Pressemappe zur ersten vollständigen Himmelsdurchmusterung von eROSITA

19. Juni 2020

Zusätzliche Bilder von der ersten vollständigen Himmeldurchmusterung durch das Röntgenteleskop eROSITA.
Sie dürfen diese Bilder gerne für Ihre Berichterstattung über eROSITA verwenden - bitte geben Sie die passende Bildquelle an (siehe Bildunterschriften).

eROSITA Factsheet

eROSITA Telescope:

Start of the project: 1 April 2007 (DLR funding approved)

SRG Mission adoption: 18 August 2009 (contract signed between DLR and Roscosmos)

Mirror modules: 7 (with 54 mirror shells each)

Mirror shell smoothness: ~0.3 nm

Cameras: 7 pnCCDs with 384 x 384 pixels each

Field of view: ~ 1 degree in diameter

Operating temperature: around -85°C

Energy range: 0.2-8 keV

Launch: 13 July 2019

Start of camera commissioning: 22 August 2019

Start of operation of all 7 cameras: 13 October 2019

Orbit: Halo orbit around L2

Spacecraft: Spectrum-Roentgen-Gamma (together with ART-XC telescope)

 

eRASS-1: First SRG/eROSITA All-Sky Survey

Start: 13 December 2019

Completed:  11 June 2020

Days to complete all-sky image: 182

Data downloaded (eROSITA only): ~165Gb

Number of commands issued (eROSITA only): >15000 (TBD)

Photons collected: ~400 million (in the energy range 0.12-5 keV)

Average exposure: 180 seconds

Sources detected: 1.1 Million

Approximate break-down of sources:

  • 77% Active Galactic Nuclei
  • 20% stars with strong, magnetically active hot coronae
  • 2 % clusters of galaxies
  • others: bright X-ray binaries, supernova remnants, extended star forming regions, transient (e.g. Gamma-Ray Bursts)

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