Overview of the K2 C05 superstamp coverage of M 67. The upper panel shows one superstamp image on a logarithmic gray-scale. Stars recognized by GDR3 are overplotted, color-coded according to our membership evaluation (see Sect. 2.2 and Appendix A for details). The lower panel shows a DSS2 (red channel) image of the same region. The extent of the superstamp is indicated in red. The small inset in the corner shows the location of the superstamp in the Kepler FOV C05. Both panels are shown such that their orientations are as similar as possible (see coordinates in panel b).