Coronagraphic capability for HARMONI at the E-ELT

Szymon Gladysz; Niranjan A. Thatte; Fraser Clarke; Mathias Tecza; Graeme S. Salter

doi:10.1117/12.857378

20 July 2010 Coronagraphic capability for HARMONI at the E-ELT

Szymon Gladysz, Niranjan A. Thatte, Fraser Clarke, Mathias Tecza, Graeme S. Salter

Proceedings Volume 7735, Ground-based and Airborne Instrumentation for Astronomy III; 773589 (2010) https://doi.org/10.1117/12.857378
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

HARMONI is a proposed visible and near-infrared integral field spectrograph for the European Extremely Large Telescope. We are exploring the merits of adding a coronagraphic capability to HARMONI, specifically targeted at enabling observations of faint, nearby companions (primarily extra-solar planets) that require high contrast. Although HARMONI is not fed by extreme adaptive optics, we show that substantial contrasts can be achieved by post-processing of the hyperspectral data cube using spectral deconvolution. We make predictions of achievable contrast as a function of coronagraph design, based on realistic models of the telescope's aberrations.

Citation Download Citation

Szymon Gladysz, Niranjan A. Thatte, Fraser Clarke, Mathias Tecza, and Graeme S. Salter "Coronagraphic capability for HARMONI at the E-ELT", Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 773589 (20 July 2010); https://doi.org/10.1117/12.857378

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