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Title:
The Einstein /HEAO 2/ X-ray Observatory
Authors:
Giacconi, R.; Branduardi, G.; Briel, U.; Epstein, A.; Fabricant, D.; Feigelson, E.; Forman, W.; Gorenstein, P.; Grindlay, J.; Gursky, H.; Harnden, F. R.; Henry, J. P.; Jones, C.; Kellogg, E.; Koch, D.; Murray, S.; Schreier, E.; Seward, F.; Tananbaum, H.; Topka, K.; Van Speybroeck, L.; Holt, S. S.; Becker, R. H.; Boldt, E. A.; Serlemitsos, P. J.; Clark, G.; Canizares, C.; Markert, T.; Novick, R.; Helfand, D.; Long, K.
Affiliation:
AA(Harvard-Smithsonian Center for Astrophysics, Cambridge, Mass.), AB(Harvard-Smithsonian Center for Astrophysics, Cambridge, Mass.), AC(Harvard-Smithsonian Center for Astrophysics, Cambridge, Mass.), AD(Harvard-Smithsonian Center for Astrophysics, Cambridge, Mass.), AE(Harvard-Smithsonian Center for Astrophysics, Cambridge, Mass.), AF(Harvard-Smithsonian Center for Astrophysics, Cambridge, Mass.), AG(NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt, Md.), AH(NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt, Md.), AI(NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt, Md.), AJ(NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt, Md.)
Publication:
Astrophysical Journal, Part 1, vol. 230, June 1, 1979, p. 540-550. (ApJ Homepage)
Publication Date:
06/1979
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
Heao 2, Spaceborne Astronomy, X Ray Astronomy, Cameras, Focal Plane Devices, High Resolution, Proportional Counters, Spaceborne Telescopes, Spacecraft Instruments, Spectrometers
DOI:
10.1086/157110
Bibliographic Code:
1979ApJ...230..540G

Abstract

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.

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