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Proceedings Paper

A novel simultaneous differential imager for the direct imaging of giant planets
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Paper Abstract

The Adaptive Optics System NACO at the VLT has been equipped with a Simultaneous Differential Imager (SDI) designed to provide direct imaging of giant extra-solar planets. Exploiting the fact that all cool (Teff < 1200K) extra-solar giant planets have strong CH4 (methane) absorption beyond 1.62 μm in the H band NIR atmospheric window, diffraction limited narrow-band images centred on this absorption edge are obtained with NACO simultaneously to reduce the speckle-noise floor and increase the sensitivity for Jupiter-like planets around nearby young stars. We present the technical realization of this device and first results obtained during the commissioning run.

Paper Details

Date Published: 30 September 2004
PDF: 8 pages
Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, (30 September 2004); doi: 10.1117/12.549406
Show Author Affiliations
Rainer Lenzen, Max-Planck-Institut fur Astronomie (Germany)
Laird Close, Steward Observatory/Univ. of Arizona (United States)
Wolfgang Brandner, Max-Planck-Institut fur Astronomie (Germany)
Beth Biller, Steward Observatory/Univ. of Arizona (United States)
Markus Hartung, European Southern Observatory (Chile)

Published in SPIE Proceedings Vol. 5492:
Ground-based Instrumentation for Astronomy
Alan F. M. Moorwood; Masanori Iye, Editor(s)

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