The MRS: A Versatile High Efficiency Spectrograph for the Hobby-Eberly Telescope

MRS：适用于霍比-埃伯利望远镜的多功能高效光谱仪

• 批准号: 9420645
• 负责人: Lawrence Ramsey
• 金额: $ 114.65万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-07-15 至 2002-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9420645&HistoricalAwards=false
• 关键词: MRS; Versatile; Efficiency; Spectrograph; Hobby

AST 9420645 ABSTRACT This project will design, build, and install a versatile and efficient Medium Resolution Spectrograph (MRS) for the 9-m Hobby-Eberly telescope (HET). This instrument will cover the entire visible spectrum from 350 to 1100 nm (with a clear upgrade path for use at 1800 nm), have a resolution range from 3000 lambda/ delta-lambda 18000, and reside in an environmentally controlled spectrograph room. Optical fibers will couple the spectrograph to the telescope; operating modes for the instrument will include single object, synthetic long slit, and multiple object spectroscopy. Because of the need for both spectral coverage and resolution, the MRS will be a dual beam system (split at 590 nm), with a grating cross-dispersed echelle, and a white-pupil that controls vignetting losses while keeping the sizes of costly optical elements small. This configuration is both economical and highly efficient. The MRS will be designed to take maximum advantage of the high efficiency optics and queue scheduled nature of the HET. Among its many programs, the MRS will 1) explore the broad line regions of active galactic nuclei and quasars through dense time sample spectroscopy, 2) examine the evolution of large scale structure in the universe through measurements of quasar absorption lines, 3) detect and characterize the properties of dark matter via kinematical measurements in elliptical galaxies, and 4) measure the age and dynamical evolution of the Milky Way through kinematical study of white dwarfs,.

本项目将为9米霍比-埃伯利望远镜（HET）设计、建造和安装一个多功能、高效的中分辨率光谱仪（MRS）。该仪器将覆盖从350到1100纳米的整个可见光谱（在1800纳米有明确的升级路径），分辨率范围从3000 λ / δ - λ 18000，并位于环境控制的光谱仪室中。光纤将摄谱仪与望远镜连接起来；该仪器的工作模式将包括单目标、合成长缝和多目标光谱。由于对光谱覆盖和分辨率的要求，MRS将是一个双光束系统（在590nm处分裂），具有光栅交叉分散梯形，以及一个白色瞳孔，以控制渐晕损失，同时保持昂贵光学元件的尺寸小。这种配置既经济又高效。MRS的设计将最大限度地利用HET的高效光学和队列调度特性。在众多项目中，MRS将1)通过密集时间样本光谱探索活动星系核和类星体的宽线区域，2)通过类星体吸收线的测量来研究宇宙中大尺度结构的演化，3)通过椭圆星系的运动学测量来探测和表征暗物质的性质，4)通过白矮星的运动学研究来测量银河系的年龄和动力学演化。