Fig. 8

Average and difference aperture mass ℳ ± (Eq. (8)), measured in the matched MMT-CFHT catalogue. The grey-scale and white contours give ℳ−, the thicker blue contours show ℳ+. The spacing for both contours is in multiples of 0.015, starting at 0. Black circles mark the positions of CL 1701+6414 and A 2246.
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