Fig. 1
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Hammer–Aitoff sky map showing the HEGS clusters (dark green areas). The central grey band shows the regions with |b| < 10° that are discarded in this work. The other grey areas show the rest of discarded regions (see text). The blue areas denote the part of the sky not observable by H.E.S.S., due to the zenith angles for observing these regions being above 60°.
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