Colour composite image of HCG 22 with Keck B and R-band (Da Rocha et al. 2002) and HST/WFPC2 F450W, F606W and F814W filters. A zoom in (20 × 20′′) showing the dust lane in NGC 1199 can be seen in the upper left corner. As in Fig. 1, blue diamonds indicate the targeted objects in our masks and red circles indicate the HCG compact members. Field of view is 7 × 5′.

Colour composite image of HCG 90 with FORS B, V and R-band and HST/ACS F475W and F850LP filters. A zoom in () showing the interacting pair NGC 7174/7176 can be seen in the upper right corner. As in Fig. 1, blue diamonds indicate the targeted objects in our masks and red circles indicate the HCG compact members detected. Field of view is 7 × 7′.