Light curve of XMM-Newton EPIC-pn observation of CAL 87 at 0.2−10 keV, binned with 200 s per bin. The blue lines show the time intervals in which we extracted the out-of-eclipse spectra, and the blue lines show the time intervals in which we extracted the in-eclipse spectra. For the comparison we neglected the spectrum observed in a 2100 s interval at the beginning and end of the eclipses.