SPIRou: the near-infrared spectropolarimeter/high-precision velocimeter for the Canada-France-Hawaii telescope

摘要

SPIRou is a near-IR \'echelle spectropolarimeter and high-precisionvelocimeter under construction as a next-generation instrument for theCanada-France-Hawaii-Telescope. It is designed to cover a very widesimultaneous near-IR spectral range (0.98-2.35 {\mu}m) at a resolving power of73.5K, providing unpolarized and polarized spectra of low-mass stars at aradial velocity (RV) precision of 1m/s. The main science goals of SPIRou arethe detection of habitable super-Earths around low-mass stars and the study ofhow critically magnetic fields impact star / planet formation. Following asuccessful final design review in Spring 2014, SPIRou is now under constructionand is scheduled to see first light in late 2017. We present an overview of keyaspects of SPIRou's optical and mechanical design.