Scanning the heavens in great circles that pass through the north and south ecliptic poles, the German-built X-ray telescope imaged much fainter objects and achieved an angular resolution three times greater than the orbiting Einstein Observatory, which conducted a smaller X-ray imaging survey in 1979.
The Vela supernova remnant has puzzled astronomers ever since the Einstein Observatory detected its X-ray emissions.
Only 38 of these sources -- eight of them globular clusters -- appeared in observations by the orbiting Einstein Observatory
in 1979 (image on right), note Francis A.
Identified as an ordinary X-ray source more than a decade ago by the orbiting Einstein Observatory
, this Milky Way resident recently began drawing special attention.
Using observations of the Imaging Proportional Counter on the Einstein Observatory
satellite, they found first that the intensity of X-ray halos represents an amount of dust consistent with what astrophysicists had calculated from the observed absorption of visible light.