30 September 2004 CHEOPS NIR IFS: exploring stars neighborhood spectroscopically
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Abstract
CHEOPS is a 2nd generation VLT instrument for the direct detection of extrasolar planets. The project is currently in its Phase A. It consists of an high order adaptive optics system which provides the necessary Strehl ratio for the differential polarimetric imager (ZIMPOL) and an Integral Field Spectrograph (IFS). The IFS is a very low resolution spectrograph (R~15) which works in the near IR (0.95-1.7 μm), an ideal wavelength range for the ground based detection of planetary features. In our baseline design, the Integral Field Unit (IFU) is a microlens array of about 250x250 elements which will cover a field of view of about 3.5x3.5 arcsecs2 in proximity of the target star. In this paper we describe the instrument, its preliminary optical design and the basic requirements about detectors. In a separate contribution to this conference, we present the very low resolution disperser.
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Riccardo U. Claudi, Massimo Turatto, Raffaele Gratton, Jacopo Antichi, Silvio Buson, Claudio Pernechele, Silvano Desidera, Andrea Baruffolo, Jorge Lima, Juan Alcalà, Enrico Cascone, Gainpaolo Piotto, Sergio Ortolani, Hans Martin Schmid, Markus Feldt, R. Neuhauser, Rens Waters, Alessandro Berton, Paolo Bagnara, "CHEOPS NIR IFS: exploring stars neighborhood spectroscopically", Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, (30 September 2004); doi: 10.1117/12.551427; https://doi.org/10.1117/12.551427
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