eROSITA – “extended ROentgen Survey with an Imaging Telescope Array” is a X-ray telescope designed by MPE, Germany, the main SRG scientific instrument.
PI of the telescope – Dr. Peter Predehl, MPE, Germany.
More information are available on official eROSITA site.
Main scientific objectives of eROSITA
- Perform all-sky survey in soft 0.5-2 keV and hard 2-10 keV bands with unprecedented sensitivity
- Discover and study about 100 thousands galactic clusters, bringing out all massive galactic clusters in observable Universe
- Unveil 3 millions active galactic nuclei, providing large samples for statistical studies and also making visible the three-dimensional structure of Universe
- Explore properties of peculiar Galactic sources: single neutron stars, supernova remnants, X-ray binaries, coronal active stars and protostars.
|Number of mirror modules||7|
|Number of mirror shells per each module||54|
|Mirror shell diameter||76–358 mm|
|Mirror shell length||300 mm|
|Angular resolution (HEW, Half energy Width)||18″ (on-axis) to ~28″ (survey) at 1 keV|
|Field of view||0.81 sq. degrees|
|Energy range||0.3–11 keV|
|Focal length||1600 mm|
|Detector dimensions, mm||28.8 x 28.8 mm|
|Pixel size||75 x 75 µm|
|Energy resolution||138 eV at 6 keV|
|Telescope diameter/length||1.3 m / 2.6 m|
|Detector operating temperature||-95 C|
Scientific information of the Russian consortium
Science with eROSITA