Fig. 2
Sky coverage of imaging campaigns.Black: the optical 1 deg2 CFHTLS D4 field. Orange: the BVRI sky projection as imaged by the WFI. Red: the NIR WIRcam supplementary coverage. Cyan: the NIR observations made at Calar Alto. Blue: XMM-Newton pointings. The dashed circles represent the 2007 study (P.I. K. Nandra) covering the entire D4 in X-rays with ~ 30 − 40ks exposures (Bielby et al. 2010). Green: VLT-FORS2 pointings used for initial detection. The crosses indicate the position of all clusters found.
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