RGB SB map of the system, as viewed from our direction (left), as well as from the point of view of a fictional observer located at 90° with respect to us. Photons escaping in the wavelength regions  [1210,1215.25]  Å,  [1215.25,1215.75]  Å, and  [1215.75,1222]  Å are displayed in blue, green, and red, respectively. The image is centred on the centre of the galaxy (green asterisk, observationally given by the O iii  emission), and the position of the QSO is marked by a black plus sign. The positions on the sky of the red and blue photons of J1135−0010  as inferred from triangulation are indicated by the red and blue crosses, respectively. The axis scale is in kpc.