The work continues the research started in 2017. In 2018 in addition to constant monitoring of the night sky glow, a series of experiments were carried out to register fast variations in the spatial intensity distribution of the night sky radiation in the spectral range of 400–900 nm by an optical instruments complex. The devices complex includes: A photometer assembled on the basis of SONY ICX285AL CCD matrix and a high-aperture lens Jupiter 3; Highly sensitive optical system created on the basis of the 3rd generation EPM102G-04-22C electron-optical converter (EOC) and the Baumer HXG40NIR camera based on CMOSIS CMV4000 1 matrix; Fast four-channel photometer with sensors based on silicon photomultipliers. The paper presents the results of experiments on the synchronous observation of fast optical phenomena in the Earth’s atmosphere. The number of events recorded simultaneously on multiple devices is given. We describe methods and algorithms for extracting events from data series.
We present preliminary observational results of short-period variations in the night sky airglow at middle latitudes. Observations were performed by using a CCD-based photometer over 2016 December to 2017 March. The main objective of our study is to determine a possibility of using a CCD camera to record fast optical flashes, and check a capability to separate signals from satellites, meteors, ground lightning discharges, etc. We describe automatic algorithms to select a frame with a flash and to identify the flash type. Based on the primary database of flashes, a preliminary statistical analysis of the results of observations was performed.
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