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The ROSAT Mission

mpe.mpg.de/ROSAT Geographic & Mapping Data Website

The ROSAT mission page describes the German-US-UK X-ray observatory and its imaging telescopes operating in X-ray and extreme ultraviolet ranges.

Visit The ROSAT Mission
mpe.mpg.de/ROSAT
The ROSAT Mission homepage screenshot

About The ROSAT Mission

The ROSAT mission page documents the German-US-UK Röntgen Satellite X-ray observatory, launched on June 1, 1990 into a 550 km circular orbit. It carried two imaging telescopes for soft X-ray (0.1-2.4 keV) and EUV (0.06-0.2 keV) observations.

ROSAT performed the first all-sky surveys with imaging telescopes, identifying 125,000 X-ray and 479 EUV sources, and also carried out pointed observations covering 4,580 PSPC and 4,482 HRI fields. The mission was switched off in February 1999 after 8.5 years; all ROSAT data are calibrated and available through an online archive.

Key features

  • Two imaging telescopes for soft X-ray and EUV observations
  • Soft X-ray range: 0.1-2.4 keV
  • EUV range: 0.06-0.2 keV
  • All-sky surveys found 125,000 X-ray and 479 EUV sources
  • Pointed observations covered 4,580 PSPC and 4,482 HRI fields
  • Calibrated data available via an online archive
Best for: Researchers, students, and historians interested in ROSAT's X-ray and EUV mission data or archived all-sky survey results.
Good for
  • All ROSAT data are calibrated and available via an on-line archive.
  • Covers all-sky surveys, pointed observations, and source counts.
  • Provides mission, instrument, and data center details.
Watch out for
  • Mission ended in February 1999; no ongoing observations are described.
  • Publication count is dated August 2001, so it is not current.

The ROSAT Mission at a glance

Type
Website
Pricing
Not confirmed. Check the site
Platforms
Web
Open source
Not stated
Language
English
Last checked
Oct 6, 2026 · Online when checked
Listed
Oct 5, 2026

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The ROSAT Mission FAQ

When was ROSAT launched and when did it stop operating?
ROSAT launched on June 1, 1990 into a 550 km circular orbit and was switched off in February 1999 after 8.5 years.
What were ROSAT's main instruments?
It carried two imaging telescopes: a soft X-ray telescope (0.1-2.4 keV) and an EUV telescope (0.06-0.2 keV), with PSPC, HRI, and channel plate detectors.
Are ROSAT data available for use?
All ROSAT data are calibrated and available via an on-line archive; prime data centers are at MPE Garching and the University of Leicester, with mirror sites at Goddard and other institutions.
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Listing maintained by Chris McClure and the WebIndexly editors · Updated Oct 11, 2026 · How we rank