I_E versus I_E-H_E color-magnitude diagram of all sources within the FoV of NGC 6822 after applying the selection cuts described in Sect. 5.1 and illustrated in Fig. 8 and after correction for foreground extinction (Sect. 5.2). Yellow points indicate bright MW and background galaxy contaminants, namely sources cross-matched with the Gaia DR3 catalog that have a measured proper motion PM larger than 3σPM. The vertical feature at I_E - H_E ≃ 1.3, I_E ≳ 21 is due to the M dwarf population of the MW.