Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2010 · 39 citations · 6 references
Natural SciencesAstronomyPhysicsAstrometryAstrophysicsObservational AstronomyAbsolute AstrometryAstrometric Data ReductionAstrometric InstrumentationGalactic CenterInterferometrySpace-based AstrometryAstrometric MeasurementAstrometric TelescopesExoplanet Astrometric DetectionExoplanet AstrometryInterferometer DesignInterferometric AstrometryStrong-field RegimeVery Long Baseline Interferometry Astrometry
ASTRA (ASTrometric and phase-Referencing Astronomy) is an upgrade to the existing Keck Interferometer which aims at providing new self-phase referencing (high spectral resolution observation of YSOs), dual-field phase referencing (sensitive AGN observations), and astrometric (known exoplanetary systems characterization and galactic center general relativity in strong field regime) capabilities. With the first high spectral resolution mode now offered to the community, this contribution focuses on the progress of the dual field and astrometric modes.
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