AI 中文总结
为开发紧凑型光学天文学积分场光谱仪，设计并实现基于光纤的原型，重点验证由37根光纤组成的IFU模块，经光学设计优化和实验测试，建立了IFS精确光纤对准方法，是相关望远镜全面实现IFS的关键一步。
AI 中文摘要
积分场光谱学能同时提供空间和光谱信息，是研究点状和扩展天体源的有力技术。作为开发紧凑型光学天文学积分场光谱仪（IFS）工作的一部分，我们设计并实现了一个在H-α波长处分辨率约为800的基于光纤的原型。前端光学器件包括前置光学器件和基于微透镜的积分场单元（IFU）已被设计和优化。本文重点在于设计和实验室验证仅由37根光纤组成的IFU模块，这些光纤按精确六边形几何排列以匹配微透镜间距。系统后端形成线性光纤狭缝，为实验室构建的光谱仪供光。光学设计用ZEMAX优化，并用氖灯和太阳光进行实验测试。测量光谱清晰显示出包括H-α线在内的显著特征，色散和分辨率与理论预测一致。虽未集成微透镜，但这项工作为IFS的精确光纤对准建立了有效方法，是迈向为2.34米瓦伊努·巴普望远镜全面实现基于微透镜光纤的IFS的关键一步。
英文摘要
Integral Field Spectroscopy provides simultaneous spatial and spectral information, making it a powerful technique for studying both point like and extended astronomical sources. As part of our effort to develop a compact Integral Field Spectrograph (IFS) for optical astronomy, we have designed and realized a fiber based prototype with a resolving power of ~800 at the H-$α$ wavelength. The front end optics, including the fore optics and lenslet based integral field unit (IFU), have been designed and optimized. In the present work, we focus on the design and laboratory verification of a fiber only IFU module consisting of 37 fibers arranged in a precise hexagonal geometry to match the lenslet pitch. The back end of the system forms a linear fiber slit that feeds a laboratory built spectrograph. The optical design was optimized using ZEMAX, and the system was experimentally tested using a Neon emission lamp and solar light. The measured spectra clearly show prominent features including the H-$α$ lines, with dispersion and resolution consistent with theoretical predictions. Although lenslets are not yet integrated, this work establishes a validated methodology for accurate fiber alignment for IFS. This results form a crucial step toward the full implementation of a lenslet fiber based IFS for the 2.34 meter Vainu Bappu Telescope.
CommentsAccepted in 4th BINA Workshop Proceedings
