SPICA Coronagraph Instrument (SCI) for the Direct Imaging and Spectroscopy of Exo-Planets

Details SPICA Coronagraph Instrument (SCI) for the Direct Imaging and Spectroscopy of Exo-Planets SPICA Coronagraph Instrument (SCI) for the Direct Imaging and Spectroscopy of Exo-Planets

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009sitc.conf.1004e&link_type=abstract

SPICA joint European/Japanese Workshop, held 6-8 July, 2009 at Oxford, United Kingdom. Edited by A.M. Heras, B.M. Swinyard, K.G

Physics

Optics

Spica, Coronagraph, Instrument, Exo-Planet, Transit, Spectroscopy

Scientific paper

We present the SPICA Coronagraph Instrument (SCI) for the direct imaging and spectroscopy of exo-planets.
The SPICA mission gives us a unique opportunity for high-contrast observations because of the large telescope aperture, the simple pupil shape, and the capability for infrared observations from space. The primary target of SCI is Jovian exo-planets. Using the spectroscopy mode of SCI, we will try the detection and the characterization of mid-infrared line features of the atmosphere of exoplanets. The specifications, performance and the design of the instrument are shown. The main wavelengths and the contrast required for the observations are 3.5-27 μm, and 10-6 , respectively. We also show the progress of the development of key technology to realize SCI. Laboratory demonstration of the principle of coronagraph, realistic design and fabrication of masks, and the development of cryogenic active optics have been carried out, or are successfully ongoing. We are preparing a cryogenic chamber for the tests of the whole infrared coronagraph. A potentially important by-product of the instrument, transit monitoring for characterization of exo-planets, is also described. We expect that SCI will provide drastic progress in the understanding of various planetary systems and will be a unique capability in the SPICA era.

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