发表机构
University of Toronto; Dunlap Institute for Astronomy and Astrophysics, University of Toronto; Cosmic Frontier; Masaryk University; Konkoly Observatory, Research Centre for Astronomy and Earth Sciences（多伦多大学; 多伦多大学邓普天文学与天体物理研究所; 宇宙前沿; 马萨里克大学; 科农科伊天文台，地球科学研究中心）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
LUVCam2是80毫米紫外-光学双波段太空望远镜，搭载于BRNOsat立方星，采用背照式CMOS提升紫外量子效率，并实现星跟踪等升级，用于观测低质量恒星紫外耀发。
AI 中文摘要
第二台小型紫外相机（LUVCam2）是一台直径为80毫米的紫外-光学双波段太空望远镜，将用于观测低质量恒星周围的紫外耀发，计划于2027年底作为约1.4U的有效载荷搭载在3U立方星BRNOsat上飞行。我们介绍了LUVCam2的操作概念、完整系统架构、光机设计和电气设计。LUVCam2是LUVCam电子板的第二次技术演示，第一台LUVCam（LUVCam1）仍在低地球轨道上运行（于2024年7月发射）。LUVCam2的主要升级是采用了背照式GSENSE4040BSI CMOS传感器，相较于LUVCam1中使用的前照式型号，有望显著提高紫外量子效率。LUVCam2的其他升级包括将LUVCam星载计算机集成到读出电子设备中，集成1W加热器和热控制系统，以及LUVCam2利用背景恒星的光学图像在传感器上进行星跟踪的新操作能力。
英文摘要
The second Little UltraViolet Camera (LUVCam2) is a 80mm-diameter dual UV-optical space telescope that will observe the UV flares around low-mass stars, with planned flight as a $\sim$1.4U payload aboard the 3U CubeSat BRNOsat in late 2027. We present the concept of operations, full system architecture, optomechanical, and electrical design for LUVCam2. LUVCam2 is the second technology demonstration for the LUVCam electronics board, with the first LUVCam (LUVCam1) still operating in low-Earth orbit (launched July 2024). The main upgrade of LUVCam2 is the use of the backside-illuminated GSENSE4040BSI CMOS sensor, promising significant improvement to UV quantum efficiency over the frontside-illuminated model used in LUVCam1. Other upgrades to LUVCam2 include the incorporation of the LUVCam on-board computer onto the readout electronics, an integrated 1W heater and thermal control system, and novel operational capability for LUVCam2 to perform on-sensor star-tracking using optical images of background stars.
Comments12 pages, 9 figures
Journal refEmily Hu, Suresh Sivanandam, Albert Lau, et al. "The second little ultraviolet camera (LUVCam2) mission", Proc. SPIE 14146, Space Telescopes and Instrumentation 2026: Ultraviolet to Gamma Ray, 141461T (17 Aug 2026)
