Fig. 1
Magnification map of A1689 overlaid on top of an HST ACS image of the cluster. The Δm = 1,2,3 mag (pink, blue, magenta) contours are shown for a source at z = 2. The green (orange) circles indicate the positions of strongly lensed galaxies with spectroscopic redshifts and time delays shorter than (above) five years. Red points indicate strongly lensed sources with photometric redshifts.
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