Colour–magnitude diagram showing the positions of Sgr dSph members (red), Galactic foreground stars (blue) and stars of indeterminate location (green) observed with the VLT, overlaid on a density plot of 2MASS sources on a logarithmic grey-scale. Circled objects highlight stars with velocities co-incident with the Sgr dSph, but colours that are not. These may be metal-poor or post-AGB member stars.