Astrometric and photometric performance of the small astrometric interferometer satellite DIVA

Details Astrometric and photometric performance of the small astrometric interferometer satellite DIVA Astrometric and photometric performance of the small astrometric interferometer satellite DIVA

Aug 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997esasp.402..827b&link_type=abstract

In: B. Battrick, M.A.C. Perryman and P.L. Bernacca (eds.): HIPPARCOS '97. Presentation of the Hipparcos and Tycho catalogues and

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The expected performance of the small astrometric interferometer satellite DIVA is investigated. Using simulated detector signals, we discuss the dependence of the achievable precision in astrometry and photometry on various technological and mission-specific parameters. Such considerations, which are analogously applicable to other mission concepts (like FAME and GAIA95), lead to a proper recognition of the critical aspects in the mission design. For DIVA, in particular, it is shown that the expected performance significantly exceeds that of Hipparcos, and that the CCD read-out noise is the most critical mission parameter for faint stars.

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