4MOST metrology system image processing
4MOST metrology system image processing
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4MOST计量系统图像处理
DOI：
10.1117/12.2233257
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
A. Saviauk
中科院分区：
文献类型：
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作者：
R. Winkler;S. Barden;A. Saviauk
4 米多目标光谱望远镜 (4MOST) 仪器使用约 2400 个单独定位的光纤将目标的光耦合到其光谱仪中。计量系统确定背照式光纤在望远镜焦面上的位置。它由 4 个相同的相机组成，安装在 VISTA 望远镜副镜的蜘蛛叶片上，并观察整个光学系统，包括 M1、M2 和 WFC/ADC 单元。在这里，我们描述了计量系统的图像和数据处理步骤，并展示了我们十分之一规模的实验室原型的结果。
The 4-meter Multi-Object Spectroscopic Telescope (4MOST) instrument uses ~ 2400 individually positioned optical fibres to couple the light of targets into its spectrographs. The metrology system determines the position of the back-illuminated fibres on the focal surface of the telescope. It consists of 4 identical cameras that are mounted on the spider vanes of the secondary mirror of the VISTA telescope and look through the entire optical train, including M1, M2 and the WFC/ADC unit. Here, we describe the image and data processing steps of the metrology system as well as present results from our 1 in 10 sized lab prototype.