Astrophysics (index)about


(European X-ray Observatory Satellite, HELOS)
(1980s European space x-ray telescope)

EXOSAT was a 1980s space X-ray telescope operated by the European Space Agency. (It has no relation to Exosatellites.) It used Lunar Occultation Observations to add precision to its observations, having been placed in a highly Eccentric orbit to assist in this and to reach high enough that X-rays are unimpeded.

It performed a Slew Survey, with new discoveries designated by the prefix EXO.

EXOEXO 0706.1+5913EXOSATslew survey