ROSAT (Röntgen Satellite)
A German-American-British X-ray and ultraviolet astronomy satellite, named
for Wilhelm Röntgen who discovered
X-rays; it operated for almost nine years.
The first six months of the mission were dedicated to an all-sky survey
in X-rays (0.1–2.5 keV) and ultraviolet
(62–206 eV) using an imaging telescope with a sensitivity about 1,000
times greater than that achievable with the instruments on Uhuru.
During the subsequent pointed phase of its mission, ROSAT made deep observations
of a wide variety of objects. Its operation ended in Feb. 12, 1999.
||Jun. 1, 1990
||539 × 554 km × 53.0°
AND SPACE PROBES