Hipparcos: - A European astrometry satellite - Mission objectives, technical issues and approaches

Details Hipparcos: - A European astrometry satellite - Mission objectives, technical issues and approaches Hipparcos: - A European astrometry satellite - Mission objectives, technical issues and approaches

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pari.iafcw....s&link_type=abstract

International Astronautical Federation, International Astronautical Congress, 33rd, Paris, France, Sept. 27-Oct. 2, 1982, 9 p.

Astronomy and Astrophysics

Astronomy

Astrometry, Hipparcos Satellite, Spaceborne Astronomy, Astronomical Catalogs, Data Reduction, Onboard Data Processing, Satellite Attitude Control, Spaceborne Telescopes, Spacecraft Power Supplies

Scientific paper

Hipparcos will be the first space mission devoted to the compilation of an astrometric catalog, a catalog that will connect stars all across the celestial sphere. The goal of the mission is to produce a catalog of stars down to magnitudes 12-13, complete for stars brighter than about magnitude 9. The mission will also include the Tycho experiment, wherein all stars down to the limiting magnitude of the instrument will be observed, representing about 400,000 stars down to magnitudes 10-11. The Hipparcos catalog will correct systematic errors of the AG3R stellar catalog. Hipparcos will operate by measuring the phase difference between the modulated light intensity of stars which appear in the field of view during the satellite scanning motion. The technological advances that the mission requires, for example, a beam-combiner/corrector and grid manufacturing, have been made. The extensive mathematical analyses and simulations performed so far argue the feasibility of the mission objectives.

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