The instrument computer of the Halley Multicolor Camera

Details The instrument computer of the Halley Multicolor Camera The instrument computer of the Halley Multicolor Camera

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984dglr.meet.....g&link_type=abstract

Deutsche Gesellschaft für Luft- und Raumfahrt, Jahrestagung, Hamburg, West Germany, Oct. 1-3, 1984. 23 p. In German.

Astronomy and Astrophysics

Astronomy

Astronomical Photography, Cameras, Color Photography, Computer Systems Design, Halley'S Comet, Numerical Control, Data Acquisition, European Space Programs, Focusing, Microprocessors, Nutation, Tracking (Position)

Scientific paper

The operating principle of the Halley Multicolor Camera of the Giotto probe to comet Halley is reviewed, and the hardware and 35-kbyte software of the three-processor computer system developed to control the camera are characterized and illustrated with diagrams. Consideration is given to the overall structure of the hardware, the mailbox-type coupling among the microprocessors, the acquisition and tracking preprocessors, the bulk memory (with capacity for storage of four images), the signal-processing software, the tracking program, the mechanical construction, and the heat losses (totaling 7.2 W at maximum activity levels).

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