标题： GYES，用于CFHT的多光纤光谱仪 显示英文标题

标题： GYES, a multifibre spectrograph for the CFHT

摘要： 我们选择了GYES这个名字，这是神话中一个拥有100只手臂的巨人，是盖亚和乌拉诺斯的后代，用于我们对加拿大-法国-夏威夷望远镜主焦点多光纤光谱仪的研究。 这样的仪器可以为盖亚任务提供一个出色的地面补充，并作为AAT上的HERMES项目的北半球补充。 CFHT以其稳定的主焦点环境和大视场而闻名，曾搭载过多个成像仪器，但从未搭载过多光纤光谱仪。 在GEPI使用FLAMES-Giraffe和X-Shooter的经验基础上，我们正在研究在直径1度的视场内实现高多路复用光谱仪（约500根光纤）的可行性。 我们正在研究一种分辨率在15000到30000之间的仪器，该仪器应能为16等星提供准确的化学丰度和径向速度，精度为1 km/s的较暗恒星。 该研究由GEPI-巴黎天文台主导，牛津大学参与了定位器的研究。 研究经费来自INSU CSAA和巴黎天文台。 概念研究将于2010年10月1日提交给CFHT进行审查。 显示英文摘要

摘要： We have chosen the name of GYES, one of the mythological giants with one hundred arms, offspring of Gaia and Uranus, for our instrument study of a multifibre spectrograph for the prime focus of the Canada-France-Hawaii Telescope. Such an instrument could provide an excellent ground-based complement for the Gaia mission and a northern complement to the HERMES project on the AAT. The CFHT is well known for providing a stable prime focus environment, with a large field of view, which has hosted several imaging instruments, but has never hosted a multifibre spectrograph. Building upon the experience gained at GEPI with FLAMES-Giraffe and X-Shooter, we are investigating the feasibility of a high multiplex spectrograph (about 500 fibres) over a field of view 1 degree in diameter. We are investigating an instrument with resolution in the range 15000 to 30000, which should provide accurate chemical abundances for stars down to 16th magnitude and radial velocities, accurate to 1 km/s for fainter stars. The study is led by GEPI-Observatoire de Paris with a contribution from Oxford for the study of the positioner. The financing for the study comes from INSU CSAA and Observatoire de Paris. The conceptual study will be delivered to CFHT for review by October 1st 2010.