We identify the largest known lensed images of a single spiral galaxy, lying close to the centre of the distant cluster MACS J1149.5+2223 (z = 0.544). These images cover a total area of ≃ 150 2 and are magnified ≃ 200 times. Unusually, there is very little image distortion implying the central mass distribution is almost uniform over a wide area (r ≃ 200 kpc) with a surface density equal to the...
