The Goodman spectrograph
The Goodman spectrograph
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DOI：
10.1117/12.550069
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发表时间：
2004-09
期刊：
影响因子：
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通讯作者：
J. Clemens;J. Crain;R. Anderson
中科院分区：
文献类型：
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作者：
J. Clemens;J. Crain;R. Anderson
古德曼光谱仪是用于南方天体物理研究望远镜（SOAR）的一种成像多目标光谱仪。它是首批利用体相全息（VPH）光栅并采用一种关节式相机的仪器之一。这种机械设计在许多通常较为简单的系统上产生了复杂的影响，并导致了一些非传统的解决方案。该光谱仪还在320到850纳米波段针对效率进行了高度优化，并且设计用于快速配置变更，因此其通量使其可与更大望远镜上的仪器相竞争。我们介绍了推动机械和电子系统的高层次要求，并展示了它们在已完成仪器中的实现情况。现在评估整个系统的性能还为时过早，但对模块化子系统的测试显示出有希望的结果。我们讨论了预期的整体性能，并讨论了如果性能未达到我们的目标应采取的缓解策略。
The Goodman Spectrograph is an imaging, multi-object spectrograph for the SOuthern Astrophysical Research telescope (SOAR). It is one of the first designed to take advantage of Volume Phase Holographic (VPH) gratings by employing an articulated camera. This aspect of the mechanical design has had complicating effects on a number of usually simple systems, and has led to some unorthodox solutions. The spectrograph is also highly optimized for efficiency from 320 to 850 nm, and designed for rapid configuration changes, so that its throughput makes it competitive with instruments on larger telescopes. We present the high level requirements that have driven the mechanical and electronic systems, and show their implementation in the completed instrument. It is too early to assess the overall system performance, but tests of the modular subsystems show promising results. We discuss the expected overall performance and discuss mitigation strategies should that performance fall short of our goals.