GRACES：Gemini通过有史以来最长的天文光纤远程访问CFHT ESPaDOnS摄谱仪（实验阶段完成）。
GRACES: Gemini remote access to CFHT ESPaDOnS Spectrograph through the longest astronomical fiber ever made (Experimental phase completed.)
摘要：
Gemini远程访问CFHT ESPaDONS光谱仪已于2014年5月实现了其实验阶段的第一束光。它成功地收集了来自Gemini North望远镜的光线，并通过两条270米长的光纤将其发送到CFHT的ESPaDOnS光谱仪，以提供整个光学区域的高分辨率光谱。在800 nm处，光纤的平均焦比衰减为14%，最大透过率为85%。GRACES实现了在400和1,000 nm之间提供分辨率为R = 40，000和R = 66，000的光谱。它具有~8%的通量，并且在1小时内对比21等暗的目标敏感。目标的平均获取时间约为10分钟。该项目是Maunakea两个天文台之间富有成效的合作的一个很好的例子，由于Gemini，CFHT和NRC Herzberg团队的相互参与，以及所有密切或间接参与的工作人员，该项目取得了成功。
英文摘要：
The Gemini Remote Access to CFHT ESPaDONS Spectrograph has achieved first light of its experimental phase in May 2014. It successfully collected light from the Gemini North telescope and sent it through two 270 m optical fibers to the the ESPaDOnS spectrograph at CFHT to deliver high-resolution spectroscopy across the optical region. The fibers gave an average focal ratio degradation of 14% on sky, and a maximum transmittance of 85% at 800nm. GRACES achieved delivering spectra with a resolution power of R = 40,000 and R = 66,000 between 400 and 1,000 nm. It has a ~8% throughput and is sensitive to target fainter than 21st mag in 1 hour. The average acquisition time of a target is around 10 min. This project is a great example of a productive collaboration between two observatories on Maunakea that was successful due to the reciprocal involvement of the Gemini, CFHT, and NRC Herzberg teams, and all the staff involved closely or indirectly.
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