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

被引：43

作者：

Lenzen, R ^{[1
]}

Close, L ^{[1
]}

Brandner, W ^{[1
]}

Biller, B ^{[1
]}

Hartung, M ^{[1
]}

机构：

[1] Max Planck Inst Astron, D-69117 Heidelberg, Germany

来源：

GROUND-BASED INSTRUMENTATION FOR ASTRONOMY, PTS 1-3 | 2004年 / 5492卷

关键词：

VLT; adaptive-optics; NACO; extra-solar planets;

D O I：

10.1117/12.549406

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

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) extrasolar giant planets have strong CH4 (methane) absorption beyond 1.62 mum 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.

引用

页码：970 / 977

页数：8

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