5 July 2000 Phase-referenced imaging and micro-arcsecond astrometry with the VLTI
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Abstract
An update of the current status and schedule of PRIMA (Phase-Referenced Imaging and Micro-arcsecond Astrometry) developed for the Very Large Telescope Interferometer (VLTI) is given, with emphasis on the astrometric objectives, performances and technological challenges. PRIMA will allow to observe simultaneously two fields separated by 2 to 60 arcsec, to detect and track the fringes on the brightest object, to detect the fringes on the faintest, and to measure the phase of the secondary set of fringes relative to the primary one, with an accuracy of (lambda) /1000 at 2 micrometers .
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Francoise Delplancke, Francoise Delplancke, Samuel A. Leveque, Samuel A. Leveque, Pierre Kervella, Pierre Kervella, Andreas Glindemann, Andreas Glindemann, Luigi D'Arcio, Luigi D'Arcio, } "Phase-referenced imaging and micro-arcsecond astrometry with the VLTI", Proc. SPIE 4006, Interferometry in Optical Astronomy, (5 July 2000); doi: 10.1117/12.390229; https://doi.org/10.1117/12.390229
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