EPIC pn images of the three XMM observations. From top to bottom: ObsID 0844101101, 0932190801, and 0932191001 (0.3–12 keV). The black circles (1′ radius) mark the position of IGR J17503-2636 and IGR J17507-2647. Arches on the right of each image are due to stray light contamination by a bright source located outside the FoV, probably GX 3+1. Equatorial coordinates (J2000) are reported.