PIONIER: a visitor instrument for the VLTI

J.-P. Berger , G. Zins , B. Lazareff , J.-B. LeBouquin , L. Jocou , P. Kern , R. Millan-Gabet , W. Traub

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P. Haguenauer O. Absil J.-C. Augereau M. Benisty N. Blind X. Bonfils A. Delboulbe P. Feautrier M. Germain D. Gillier P. Gitton M. Kiekebusch J. Knudstrup J.-L Lizon Y. Magnard F. Malbet D. Maurel F. Menard M. Micallef L. Michaud S. Morel T. Moulin D. Popovic K. Perraut P. Rabou S. Rochat F. Roussel A. Roux E. Stadler E. Tatulli

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classification 🌌 astro-ph.IM

keywords instrumentpionierfourvisitorvltiabcdallowband

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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.

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PIONIER: a visitor instrument for the VLTI

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