Optical design of GAIA

Details Optical design of GAIA Optical design of GAIA

Aug 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997esasp.402..783h&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

Astronomy and Astrophysics

Astrophysics

Scientific paper

The optical design is discussed for the GAIA astrometric satellite project of the European Space Agency. A Gregory-type telescope with a focal length of 60 m is presented, and the usefulness of dispersed interferometric fringes is discussed. A payload with four interferometers is proposed and presently called GAIA95C. It contains two Hipparcos-type beam combiners and telescopes with 2 m diameter giving direct imaging onto a focal plane assembly of CCDs suited for astrometry and 10-colour photometry.

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