ISGRI significance image of η Car close to periastron (on the left) and outside periastron (on the right). Both images are in equatorial coordinates, cover the same energy range (17–80 keV), and use the same colourmap (significance goes from 2σ to 7σ). The positions of η Car and 1E 1048.1-5937 are indicated by the white and black crosses. The white and black circles represent the best-fit positions listed in Table 2.