GREAT: the SOFIA high-frequency heterodyne instrument
GREAT: the SOFIA high-frequency heterodyne instrument
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伟大：SOFIA 高频外差仪器
DOI：
10.1051/0004-6361/201218811
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发表时间：
2012
影响因子：
6.5
通讯作者：
P. Hartogh
中科院分区：
文献类型：
--
作者：
S. Heyminck;U. Graf;R. Gusten;J. Stutzki;H. Hubers;P. Hartogh
本文介绍了在平流层红外天文台（索菲亚）上运行的GREAT（德国太赫兹天文接收器）的设计和结构。GREAT是一种用于高分辨率远红外（FIR）光谱的模块化双色外差仪器。该仪器被选作索菲亚的早期科学演示，自2011年4月1日调试飞行记录到第一束光以来，已成功进行了三次短期和十几次基础科学飞行。我们报告的接收器，在飞行中的性能和操作-在各种飞行配置，三个不同的检测器通道-在1.25和2.5太赫兹之间的几个科学定义的频率窗口观察。经验证，接收器光学器件符合设计要求，具有标称效率;接收器灵敏度达到最新水平，具有出色的系统稳定性。模块化设计允许最新技术的持续集成;我们简要讨论了正在开发的其他通道和第1周期观测的持续改进。GREAT是一个主要的调查工具，由四个德国研究所组成的联合体开发，在合作的基础上提供给索菲亚用户。
We describe the design and construction of GREAT (German REceiver for Astronomy at Terahertz frequencies) operated on the Stratospheric Observatory For Infrared Astronomy (SOFIA). GREAT is a modular dual-color heterodyne instrument for highresolution far-infrared (FIR) spectroscopy. Selected for SOFIA’s Early Science demonstration, the instrument has successfully performed three Short and more than a dozen Basic Science flights since first light was recorded on its April 1, 2011 commissioning flight. We report on the in-flight performance and operation of the receiver that – in various flight configurations, with three different detector channels – observed in several science-defined frequency windows between 1.25 and 2.5 THz. The receiver optics was verified to be diffraction-limited as designed, with nominal efficiencies; receiver sensitivities are state-of-the-art, with excellent system stability. The modular design allows for the continuous integration of latest technologies; we briefly discuss additional channels under development and ongoing improvements for Cycle 1 observations. GREAT is a principal investigator instrument, developed by a consortium of four German research institutes, available to the SOFIA users on a collaborative basis.
GREAT/SOFIA 大气校准
影响因子：
6.5
作者：
Stutzki;Güsten;Requena- Torres;Wiesemeyer
通讯作者：
Wiesemeyer