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Published July 21, 2010 | Published
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PIONIER: a visitor instrument for VLTI

Abstract

PIONIER is a 4-telescope visitor instrument for the VLTI, planned to see its first fringes in 2010. It combines four ATs or four UTs using a pairwise ABCD integrated optics combiner that can also be used in scanning mode. It provides low spectral resolution in H and K band. PIONIER is designed for imaging with a specific emphasis on fast fringe recording to allow closure-phases and visibilities to be precisely measured. In this work we provide the detailed description of the instrument and present its updated status.

Additional Information

© 2010 Society of Photo-optical Instrumentation Engineers (SPIE). PIONIER is funded by the Université Joseph Fourier (Grenoble), the INSU "Programme National de Physique Stellaire" and INSU "Programme National de Planétologie" and equipped with a detector provided by W. Traub (JPL, Caltech). It is developed by the GRIL (now CRISTAL) instrumental team of Laboratoire d'Astrophysique de 'Grenoble (LOAG) in collaboration with R. Millan-Gabet (Nextsci, Caltech) and W. Traub.

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