Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.253..364p&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 253, Nov. 15, 1991, p. 364-368. Research supported by S
Astronomy and Astrophysics
Astronomy
16
Extreme Ultraviolet Radiation, Rosat Mission, Space Surveillance (Spaceborne), Ultraviolet Astronomy, Cameras, Spaceborne Telescopes, Ultraviolet Telescopes, X Ray Telescopes
Scientific paper
Following a successful launch on 1990 June 1, the Rosat spacecraft and its payload, consisting of an X-ray and an EUV telescope, underwent two months of in-orbit calibration and detailed performance checks. A preliminary observation of a small section of the sky, carried out over July 11-16 (the 'mini-survey') showed all Rosat systems to be functioning well and has allowed predictions to be made on the ultimate productivity of both Rosat all-sky surveys. An analysis of the mini-survey data from the UK Wide Field Camera, has revealed 35 EUV sources, including several white dwarf stars, a variety of active cool stars and several other objects. In all, 23 sources have probable optical counterparts. Consideration of the effective exposure and sky coverage in the mini-survey allows the prediction that the recently completed Rosat all-sky survey will yield in excess of a thousand new EUV sources.
Abbey Anthony F.
Barstow Martin Adrian
Bentley Robert D.
Bewick A.
Breeveld Eddie R.
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