Color‐magnitude diagram for 89 objects around PKS 1830−211. The stellar main sequence is seen. When looking at this diagram, one should note that stars toward the Galactic bulge are spread over a broad range of distances, metallicities, and reddenings. The open dots show the stars. The different objects of interest are plotted as larger black dots, such as QSO A, Star P, and Star S1. Star P falls on the stellar main sequence, within the error bars. The data points are not dereddened. The reddening vector is indicated.