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ROSAT: Caption, Credits and Copyright
ROSAT, the Roentgen Satellite, is an X-ray observatory developed through a cooperative program between Germany, the United States, and the United Kingdom. The satellite was designed and is operated by Germany, and was launched by the United States on June
Power is supplied through 3 solar panels providing 1 kW of power during Sun-lit parts of the orbit, and through a rechargeable battery during the shadow phase (spacecraft night, up to 40 minutes per orbit).
The scientific payload consists two co-aligned scientific experiments:
ROSAT provides a ~ 2 degree diameter field of view with the PSPC in the focal plane, and ~ 40 arcmin diameter field of view with the HRI in the focal plane.
- the X-Ray Telescope, which is used in conjunction with one of the focal plane instruments -- the Position Sensitive Proportional Counter (PSPC) or the High Resolution Imager (HRI) and
- the Wide Field Camera (WFC), which has its own mirror system and star sensor.
The ROSAT mission began with a six-month, all-sky PSPC survey, after which the satellite began a series of pointed observations that will continue for the duration of the project. After four years of successful operation,
the PSPC instrument ran out of gas and consequently future observations are only available with the HRI and WFC.
More information can be found at the ROSAT Science Data Center (http://hea-www.harvard.edu/rosat/rsdc_www/ros_welcome.html)
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Copyright, (c) 1995: Board of Trustees, University of
NCSA. Last modified 11/2/95.