Examples of the raw (first and third rows, linear colour scaling) and processed (second and fourth rows, Lupton et al. (2004) non-linear colour scaling) EAGLE images for merging (first and second rows) and non-merging (third and fourth rows) systems. The raw images shown are 128 × 128 pixels and imaged at 10 Mpc, corresponding to a physical size of 30 × 30 kpc or an angular size of 621 × 621 arcsec, while the processed images are 64 × 64 pixel images corresponding to an angular size of 25.3 × 25.3 arcsec. The redshifts are those that the EAGLE images have been projected to.