Replacing a technology - The Large Space Telescope and CCDs

Details Replacing a technology - The Large Space Telescope and CCDs Replacing a technology - The Large Space Telescope and CCDs

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ieeep..73.1221s&link_type=abstract

IEEE, Proceedings (ISSN 0018-9219), vol. 73, July 1985, p. 1221-1235.

Astronomy and Astrophysics

Astronomy

Charge Coupled Devices, Hubble Space Telescope, Spaceborne Astronomy, Halley'S Comet, Imaging Techniques, Instrument Packages, Nasa Programs, Photoelectric Cells, Vidicons

Scientific paper

The technological improvements, design choices and mission goals which led to the inclusion of CCD detectors in the wide field camera of the Large Space Telescope (LST) to be launched by the STS are recounted. Consideration of CCD detectors began before CCDs had seen wide astronomical applications. During planning for the ST, in the 1960s, photographic methods and a vidicon were considered, and seemed feasible provided that periodic manual maintenance could be performed. The invention of CCDs was first reported in 1970 and by 1973 the CCDs were receiving significant attention as potential detectors instead of a vidicon, which retained its own technological challenges. The CCD format gained new emphasis when success was achieved in developments for planetary-imaging spacecraft. The rapidity of progress in CCD capabilities, coupled with the continued shortcomings of the vidicon, resulted in a finalized choice for a CCD device by 1977. The decision was also prompted by continuing commercial and military interest in CCDs, which was spurring the development of the technology and improving the sensitivities and reliability while lowering the costs.

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