Laser guide star upgrade of Altair at Gemini North
Laser guide star upgrade of Altair at Gemini North
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双子座北站 Altair 激光导星升级
DOI：
10.1117/12.670842
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
Simon Chan
中科院分区：
文献类型：
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作者：
M. Boccas;F. Rigaut;M. Bec;B. Irarrázaval;E. James;A. Ebbers;C. d’Orgeville;K. Grace;G. Arriagada;S. Karewicz;Mike Sheehan;John K. White;Simon Chan
Altair是安装在Gemini North上的通用自适应光学平台，自2003年以来成功地与自然引导星（NGS）一起运行。最初的设计和制造包括一个额外的波前传感器（WFS），以实现与激光导星（LGS）的操作。“牵牛星”最近进行了升级，并在2005年6月至11月间进行了功能调试。在NGS路径中插入一个二色分光镜，可以将589nm的光反射到LGS波前传感器，并将NGS（或Tip-Tilt Guide star - ttgs -）的可见光传输到Tip-Tilt -focus传感器。我们将回顾为这种双重操作所做的各种修改，包括硬件和软件，并描述在天空中集成和测试阶段的步骤和结果。
Altair is the general-purpose Adaptive Optics bench installed on Gemini North that has operated successfully with Natural Guide Star (NGS) since 2003. The original design and fabrication included an additional WaveFront Sensor (WFS) to enable operation with Laser Guide Star (LGS). Altair has been recently upgraded and functional commissioning was performed between June and November 2005. The insertion of a dichroic beamsplitter in the NGS path allows to reflect the 589nm light to the LGS wavefront sensor and transmit the visible light of the NGS (or Tip-Tilt Guide star -TTGS-) to the tip-tilt-focus sensors. We will review the various modifications made for this dual operation, both in hardware and software, and describe the steps and results of the integration and testing phase on the sky.