eROSITA Technical Performance
| Basic parameter of the eRosita instruments | ||
| number of mirror systems | 7 | |
| number of nested mirror shells | 54 | |
| HEW (Half energy Width) | 16" (on axis) to ~28" (survey) at 1 keV | |
| energy range | 0.3 - 10 KeV | |
| diameter of 1 mirror system | 358 mm | |
| focal length | 1600 mm | |
| material of mirror shells | nickel | |
| mirror coating | gold | |
| detector principle | framestore pn-CCD | |
| size | 28.8 x 28.8 mm (61 arcmin diameter) | |
| Pixel size | 75 x 75 μm | |
| exposure time per frame | 50 msec | |
| energy resolution | 138 eV at 6 keV | |
| total weight of instrument | 810 kg | |
| Size (diameter / length) | 1.3 m / 2.6 m | |
| power consumption | 550 Watt | |
| mission lifetime | > 7 years | |
Red Curve: the PSF HEW as function of the offaxis angle in pointing mode.
Blue Curve: the PSF HEW within an encircled off-axis angle during a scan. Basically the value at 30′, is the cumulative PSF in the survey.
Blue Curve: the PSF HEW within an encircled off-axis angle during a scan. Basically the value at 30′, is the cumulative PSF in the survey.
The grasp of eROSITA compared with ROSAT-PSPC and XMM-Newton.
Predicted exposure map after the 4-years survey, based on the current mission scenario
eROSITA response matrices based on ground calibration measurements.
eROSITA background document.
© High-Energy Astrophysics Group at MPE