Location of the Hawk-I pointings overlaid on the exposure map of the WFC3 data available within the GOODS-South field. Magenta lines show the field-of-view of pointings D1 and D2, while the green lines show pointings W1, W2, W3 and W4 (see Table2). The black square at the centre is the HUDF12 region (Koekemoer et al. 2013). The greyscale of the WFC3/IR images is on a linear stretch that saturates at the deepest levels of the CANDELS data; the HUDF12 is deeply oversaturated.