Scanning with charge-coupled devices

Details Scanning with charge-coupled devices Scanning with charge-coupled devices

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ssrv...58..347g&link_type=abstract

Space Science Reviews (ISSN 0038-6308), vol. 58, no. 3-4, 1991, p. 347-375. Research supported by NASA, USAF, DARPA, et al.

Astronomy and Astrophysics

Astronomy

42

Charge Coupled Devices, Optical Scanners, Spaceborne Telescopes, Asteroids, Brown Dwarf Stars, Comets, Cosmic Rays, Gamma Ray Bursts, Spaceborne Astronomy

Scientific paper

Results are presented of an investigation of six modes of using CCDs for searches of gamma-ray bursters, debris in geosynchronous space, satellites of asteroids, brown dwarfs, the tenth planet, comets, cometesimals, and various types of asteroids. A new discipline in astrophysics, 'scannerscopy', i.e., surveying with a CCD rather than with photography at a Schmidt telescope, is described. It uses the CCD in scanning rather than in sequencing of stare exposures as is done at most observatories, which can save telescope time and obviates the need for flat-fielding. Attention is given to the Tektronix 2048 x 2048 CCD, 38 arcmin wide, which is used to a limiting magnitude of 20.5 V. It is also shown to be successful for discovering rare and small near-earth asteroids. Possibilities with cameras on spacecraft that pass through the asteroid belt are described.

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