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Proceedings Paper

PRIMA: study for a dual-beam instrument for the VLT Interferometer
Author(s): Andreas Quirrenbach; Vincent Coude du Foresto; Gerard Daigne; Karl-Heinz Hofmann; Reiner Hofmann; Mario G. Lattanzi; R. Osterbart; Rudolf S. le Poole; Didier Queloz; Farrokh Vakili
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Paper Abstract

PRIMA (instrument for Phase-Referenced Imaging and Microarcsecond Astrometry) is a conceptual study for a single-baseline dual-feed instrument for the Very Large Telescope Interferometer (VLTI), which is under construction by the European Southern Observatory on Cerro Paranal in Chile. The goals of PRIMA include narrow-angle astrometry with a precision of 10 μas over an arc of 10", and imaging of faint sources with the full sensitivity of the 8 m telescopes in the VLT array. Key scientific programs that can be carried out with PRIMA in imaging mode include observations of active galactic nuclei, the Galactic Center, stars, and circumstellar matter. Scientific drivers for the astrometry are searches for planets and low-mass stellar companions, binary stars, dynamics of clusters, and (relative) parallaxes. We list the main performance requirements for PRIMA, present system architectures for the dual-beam system, and discuss limitations of the interferometric field-of-view.

Paper Details

Date Published: 24 July 1998
PDF: 11 pages
Proc. SPIE 3350, Astronomical Interferometry, (24 July 1998); doi: 10.1117/12.317149
Show Author Affiliations
Andreas Quirrenbach, Univ. of California/San Diego (United States)
Vincent Coude du Foresto, Observatoire de Paris-Meudon (France)
Gerard Daigne, Observatoire de Bordeaux (France)
Karl-Heinz Hofmann, Max-Planck-Institut fuer Radioastronomie (Germany)
Reiner Hofmann, Max-Planck-Institut fuer Extraterrestrische Physik (Germany)
Mario G. Lattanzi, Osservatorio Astronomico di Torino (Italy)
R. Osterbart, Max-Planck-Institut fuer Radioastronomie (Germany)
Rudolf S. le Poole, Sterrewacht Leiden/Univ. Leiden (Netherlands)
Didier Queloz, Observatoire de Geneve (Switzerland)
Jet Propulsion Lab. (United States)
Farrokh Vakili, Observatoire de la Cote d'Azur (France)

Published in SPIE Proceedings Vol. 3350:
Astronomical Interferometry
Robert D. Reasenberg, Editor(s)

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