Leftpanel: colour-magnitude diagram F153M vs. F105W – F153M. The red dashed parallelogram traces theRC and the red arrows mark an obvious gap in the distribution of the RC stars, which follows the reddening vector. The upper right panel depicts stars from our HAWK-I catalogue in J and K_s with counterpart in the HST data in the first detected bump. Analogously, the lower panel represents stars located in the second bump.