eROSITA

In this paper we report on the status of eROSITA (extended ROentgen Survey with an Imaging Telescope Array). eROSITA is the core instrument on the Russian Spektrum-Roentgen-Gamma (SRG) mission which is currently scheduled for launch in 2014. It will perform an all-sky survey lasting four years, followed by a phase of three years for pointed observations. The instrument consists of seven identical Mirror Modules, each equipped with 54 Wolter-I shells with an outer diameter of 360 mm. This provides an effective area of ~1500 cm² at 1.5 keV and an on axis PSF HEW of 15 arcsec resulting in an effective angular resolution of 28 arcsec averaged over the field of view. In the focus of each mirror module, a fast frame-store pn-CCD provides a field of view of 1º in diameter. Meanwhile the telescope structure is completely assembled, more than 60% of all mirror shells are integrated, and almost all subsystems are qualified, tested, and within their specifications.