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Proceedings Paper

Aperture synthesis image reconstruction study for the mid-infrared VLTI imager MATISSE
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Paper Abstract

Aperture synthesis imaging provides a way to overcome the ambiguities which often exist in the interpretation of single-baseline interferometric visibility measurements. The mid-infrared imager MATISSE (Multi AperTure mid-Infrared SpectroScopic Experiment), which was proposed to ESO as a second-generation 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 high-quality interferometric imaging within realistic observation time constraints, we performed an image reconstruction study, for which we simulated the uv-coverage 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 uv-coverage achievable within just 3 nights of observations.

Paper Details

Date Published: 28 June 2006
PDF: 7 pages
Proc. SPIE 6268, Advances in Stellar Interferometry, 62683I (28 June 2006); doi: 10.1117/12.671678
Show Author Affiliations
Karl-Heinz Hofmann, Max Planck Institute for Radioastronomy (Germany)
Stefan Kraus, Max Planck Institute for Radioastronomy (Germany)
Bruno Lopez, Observatoire de la Côte d'Azur (France)
Gerd Weigelt, Max Planck Institute for Radioastronomy (Germany)
Sebastian Wolf, Max Planck Institute for Astronomy (Germany)

Published in SPIE Proceedings Vol. 6268:
Advances in Stellar Interferometry
John D. Monnier; Markus Schöller; William C. Danchi, Editor(s)

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