The contributions of Ruimteonderzoek Utrecht to Hipparcos

Astronomy and Astrophysics – Astronomy

Scientific paper

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European Space Programs, Hipparcos Satellite, Satellite-Borne Instruments, Spaceborne Astronomy, Calibrating, Equipment Specifications, Fabrication, In-Flight Monitoring, Netherlands

Scientific paper

The development of the detector subsystem for the ESA Hipparcos astrometric satellite at the Utrecht space-research laboratory and plans for its calibration are reviewed. The major components of the detector subsystem include the main detector assembly, the image-dissector tube, the star-mapper detector assembly, and the detection electronics box. The technical specifications for these components are listed in a table, and consideration is given to the design concept, fabrication, and testing. The photometric and geometric calibration of the instruments is to be based on a 12-h set of observational data; sample estimates of the accuracy obtainable are discussed.

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