论文标题
4Great-高分辨率空降Terahertz光谱的四色接收器
4GREAT -- a four-color receiver for high-resolution airborne terahertz spectroscopy
论文作者
论文摘要
4great是在Terahertz频率（Great）在红外天文学（SOFIA）上运行的Terahertz频率（Great）在Terahertz频率上进行天文学的延伸。光谱仪包括四个不同的检测器频带及其相关子系统，用于同时且完全独立的科学操作。所有检测器梁均在天空上共对准。 4Great覆盖的频带分别为491-635、890-1090、1240-1525和2490-2590 GHz。本文介绍了乐器的设计和表征及其机上性能。 4great在2018年6月看到了第一盏灯，并已向感兴趣的索非亚社区提供了观察6周期。
4GREAT is an extension of the German Receiver for Astronomy at Terahertz frequencies (GREAT) operated aboard the Stratospheric Observatory for Infrared Astronomy (SOFIA). The spectrometer comprises four different detector bands and their associated subsystems for simultaneous and fully independent science operation. All detector beams are co-aligned on the sky. The frequency bands of 4GREAT cover 491-635, 890-1090, 1240-1525 and 2490-2590 GHz, respectively. This paper presents the design and characterization of the instrument, and its in-flight performance. 4GREAT saw first light in June 2018, and has been offered to the interested SOFIA communities starting with observing cycle 6.
