Design of a compact astrometric instrument for the GAME mission

Details Design of a compact astrometric instrument for the GAME mission Design of a compact astrometric instrument for the GAME mission

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008iaus..248..274l&link_type=abstract

A Giant Step: from Milli- to Micro-arcsecond Astrometry, Proceedings of the International Astronomical Union, IAU Symposium, Vol

Astronomy and Astrophysics

Astronomy

Gravitational Lensing, Space Vehicles, Instrumentation: Interferometers, Techniques: High Angular Resolution

Scientific paper

We present the design of a Fizeau interferometer to be implemented for the GAME mission. The aim is to measure the PPN γ parameter with the same technique used for the first time by Dyson, Eddington et al., but at a 10-6 accuracy level. GAME will observe about 106 sufficiently bright stars at about 2° from the Sun. A dedicated space mission has the advantage of observing the light bending without waiting for an eclipse.

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