All-sky Aitoff projection in Galactic coordinates, showing the formal constraints for the selection of the PLATO LOP fields and the synergies with other transit-finding missions. The two pink circles represent the |β| > 63° technicalrequirement for the center of the LOP fields (“allowed region”), implying that the overall envelopes of every allowed field choice are two ecliptic caps at |β| ≳ 38° (green circles). As a reference, the previous provisional choices for the LOP fields, here called LOPN0 and LOPS0, are plotted with blue shades according to the number of co-pointing cameras (refer to Fig. 1 for details). The footprints of CoRoT (red), Kepler (magenta), and K2 (green) are over-plotted together with the TESS continuous viewing zone at |β| ≳ 78° (yellow circle). The background gray layer is color-coded according to the areal density of G < 13.5 stars from Gaia EDR3. The celestial equator and poles are marked with a red circle and crosses, respectively.