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

Rainer Lenzen; Laird Close; Wolfgang Brandner; Beth Biller; Markus Hartung

doi:10.1117/12.549406

30 September 2004 A novel simultaneous differential imager for the direct imaging of giant planets

Rainer Lenzen, Laird Close, Wolfgang Brandner, Beth Biller, Markus Hartung

Proceedings Volume 5492, Ground-based Instrumentation for Astronomy; (2004) https://doi.org/10.1117/12.549406
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

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.

Citation Download Citation

Rainer Lenzen, Laird Close, Wolfgang Brandner, Beth Biller, and Markus Hartung "A novel simultaneous differential imager for the direct imaging of giant planets", Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, (30 September 2004); https://doi.org/10.1117/12.549406

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