Since December 2013 the new imaging system FAIM (Fast Airglow IMager) for the study of smaller-scale features (both in space and time) is in routine operation at the NDMC (Network for the Detection of Mesospheric Change) station at DLR (German Aerospace Center) in Oberpfaffenhofen (48.1� N, 11.3� E).\udCovering the brightest OH vibrational bands between 1\udand 1.7 μm, this imaging system can acquire two frames\udper second. The field of view is approximately 55 km times\ud60 km at the mesopause heights. A mean spatial resolution\udof 200m at a zenith angle of 45� and up to 120m for zenith\udconditions are achieved. The observations show a large variety of atmospheric waves.\udThis paper introduces the instrument and compares the\udFAIM data with spectrally resolved GRIPS (GRound-based\udInfrared P-branch Spectrometer) data. In addition, a case\udstudy of a breaking gravity wave event, which we assume\udto be associated with Kelvin–Helmholtz instabilities, is discussed.
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机译：自2013年12月以来，用于研究小尺度特征（时空）的新型成像系统FAIM（快速气辉IMager）已在DLR（德国航空航天局）的NDMC（中层变化探测网络）站例行运行中心）在Oberpfaffenhofen（48.1�N，11.3�E）。\ ud覆盖1 \ ud和1.7μm之间的最亮的OH振动带，该成像系统可以每秒获得两帧。在更年期的高度，视场约为55 km x ud60 km。在45°的天顶角处达到200m的平均空间分辨率\ udof，对于天顶\ ud条件达到120m。观测结果显示了各种各样的大气波。\ ud本文介绍了该仪器，并将\ udFAIM数据与光谱解析的GRIPS（基于GRound的\ ud红外P分支光谱仪）数据进行了比较。另外，还讨论了一个破裂重力波事件的案例研究，我们认为这与开尔文-亥姆霍兹不稳定性有关。
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