius was applied to enhance the sources. Some areas with longer exposure times and/or higher background are visible. Right: exposure map in the 0.5−8 keV band. The greyscale wedge (maximum value: 33.9 ks) shows the sum of the MOS1, MOS2 and PN exposure times in s, corrected for vignetting and bad pixels.
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