Spatial distribution of stars within the HST pointings of each GC, with coordinates centred on the literature positions according to Mackey & Gilmore (2003b). Blue dashed lines indicate the tidal radius of each cluster, while the red solid circles for Fornax 3 and 4 indicate the region heavily affected by stellar crowding. For clusters 1, 2, 3, and 5 we limit our sample to the WFPC2 PC chip (smaller square coverage), while for Fornax 4 our sample consists of all stars within a radius of 48′′ (see Sect. 3). The representative foreground contamination region is constructed from stars outside the blue tidal radius region, except for Fornax 4, where a radius of 48″ is adopted.