eROSITA technical information

The technical characteristics of eROSITA have remained essentially unchanged since its launch in July 2019. The only new addition is the in-flight calibration. The other information provided is the same as for the Early Data Release (EDR).


Mirrors and CCD cameras


eROSITA on-ground calibration


eROSITA in-flight calibration


Pattern fractions


Processing modes

The processing mode used during eRASS1 observations is PMENV2.