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

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

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5492..970l&link_type=abstract

Ground-based Instrumentation for Astronomy. Edited by Alan F. M. Moorwood and Iye Masanori. Proceedings of the SPIE, Volume 5492

Astronomy and Astrophysics

Astronomy

37

Scientific paper

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.

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