In this paper we present the Medium Resolution Spectrograph ESOPO, an instrument designed and built for the 2.1m Telescope at the Observatorio Astronomico Nacional at San Pedro Martin We discuss the Scientific Goals and the High Level Requirements necessary to translate these goals to optical, mechanical and control specifications. We make an introduction to its conceptual dual-arm design. The optical design is based on a non-classical configuration. The gratings are illuminated in a conical mode working in a quasi Littrow configuration which has the advantage of optimizing the efficiency and the pupil area on the grating. We show here the results of an experimental evaluation of the concept. The optical design, mechanical structure, slit-mask and acquisition system, control systems, and a study of thermal compensators, are discussed briefly, references to more extended contributions in these proceedings are made. The management schematics of the project are briefly discussed.
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机译：在本文中，我们介绍了介质分辨率光谱仪ESOPO，这款仪器为San Pedro Martin的Agangatorio天文学Nacional设计和建造的仪器，我们讨论了将这些目标转化为光学，机械和机械和电气的科学目标和高级要求。控制规范。我们介绍了其概念性双臂设计。光学设计基于非古典配置。光栅以锥形模式照亮，该模式工作在准leittrow配置中，该配置具有优于优化光栅上的效率和瞳孔区域。我们在这里展示了该概念的实验评价的结果。简要讨论了光学设计，机械结构，粘接器和采集系统，控制系统和热补偿器的研究，提及这些程序中的更多延长贡献。简要讨论了该项目的管理原理图。
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