High resolution Hess diagrams from two different spatial regions. Left: central parts of Sextans (MFM signal filter). Right: pointing #8 (MFM contamination filter). Stars redder than g−r = 1 (black vertical line) were excluded from the analysis. Black contours: window defined to exclude most contaminants. Hess diagrams are colour-coded according to the probability of finding a star with a given mag and colour.