AI 中文总结
为印度NLOT设计直接光纤馈送式Mo-IFS，前端为可移动微透镜+光纤积分场单元，由两通道组成，覆盖特定波长范围，通过Zemax模拟评估性能，展示了初始光学配置、设计方法及预期性能。
AI 中文摘要
本文介绍了为印度未来的国家大型光学/红外望远镜（NLOT）设计的双通道光纤馈送式多目标积分场光谱仪（Mo-IFS）的初始光学设计和性能分析。前端是基于可移动微透镜+光纤的积分场单元。该光谱仪设计为直接接收来自约200根芯径为100μm光纤的f/4光束，无需额外前置光学元件。仪器由两个优化的光谱通道组成，覆盖0.32 - 0.62μm（蓝通道）和0.60 - 1.00μm（红通道）波长范围。光学设计旨在在蓝通道实现约R~2700、红通道约R~2500的中等光谱分辨率，并在宽光谱范围内保持高吞吐量。通过Zemax模拟评估了全波长范围内的图像质量、光斑尺寸分布、光谱分辨率和探测器采样情况。本文展示了该仪器的初始光学配置、设计方法和预期性能。
英文摘要
The initial optical design and performance analysis of a dual-channel fibre-fed Multi-Object Integral Field spectrograph (Mo-IFS) being designed for a future National Large Optical/Infrared Telescope (NLOT) in India. The front end will be a moveable lenslet+fiber based integral field unit. The spectrograph is designed to directly accept an f/4 beam from the approximately 200 optical fibers, each with a 100 um core diameter without additional fore-optics. The instrument consists of two optimized spectral channels covering wavelength ranges of 0.32-0.62 um (blue channel) and 0.60-1.00 um (red channel). The optical design aims to achieve moderate spectral resolutions of approximately R ~ 2700 in the blue channel and R ~ 2500 in the red channel while maintaining high throughput over a broad spectral range. The spectrograph architecture includes a fiber-fed entrance slit, collimator optics, dichroic beam splitting system, dispersive elements, and dedicated camera optics for each channel. Zemax simulations were carried out to evaluate image quality, spot size distribution, spectral resolution, and detector sampling across the full wavelength range. The current work presents the initial optical configuration, design methodology, and expected performance of the instrument.
Comments10 pages, 6 figures, Submitted to SPIE Astronomical Telescopes + Instrumentation 2026, Paper No.: 14154-145
