Map of the possibly contaminating stars, CoRoT 102781750 (upper left), CoRoT 102780084 (upper right) as seen by the CoRoT satellite. (Position of stars contained in the Exo-Dat database and USNO-A2 catalogue are marked by plus signs “+” and crosses “ × ”, respectively). The closer neighbourhoods of CoRoT 102781750 in DSS (lower left) and Konkoly observation (lower right) are shown. The star CoRoT 102781750 is marked by A in each panel. Data of the stars labelled by A-F are given in Table 1.