6 August 2009 CSSAR airglow gravity wave imager and its preliminary observation
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The CSSAR airglow imager is developed to investigate the atmospheric gravity waves near the mesopause region. The CSSAR imager consists of a fisheye with a focal length of 10.5 mm and an F number of 2.8, three pieces of lenses for collimation, two filters, an imaging lens and a scientific CCD camera with 1024x1024 array, 24x24 micros pixels. Two filters for measuring the OH Meinel band (750-850nm) airglow layer peaking at 87 km and the O2 (865nm) airglow layer peaking at 90 km are used in the imager. Preliminary observation of the all-sky OH Meinel band airglow has been done during 02:00 to 06:00 on Jan. 5th, 2009, at Hancun (39.4°N, 116.6°E), Langfang, Hebei, which is the first time to image gravity wave in China. Case study shows that one quasi-monochromatic gravity wave has the horizontal wavelength of ~19 km, observed horizontal phase velocity of ~18 m/s, horizontal propagating azimuth direction of ~269° and observed period of ~18 min.
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Cui Tu, Cui Tu, Xiong Hu, Xiong Hu, Shangyong Guo, Shangyong Guo, Zhaoai Yan, Zhaoai Yan, Yongqiang Cheng, Yongqiang Cheng, } "CSSAR airglow gravity wave imager and its preliminary observation", Proc. SPIE 7384, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications, 73841K (6 August 2009); doi: 10.1117/12.835580; https://doi.org/10.1117/12.835580

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