Astrometry with Gaia in perspective

Details Astrometry with Gaia in perspective Astrometry with Gaia in perspective

Nov 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sf2a.conf...23m&link_type=abstract

"SF2A-2008: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics Eds.: C. Charbonnel, F. Combes

Astronomy and Astrophysics

Astrophysics

Scientific paper

The astrometric accuracy of Gaia is placed in perspective by showing its expected performances in relation with the slow and unsteady historical progress, specifically in two areas: (i) the realisation of the reference frame, (ii) the measurement of trigonometric parallaxes. It appears clearly that both Hipparcos and Gaia are truly epoch-making steps in this age-old quest for accurate star position. No earlier generation of astrometrists has witnessed such a dramatic improvement over so short a period of time.

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