RGB colour image of the central 4^′ × 4^′ of RCS2 J2327 created from the VLT/HAWK-I K_s best-seeing stack and the HST/ACS F814W and F435W images. The contours indicate the weak lensing convergence reconstruction starting at κ₀ = 0.04 in steps of Δκ = 0.04 with the peak indicated by the white hexagon. The magenta star, red square, and cyan circle indicate the locations of the BCG, the peak in the X-ray emission, and the strong lensing centre from Sharon et al. (2015), respectively.