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Orbiting stellar interferometer

The Orbiting Stellar Interferometer (OSI) is a space-based interferometer concept which will perform high precision wide angle astronomic measurements. The goal of this mission is to achieve an accuracy of 2 uas over a 30 degree field of view. In addition, to astrometry, OSI will also be capable of performing synthesis imaging measurements with a resolution of 14 mas. These capabilities will enable a large number of astrophysics measurements including parallax measurements, dynamics of globular clusters and detection of extra solar planets.