发表机构
Steward Observatory, University of Arizona; Catholic University of America; NASA Goddard Space Flight Center; Center for Research and Exploration in Space Science and Technology II, NASA/GSFC; University of Maryland, College Park; KBR（亚利桑那大学斯图尔德天文台; 美国天主教大学; 美国国家航空航天局戈达德太空飞行中心; 美国国家航空航天局戈达德太空飞行中心空间科学与技术研究探索中心II; 马里兰大学帕克分校; KBR公司）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究利用热真空测试数据，分析罗曼望远镜宽视场仪器中亮源经光栅色散后的探测器饱和行为，发现复合级次产生结构杂散光，且邻近饱和像素呈线性增长。
AI 中文摘要
南希·格蕾丝·罗曼太空望远镜于2026年8月30日发射，预计于2027年开始其科学任务。尽管罗曼望远镜的核心科学主要聚焦于微弱和遥远的天体，但作为巡天望远镜，它也将观测许多可能使探测器像素饱和的亮源。我们的目标是研究亮源通过光栅色散后引起的行为，并评估探测器特性可能对科学分析产生的影响。我们利用热真空测试2（TVAC2）的亮源光栅数据，分析了罗曼望远镜宽视场仪器（WFI）中的探测器饱和行为。当亮源通过光栅色散时，我们发现微弱且弥散的复合级次会引起显著的结构性杂散光。我们还发现，与未色散的亮点点源所报告的非线性行为相反，邻近饱和像素的像素在达到饱和极限之前继续表现出线性增长行为。
英文摘要
The Nancy Grace Roman Space Telescope launched on August 30th, 2026 and is expected to begin its science mission in 2027. Although Roman's core science will focus primarily on faint and distant sources, as a survey telescope, it will also observe many bright sources that can saturate the detector pixels. Our goal is to study the behavior caused by bright sources dispersed through the grism and to assess how detector properties may impact scientific analysis. We analyze detector saturation behavior in Roman's Wide Field Instrument (WFI) using Thermal Vacuum Test 2 (TVAC2) bright-source grism data. When bright sources are dispersed through the grism, we find that the faint and diffuse combined orders cause significant structured stray light. We also find that pixels neighboring saturated pixels continue to exhibit linear growth behavior before reaching saturation limits, in contrast to the non-linearity reported for non-dispersed bright point sources.
Comments3 pages, 1 figure
Journal refLipika Chatur et al 2026 Res. Notes AAS 10 279
