Newton STFC-NARIT - EXOhSPEC (Exoplanet high-resolution Spectrograph)

Newton STFC-NARIT - EXOhSPEC（系外行星高分辨率摄谱仪）

• 批准号: ST/R006598/1
• 负责人: Hugh Jones
• 金额: $ 34.42万
• 依托单位: University of Hertfordshire
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FR006598%2F1
• 关键词: Newton; STFC; NARIT; EXOhSPEC; Exoplanet

The project is to build from catalogue components a new kind of high-resolution spectrograph. The concept relies on separating the complexity introduced by Earth from the requirements of the spectrometer unit itself. This separationenables a massive reduction in size and complexity on the spectrometer side and it is the natural complement to Adaptive Optics technologies being developed elsewhere. The concepts demonstrated here might be used to save tens of millions of pounds in instrumentation costs on the coming generation of extremely large telescopes but also be reproducible by University, public and amateur observatories and offer a competitive alternative to the purchase of large inefficient Fourier transform spectrometers in the wider marketplace. The key developments that we wish to demonstrate are, (1) a compact inexpensive design that can achieve the same performance as existing instruments in terms of wavelength coverage and spectral resolution and (2) bespoke active metrology/actuation of the system to achieve -or even surpass- the best wavelength calibration stability at a fraction of construction and operation costs and to produce a facility instrument. While the prototyping for this instrument is at the University of Hertfordshire, the facility instrument will be produced in Thailand but with the insight gained from operating a prototype version on the new 0.7m. The Thai government has made a large investment in the National Astronomical Research Institute of Thailand and so they have the new laboratories in which to build the instrument as well as immediate access to a new 0.7m. Current high-resolution spectrographs are large, expensive and difficult to maintain and are reserved to an elite of a handful universities and groups around the globe. Moreover, because these instruments are so expensive, technology cycles and designs have evolved very little and do not take advantage of the great quality improvement and reduced costs of new materials and mass produced optics. In a sense, the technological leap we want to embrace is like the one between the first digital cameras to the current smartphone technology. The economic development and welfare of a country relies on key infrastructure and the capabilities of the workforce. In the field of physics and in particular astrophysics, the ability to design and make instruments and to measure and interpret the properties of the transitions in other planets, stars and galaxies is a key cornerstone to understand the properties of the Universe. High-resolution spectroscopy has for decades being a primary tool of astrophysics and a driving force in enabling new fundamental astrophysics. From the discovery of planets around nearby stars to the direct measurement of the size of the Universe. Worldwide, the most oversubscribed instruments on telescopes have long been the high-resolution spectrographs. Although Thailand has a large telescope and a number of smaller ones it does not have a high resolution spectrograph. The proposal is aimed at using Overseas Development Aid funding to develop Thai infrastructure and capabilities while at the same time opening up a new collaboration which should have long-term benefit to the UK scientists and engineers.

该项目是用目录组件建造一种新型的高分辨率摄谱仪。这个概念依赖于将地球引入的复杂性与光谱仪单元本身的要求分开。这种分离使得光谱仪侧的尺寸和复杂性大幅降低，并且是对其他地方正在开发的自适应光学技术的自然补充。这里展示的概念可以用来节省下一代超大望远镜的仪器成本，但也可以由大学，公共和业余天文台重现，并提供一个有竞争力的替代方案，以购买大型低效傅里叶变换光谱仪在更广泛的市场。我们希望展示的关键发展是，（1）紧凑的廉价设计，可以实现与现有仪器在波长覆盖范围和光谱分辨率方面相同的性能，以及（2）定制的系统主动计量/驱动，以实现-甚至超过-最佳波长校准稳定性，并以一小部分的建设和运营成本生产设施仪器。虽然该仪器的原型是在赫特福德大学，设施仪器将在泰国生产，但从操作新的0.7m原型版本中获得的见解。泰国政府对泰国国家天文研究所进行了大量投资，因此他们有新的实验室来建造仪器，并立即获得新的0.7米。目前的高分辨率摄谱仪体积大、价格昂贵、难以维护，而且只有地球仪上的少数几所大学和团体的精英才能使用。此外，由于这些仪器非常昂贵，技术周期和设计发展得很少，并且没有利用新材料和大规模生产的光学器件的巨大质量改进和降低的成本。从某种意义上说，我们想要拥抱的技术飞跃就像第一台数码相机到现在的智能手机技术之间的飞跃。一个国家的经济发展和福利取决于关键的基础设施和劳动力的能力。在物理学领域，特别是天体物理学领域，设计和制造仪器以及测量和解释其他行星，恒星和星系中过渡特性的能力是理解宇宙特性的关键基石。几十年来，高分辨率光谱学一直是天体物理学的主要工具，也是实现新的基础天体物理学的驱动力。从发现附近恒星周围的行星到直接测量宇宙的大小。在世界范围内，长期以来，望远镜上最超额订购的仪器一直是高分辨率光谱仪。虽然泰国有一个大型望远镜和一些小型望远镜，但它没有高分辨率的摄谱仪。该提案旨在利用海外发展援助资金发展泰国的基础设施和能力，同时开辟一个新的合作，这将对英国科学家和工程师产生长期利益。

项目成果

Incoherent light in tapered graded-index fibre: A study of transmission and modal noise

锥形渐变折射率光纤中的非相干光：传输和模态噪声的研究

• DOI: 10.1016/j.yofte.2022.103140
• 发表时间: 2023
• 期刊: Optical Fiber Technology
• 影响因子: 2.7
• 作者: Choochalerm P

Mitigating modal noise in multimode circular fibres by optical agitation using a galvanometer

使用检流计通过光搅拌减轻多模圆形光纤中的模态噪声

• DOI: 10.1093/rasti/rzad059
• 发表时间: 2024
• 期刊: RAS Techniques and Instruments
• 作者: Ghosh S

A Small Actively Controlled High-resolution Spectrograph Based on Off-the-shelf Components

基于现成组件的小型主动控制高分辨率摄谱仪

• DOI: 10.1088/1538-3873/abc7ee
• 发表时间: 2021
• 期刊: Publications of the Astronomical Society of the Pacific
• 影响因子: 3.5
• 作者: Jones H

Efficient Follow-up of Exoplanet Transits Using Small Telescopes

使用小型望远镜有效跟踪系外行星凌日

• DOI: 10.1088/1538-3873/ab1eb4
• 发表时间: 2019
• 期刊: Publications of the Astronomical Society of the Pacific
• 影响因子: 3.5
• 作者: Beck P

HiFLEx -- a highly flexible package to reduce cross-dispersed echelle spectra

HiFLEx——一种高度灵活的封装，可减少交叉色散中阶梯光栅光谱

• DOI: 10.48550/arxiv.2006.09899
• 发表时间: 2020
• 作者: Errmann R