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Fore-optics of the MUSE Instrument

Proceedings of SPIE(2012)

Univ Toulouse | Univ Lyon

Cited 3|Views11
Abstract
MUSE (Multi Unit Spectroscopic Explorer) is a second generation VLT panoramic integral field spectrograph developed for the European Southern Observatory (ESO), operating in the visible wavelength range (0.465-0.93 μm). The MUSE instrument is currently under integration and the commissioning is expected to start at the beginning of year 2013. The scientific and technical capabilities of MUSE are described in a series of 19 companion papers. The Fore-Optics (FO), situated at the entrance of MUSE, is used to de-rotate and provide an anamorphic magnification (x 5 / x 2.5) of the 1 arc minute square field of view from the F/15.2 VLT Nasmyth focal plane (Wide Field Mode, WFM). Additional optical elements can be inserted in the optical beam to further increase the magnification by a factor 8 (Narrow Field Mode, NFM). An atmospheric dispersion corrector is also added in the NFM. Two image stabilization units have been developed to ensure a stabilization of the field of view (1/20 of a resolved element) for each observation mode. Environmental values such as temperature and hygrometry are monitored to inform about the observation conditions. All motorized functions and sensors are remote-controlled from the VLT Software via the CAN bus with CANOpen protocol. In this paper, we describe the FO optical, mechanical and control/command electronic concept, development and performance.
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MUSE,VLT,integral field spectrometer,Fore-optics,control-command
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要点】:本文详细介绍了MUSE仪器的前光学系统设计、开发和性能,该系统用于实现可见光波长范围内的去旋转和视场放大,并确保视场稳定。

方法】:文章描述了前光学系统的光学、机械和控制/命令电子概念,包括去旋转、视场放大和大气色散校正等技术的应用。

实验】:前光学系统已集成至MUSE仪器,并通过VLT软件远程控制,具体性能表现待2013年初开始调试。文中未提及具体的数据集名称。