LLAMAS: A Facility Integral Field Spectrograph for the Magellan Telescopes

LLAMAS：麦哲伦望远镜的设施整体场摄谱仪

• 批准号: 1836002
• 负责人: Robert Simcoe
• 金额: $ 539.47万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1836002&HistoricalAwards=false
• 关键词: LLAMAS; Facility; Integral; Field; Spectrograph

Integral field spectroscopy (IFS) is a technique to construct 3D images of the universe analogous to CAT scans or other 3D medical renderings, by optically manipulating the light collected by astronomical telescopes. Using advances in lithographic manufacture of microscopic lenses and fiberoptics, one can sort each light ray entering a telescope according to its position on the sky, and its color -- which physically maps onto a galaxy's velocity (via the Doppler shift) or distance from Earth. The cost of IFS instruments is driven by the large volume of collected data, since their information rate exceeds that of a conventional spectrometer by roughly a hundred-fold. The Large Lenslet Array Magellan Spectrograph (LLAMAS) uses commoditized digital CCD cameras to address this challenge, spectrally imaging a wide field-of-view on the 6.5-meter diameter Magellan Telescopes. LLAMAS will be available to the US astronomical community through an open-access agreement, and will advance studies of explosive astrophysical transients, and the formation and clustering of galaxies. In addition to building LLAMAS, the MIT-based instrument team is partnering with the FabLab maker space of the Somerville, MA Public High School. They will co-teach a telescope-making course that exposes participants to team-based design, optics, and CAD/additive manufacturing methods central to the future engineering economy.LLAMAS is designed for (1) rapid and efficient spectroscopy of astrophysical transients discovered by the Large Synoptic Survey Telescope (LSST), (2) single-pointing redshift and dynamical measurements of galaxy clusters identified by Sunyaev-Zel?dovich surveys of the Southern sky, and (3) single-pointing emission and absorption measurements of Lyman alpha and metal-enriched gas flows within the circumgalactic halos of distant galaxies. It will produce spectral images of a 37" x 37" field of view (scalable to 60" x 60") at 0.75" spatial resolution using 2400 optical fibers. Each fiber produces a spectrum of R=2200 covering the full optical bandpass (350-980 nm) in a single exposure. LLAMAS will be the first seeing-limited, arcminute-class IFS available on a large US telescope. As a permanent facility instrument, it will be available 365 nights per year via rotation of the Magellan tertiary.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

整体场光谱（IFS）是一种通过光学操纵天文望远镜收集的光，构造类似于猫扫描或其他3D医疗效果的宇宙的3D图像的技术。利用微观镜头和光纤晶体的光刻制造方面的进步，可以根据其在天空上的位置及其颜色对每个灯光进行分类，它们将其物理映射到银河系的速度（通过多普勒移位）或离地球的距离。 IFS仪器的成本是由大量收集的数据驱动的，因为它们的信息速率超过了传统光谱仪的信息速度大约一百倍。大型列型阵列麦哲伦光谱仪（Llamas）使用商品化的数字CCD摄像机来应对这一挑战，从而在6.5米直径的麦哲伦望远镜上进行了广泛的视野成像。美洲驼将通过开放式协议向美国天文学群落提供，并将推进对爆炸性的天体物理瞬变的研究，以及星系的形成和聚类。除了建造Llamas外，基于MIT的仪器团队还与MA公立高中Somerville的Fablab Maker Space合作。他们将共同讲述望远镜制作课程，该课程将参与者暴露于基于团队的设计，光学和CAD/添加剂制造方法中，这是未来工程经济中心的核心。LLAMA为（1）（1）通过大型概要调查望远镜（LSST）（LSST）（LSST）（2）REDSIFT和DENSSIGTORALE（2）播出的天体瞬态快速有效的天体物理瞬态光谱，（2）RATARAX，（2） Sunyaev-Zel？Dovich对南部天空的调查，以及（3）远距离星系中的环境光环内的Lyman Alpha和富含金属增强的气流的单点发射和吸收测量。它将在0.75“使用2400个光纤的空间分辨率下产生37“ x 37”视场的光谱图像（可扩展为60“ x 60”）。每根纤维可在单个暴露中覆盖全光学带（350-980 nm）的r = 2200 r = 2200。永久性设施工具，每年将通过麦哲伦第三纪的轮换进行365夜。该奖项反映了NSF的法定任务，并且使用基金会的知识分子优点和更广泛的审查标准，被认为值得通过评估来获得支持。

项目成果

Status update of LLAMAS: a wide field-of-view visible passband IFU for the 6.5m Magellan telescopes

LLAMAS 状态更新：适用于 6.5m 麦哲伦望远镜的宽视场可见光通带 IFU

• DOI: 10.1117/12.2562803
• 发表时间: 2020
• 期刊: Ground-based and Airborne Instrumentation for Astronomy VIII
• 作者: Furész, Gábor;Simcoe, Robert A.;Egan, Mark D.;Malonis, Andrew;Masterson, Rebecca A.;Brown, Joshua;Cappiello, Gregory;Chesbrough, Christian;Clark, Kristin;Coppeta, David
• 通讯作者: Coppeta, David

Stray light analysis and reduction for IFU spectrograph LLAMAS

IFU 光谱仪 LLAMAS 的杂散光分析和减少

• DOI: 10.1117/12.2562999
• 发表时间: 2020
• 期刊: Ground-based and Airborne Instrumentation for Astronomy VIII
• 作者: Frostig, Danielle;Piotrowski, John;Clark, Kristin;Coppeta, David;Egan, Mark D.;Furész, Gábor;Gabutti, Michelle;Masterson, Rebecca A.;Malonis, Andrew;Simcoe, Robert A.
• 通讯作者: Simcoe, Robert A.