Colour magnitude diagram showing cluster members in black triangles while all sources in the search area are shown in grey. The cluster members along the giant branch are shown in orange while those shown as blue squares are the BSSs. The two dark red squares are BSSs identified by Ahumada & Lapasset (2007) and re-identified in this work. The 12 giants from Scott et al. (1995) are shown in green and are re-identified as cluster members in this work. The six stars with spectrophotometric data from GDR2 are circled in black. The PARSEC isochrone, shown with a black solid line, corresponds to the adopted age and metallicity of Be17.