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arXiv · 1612.03679

Calibration unit for the near-infrared spectropolarimeter SPIRou

I. Boisse·S. Perruchot·F. Bouchy·F. Dolon·F. Moreau·R. Sottile·F. Wildi
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Abstract

SPIRou is a near-infrared spectropolarimeter and high precision radial velocity instrument, to be implemented at CFHT in end 2017. It focuses on the search for Earth-like planets around M dwarfs and on the study of stellar and planetary formation in the presence of stellar magnetic field. The calibration unit and the radial-velocity reference module are essential to the short- and long-term precision (1 m/s). We highlight the specificities in the calibration techniques compared to the spectrographs HARPS (at LaSilla, ESO) or SOPHIE (at OHP, France) due to the near-infrared wavelengths, the CMOS detectors, and the instrument design. We also describe the calibration unit architecture, design and production.

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I. Boisse, S. Perruchot, F. Bouchy, F. Dolon, F. Moreau, R. Sottile, F. Wildi. 2016-12-12. Calibration unit for the near-infrared spectropolarimeter SPIRou. https://doi.org/10.1117/12.2231678

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