Compact designs for high-resolution astronomical spectrometers

高分辨率天文光谱仪的紧凑设计

• 批准号: 1783364
• 金额: --
• 依托单位: Queen Mary University of London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1783364
• 关键词: Compact; designs; resolution; astronomical; spectrometers

Astronomical spectrometers for detailed exoplanet studies need to be broad band, highly efficient, high resolution and extremely mechanically stable. These design constraints can be satisfied with an 'echelle' spectrometer design which consists on a high dispersion grating combined with a prism to separate the diffraction orders. These instruments already exist but they are bulky (size of a car) and difficult to maintain (large vacuum/tempeature controled enclosures, ~3 m^3 volumes). In this project the student will design compact spectrometers of a few tens of cm is size which then will be coupled to telescopes using optical fibres and basic adaptive optics systems. The project will consist on optical designing the device, optimize the optics to minimize aberrations, perform its mechanical design and minimize effects of thermal expansion using novel materials (carbon fibre composites) and demonstrate the performance of the instrument using on-sky measurements.

用于详细系外行星研究的天文光谱仪需要宽带、高效、高分辨率和极其机械稳定。这些设计约束可以通过“中阶梯光栅”光谱仪设计来满足，该光谱仪设计包括与棱镜组合的高色散光栅以分离衍射级。这些仪器已经存在，但它们体积庞大（汽车大小）且难以维护（大型真空/温度控制外壳，约3 m^3体积）。在这个项目中，学生将设计几十厘米大小的紧凑型光谱仪，然后将其与使用光纤和基本自适应光学系统的望远镜耦合。该项目将包括设备的光学设计，优化光学以尽量减少像差，进行机械设计，使用新材料（碳纤维复合材料）尽量减少热膨胀的影响，并使用天空测量演示仪器的性能。

项目成果

EXOhSPEC collimator mechanical design

EXOhSPEC 准直器机械设计

• DOI: 10.1117/12.2529107
• 发表时间: 2019
• 作者: Kawinkij A

Highly replicable, low-cost, portable, general-purpose, high-resolution spectrometer with applications in stellar studies and exoplanet science

高度可复制、低成本、便携式、通用、高分辨率光谱仪，适用于恒星研究和系外行星科学

• DOI: 10.1117/12.2529290
• 发表时间: 2019
• 作者: Baker C