Sky distribution of the XXL pointings that passed the selection criteria for the construction of the cluster sample. The dashed circles represent the area used for cluster detection on each pointing, i.e. a 13′ radius around the average optical axis. The location of the members of the bright XXL cluster sample is shown with blue dots, whose size is proportional to their 60′′ aperture flux. The ~1 deg2 area located around RA = 34.5 and Dec = – 5, is the Subaru Deep Survey, whose position was selected for its lack of bright X-ray sources.
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