Computer Science
Scientific paper
Oct 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983dglr.meet.....g&link_type=abstract
Deutsche Gesellschaft für Luft- und Raumfahrt, Jahrestagung, Munich, West Germany, Oct. 17-19, 1983. 31 p. In German.
Computer Science
Cameras, Color Photography, Giotto Mission, Halley'S Comet, Spaceborne Photography, Systems Engineering, Charge Coupled Devices, Comet Nuclei, Computerized Simulation, Data Acquisition, Focal Plane Devices, Photometers, Trajectory Analysis
Scientific paper
The design and testing of the acquisition program for the Halley Multicolor Camera (HMC) to be flown on the Giotto mission to Halley's comet (scheduled a launch by Ariane in July, 1985) one reported. The HMC comprises a 1-m telescope with an aspect angle of 0.573 deg and a masked-CCD-array photodetector and will observe the surface of the comet nucleus from 1000 km with a resolution of 3 m/pixel; the acquisition-mode sensor is a Reticon with aspect angle 1.6 deg. The acquisition process is examined analytically: the trajectory of the comet image in the focal plane is described, and a technique is developed to determine the comet parameters by correlating the coordinates of 'hits' on the Reticon. The structure of the acquisition program is explained, and the results of a computer simulation are presented graphically.
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