Stacked images of the IHL. Left: S/N-weighted average, stacked image of the IHL in F356W, F410M and F444W, normalised to the F444W flux density, with 3 pixel Gaussian smoothing. The smaller red circle shows the aperture used for the peak measurement in the individual bands, and the larger red ellipse shows the aperture in which the core IHL F444W flux density was measured on this stacked image, in order to estimate the total IHL stellar mass in the core of the group. Right: adaptively smoothed stacked image.