Sky distribution (in Galactic coordinates) of the bulge sample stars, RPM (green), and RVS (black), above the extinction map covering the Bulge region obtained with results from Anders et al. (2022). Right: zoom-in view of the Baade’s window (black circle). The pencil-beam-like observation of the APOGEE survey is evident in the sky distribution of the targets, while the Gaia spacecraft observes all-sky and covers a much larger area.