Citations per year

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Abstract: (ADS)
The Einstein (HEAO 2) X-ray Observatory, launched in 1978, includes a fully imaging focusing X-ray telescope with an angular resolution of a few arc sec, a field of view of up to one deg, and a sensitivity several hundred times greater than previously available in any X-ray astronomy experiment. A high-resolution imager, an imaging proportional counter, a focal plane crystal spectrometer, and a monitor proportional counter are among the principal instruments on board the Einstein X-ray Observatory. About 20% of the total effective observing time in the first year of the X-ray astronomy experiment has been reserved for guest observers.
      • Proc.SPIE Int.Soc.Opt.Eng. 106 154
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      • Astrophys.J. 185 L47
      • Proc.SPIE Int.Soc.Opt.Eng. 106 136