FRIDA integral field unit manufacturing
FRIDA integral field unit manufacturing
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FRIDA 整体现场单元制造
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
B. Sánchez
中科院分区：
文献类型：
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作者：
S. Cuevas;S. Eikenberry;B. Sánchez
FRIDA（用于Gran Telescopio Canarias自适应光学系统的红外成像仪和析象管）被设计为低温和衍射限制仪器，将提供宽带和窄带成像和积分场光谱（IFS）。成像模式和IFS观察模式将使用相同的Teledyne 2Kx2K探测器。该仪器将安装在GTC自适应光学系统（GTCAO）后面的Nasmyth B站。FRIDA将使用30层积分场单元（IFU）提供IFS模式。本IFU设计基于佛罗里达大学FISICA，其中反射镜块阵列是在单片金属块上金刚石翻转的。FRIDA IFU为切片器类型;主要由3个镜块（每个镜块有30个球面镜）组成。它还具有基于两个离轴球面镜的史瓦西继电器和两个离轴抛物面镜的无焦系统。包括两个插入镜，IFU可容纳96个金属镜。所有的镜子都是通过金刚石车削技术在镀有镍合金的6061-T6铝块上制造的。除了Schwarzschild继电器和插入镜，92个反射镜由康宁在美国新罕布什尔州基恩制造。不同的块和镜子安装在光学机械支撑上，以确保完整IFU的图像质量和完整性。在这项工作中，FRIDA IFU组件的制造进展进行了描述。此外，还描述了反射镜阻挡单独验证测试。
FRIDA (inFRared Imager and Dissector for the Adaptive optics system of the Gran Telescopio Canarias) has been designed as a cryogenic and diffraction limited instrument that will offer broad and narrow band imaging and integral field spectroscopy (IFS). Both, the imaging mode and IFS observing modes will use the same Teledyne 2Kx2K detector. This instrument will be installed at Nasmyth B station, behind the GTC Adaptive Optics system (GTCAO). FRIDA will provide the IFS mode using a 30 slices Integral Field Unit (IFU). This IFU design is based on the University of Florida FISICA where the mirror block arrays are diamond turned on monolithic metal blocks. The FRIDA IFU is of the slicer type; conformed mainly by 3 mirror blocks with 30 spherical mirrors each. It also has a Schwarzschild relay based on two off axis spherical mirrors and an afocal system of two parabolic off axis mirrors. Including two insertion mirrors the IFU holds 96 metal mirrors. All the mirrors have been manufactured by diamond turning techniques on monolithic blocks of aluminum 6061-T6 coated by a Nickel alloy. Except for the Schwarzschild relay and the insertion mirrors, 92 mirrors were manufactured by Corning in Keene NH, USA. The different blocks and mirrors are mounted on an opto-mechanical support that ensures the image quality and integrity of the complete IFU. In this work advances on the manufacturing of the FRIDA IFU components are described. Furthermore, the mirror blocks individual verification tests and are also described.