CHARA阵列上K波段集成光学光束组合器仪器的恒星干涉测量 - I. CHARIOT首次天空条纹
Stellar interferometry with a K-band integrated optics beam combiner instrument at the CHARA Array - I. First on-sky fringes for CHARIOT
浏览论文内容
中文总结 AI 辅助
本文介绍CHARA阵列上新型K波段集成光学光束组合器仪器CHARIOT的首次天空观测，验证其性能与JouFLU相当，为高精度干涉测量铺路。
中文摘要 AI 辅助
我们介绍了CHARA阵列上新型CHara ARray集成光学测试台（CHARIOT）的仪器描述和首次天空观测。CHARIOT是一台2望远镜概念验证仪器，利用超快激光写入在Infrasil石英玻璃中制造的纤维连接光束组合器，该玻璃在整个K波段具有低OH污染和高透明度。凭借其光纤连接架构，CHARIOT被设计为即插即用的测试台仪器，用于在天空上测试和验证光纤天文光子组件。目前，CHARIOT能够以低于1%的精度测量K星等<2的恒星的原始条纹平方可见度。在差到中等视宁度条件下，当前条纹探测的极限星等为K-mag = 5.212（HD210824）。这些结果表明，CHARIOT的性能已经与之前的JouFLU仪器相当。通过进一步改进，可以扩展极限星等并提高对较暗恒星的测量精度。成功的天空演示为CHARA阵列上新型高精度K波段光束组合器仪器铺平了道路。
英文摘要
We present the instrument description and the first on-sky observations for the new CHara ARray Integrated Optics Testbench (CHARIOT) at the CHARA Array. CHARIOT is a 2-telescope proof-of-concept instrument that utilises a fibre-connectorised beam combiner fabricated by ultrafast laser-inscription in Infrasil quartz glass, which presents low-OH contamination and high transparency over the whole K-band. With its fibre-connected architecture, CHARIOT is designed as a plug-and-play testbed instrument to test and validate fibred astrophotonic components on-sky. At this point, CHARIOT is able to measure raw fringe squared visibilities with a sub-1% precision for stars with K-mag<2. Under poor to moderate seeing conditions, the current limiting magnitude for fringe detection is K-mag = 5.212 (HD210824). These results demonstrate that CHARIOT's performance is already comparable to the former JouFLU instrument. With additional improvements, the limiting magnitude could be extended and the precision for fainter stars improved. The successful on-sky demonstration paves the way for a new high precision K-band beam combiner instrument at the CHARA array.
发表机构
- Corning Optical Communications GmbH & Co. KG（康宁光学通讯有限公司）
- Leibniz-Institut für Astrophysik Potsdam（波茨坦阿斯特罗物理学会莱布尼茨研究所）
- I. Physikalisches Institut, Universität zu Köln（科隆大学第一物理研究所）
- The CHARA Array of Georgia State University（佐治亚州立大学CHARA阵列）
- Institute of Photonics and Quantum Sciences, Heriot-Watt University（赫瑞-瓦特大学光子与量子科学研究所）
- Humboldt-Universität zu Berlin（柏林洪堡大学）
机构由 AI 辅助整理，请以论文原文为准。
