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EXOSAT

(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.


(spacecraft,telescope,x-ray,ESA,European,past)
http://en.wikipedia.org/wiki/EXOSAT
http://www.esa.int/Our_Activities/Space_Science/Exosat_overview
https://www.cosmos.esa.int/web/exosat/exosat-me-slew-survey
PrefixExampleSurvey/Catalog 
EXOEXO 0706.1+5913EXOSATslew survey

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