Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984lastr..98..423v&link_type=abstract
L'Astronomie (ISSN 0004-6302), vol. 98, Oct. 1984, p. 423-430. In French.
Astronomy and Astrophysics
Astronomy
Hubble Space Telescope, Spaceborne Telescopes, Design Analysis, European Space Agency, Faint Object Camera, Focal Plane Devices
Scientific paper
The Space Telescope (scheduled for STS launch to a 500-km orbit in 1986) is characterized, and the participation of ESA and of French astronomers in the project is discussed. Of the instruments to be placed in the focal plane of the 2.4-m Ritchey-Chretien reflector, the faint-object camera (FOC) being constructed by ESA is described in detail and illustrated with diagrams. The FOC comprises two independent instruments (f/96 and f/48) with their own filter wheels, photon-counting detectors, and 512 x 512-pixel memories. During the initial months of operation, access to observing time on the Space Telescope is limited to the instrument developers, so that ESA will have 126 hours of FOC time to distribute; later, ESA will distribute its 15 percent of the overall observing time, or about 18 days per year total and 4-5 days/year for French astronomers. The need to develop highly qualified proposals and to undertake adequate preparations is stressed.
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