Chandra mosaic of the RMC region (0.5–8 keV) overlaid with source extraction regions derived by ACIS Extract from appropriate Chandra PSFs. Note that these PSFs grow larger in size with increasing off-axis angles. Sources covered by different pointings are represented by polygons of different colors (red: ObsID 1875; green: ObsID 1876; blue: ObsID 1877). Note that some sources have two extraction regions as they lie in the overlapping regions of two observations.