Publications of the MPIfR
Optical & Infrared
Interferometry Group
S. Lagarde, B. Lopez, P. Antonelli, U.
Beckman, J. Behrend, Y. Bresson, O. Chesneau, M. Dugué, A. Glazenborg,
U. Graser, K. H. Hofmann, W. Jaffe, Ch. Leinert, F. Millour, J. L.
Menut, R. G. Petrov, T. Ratzka, G. Weigelt, S. Wolf, P. Abraham, C.
Connot, T. Henning, M. Heininger, Y. Hugues, S. Kraus, W. Laun, A.
Matter, U. Neumann, E. Nussbaum, A. Niedzielski, L. Mosoni, S.
Robbe-Dubois, A. Roussel, D. Schertl, F. Vakili, K. Wagner, and
L.B.F.M. Waters
MATISSE: a four beams combiner in the
mid-infrared for the VLTI
Advances in Stellar Interferometry
Proceedings of SPIE: Vol. 6268, p.62683M-(1-10)
Danchi, W., Monnier, J., Schöller, M. (eds.)
Abstract
A first generation of VLTI (Very Large Telescopes Interferometer) focal
instruments, AMBER in the near-infrared and MIDI in the mid-infrared,
has been already integrated and tested. New and important science
results have been obtained. These instruments combine two (for MIDI) or
three (for AMBER) beams coming from the eight telescopes installed at
Cerro Paranal (four 8-meters and four 1.8-meters telescopes). In order
to improve the capabilities of the interferometer and to engage a new
scientific prospective, the second generation of VLTI instruments is
currently under study. MATISSE belongs to this second generation.
MATISSE objective is the image reconstruction. It will extend the
astrophysical potential of the VLTI by overcoming the ambiguities
existing in the interpretation of simple visibility measurements. It is
a spectro-interferometer combining up to four beams with a large
spectral coverage ranging from 3 to 25 µm (L, M, N and Q bands).
Different spectral resolutions (between 30 and 1500) are foreseen.
MATISSE will measure closure phase relations thus offering an efficient
capability for image reconstruction. The concept of MATISSE is
presented in this paper. The recombination mode of MATISSE is similar
to the AMBER beam combination, but has been adapted to the constraints
specific to the mid-infrared domain.
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