发表机构
David A. Dunlap Department of Astronomy and Astrophysics, University of Toronto; Dunlap Institute for Astronomy and Astrophysics, University of Toronto; Department of Physics, University of Toronto; Department of Electrical and Computer Engineering, University of Toronto; Steward Observatory & Department of Astronomy, University of Arizona（多伦多大学天体物理学与天文学戴维·A·邓普勒系; 多伦多大学邓普勒天体物理与天文学研究所; 多伦多大学物理系; 多伦多大学电气与计算机工程系; 亚利桑那大学斯图尔德天文台及天文学系）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文介绍了基于数字微镜器件（DMD）的多目标光谱仪（DMD-MOS）原型，采用双通道设计实现目标选择与光谱观测，并通过实验室测试评估其光谱分辨率、线扩展函数、波长覆盖及DMD与成像平面的映射关系。
AI 中文摘要
摒弃了传统的多目标光谱仪方法，基于数字微镜器件的多目标光谱仪（DMD-MOS）利用一种稳健而精巧的方法，通过使用DMD来生成多目标光谱狭缝掩模。DMD是由微型平面反射镜组成的阵列，其中每个微镜均可被寻址以在两个离散角度之间物理翻转。我们为DMD-MOS设计了两条光学通道，分别对应这两个位置：1）一条成像通道，可用于多目标选择；2）一条光谱通道。利用这种双通道方法，DMD-MOS可以同时通过成像通道对望远镜视场（FOV）成像，并驱动特定的DMD微镜，将来自选定目标的光送入光谱通道。在本工作中，我们展示了DMD-MOS的实验室测试结果，包括光谱分辨率、线扩展函数、波长覆盖范围，以及DMD与成像通道平面之间的映射关系，后者使得DMD-MOS及其控制软件能够即时配置DMD，以观测采集视场中的选定目标。
英文摘要
Abandoning the traditional approaches to multi-object spectrographs, the Digital Micro-mirror Device-based Multi-Object Spectrograph (DMD-MOS) leverages a robust, elegant method for creating multi-object spectroscopy slit masks through use of a DMD, which is an array of microscopic flat mirrors where each micro-mirror can be addressed to physically flip between two discrete angles. We have designed two optical channels for DMD-MOS - one for each of these two positions: 1) an imaging channel that can be used for multi-object target selection and 2) a spectrograph channel. Using this two-channel approach, DMD-MOS can simultaneously image the telescope field of view (FOV) with the imaging channel and actuate the specific DMD micro-mirrors to send light from chosen targets into the spectrograph channel. In this work, we present the results of our laboratory testing of DMD-MOS including spectral resolution, line spread function, wavelength coverage, and the mapping between the DMD and imaging channel planes, the latter of which enables DMD-MOS and our control software to instantaneously configure the DMD to observe chosen target(s) in the acquisition field.
Comments13 pages, 12 figures, conference manuscript for SPIE Astronomical telescopes + Instrumentation 2026, Copenhagen, Denmark
