Publications of the MPIfR
Optical & Infrared
Interferometry Group
Hofmann, K.-H., Kraus, S., Lopez, B.,
Weigelt, G., Wolf, S.
Aperture synthesis image reconstruction study
for the mid-infrared
VLTI imager MATISSE
Advances in Stellar Interferometry
Proceedings of SPIE: Vol. 6268, p.62683I-(1-7)
Danchi, W., Monnier, J., Schöller, M. (eds.)
Abstract
Aperture synthesis imaging provides a way to overcome the ambiguities
which often exist in the interpretation of singlebaseline
interferometric visibility measurements. The midinfrared imager
MATISSE (Multi AperTure midInfrared SpectroScopic Experiment), which
was proposed to ESO as a secondgeneration VLTI instrument, is designed
to combine up to four 8.2 m VLTI UTs or 1.8 m ATs while simultaneously
providing a high spectroscopic resolution. To demonstrate that MATISSE
will allow highquality interferometric imaging within realistic
observation time constraints, we performed an image reconstruction
study, for which we simulated the uvcoverage achievable in 3, 5, or 7
nights with 3 or 4 telescopes. As input image for our studies, a
protostellar disk image was simulated with the radiative transfer code
MC3D1 . From the simulated visibilities and closure phases, we derived
aperture synthesis images using the Building Block algorithm2 . The
main features of the disk image could be reconstructed in the presence
of noise and assuming the sparse uvcoverage achievable within just 3
nights of observations.
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