ИСТИНА

A new telescope-spectrometer was installed at “Verkhnetulomsky” observatory (68°36'N, 31°47'E) of the Polar Geophysical Institute to supplement the data from all-sky cameras with measurements of the fine space-time structure of the auroral luminescence. The telescope uses 5 cm UV transparent lens as an optical system and a matrix of multi-anode photomultiplier tubes as a photo detector. The angular resolution of the telescope is 1.2°. The detector allows to record waveforms with 2.5 µs time resolution (4 events during 5 s interval with a record length of 128 samples), 0.32 ms resolution (4 events during 5 s interval with a record length of 128 samples) and conduct monitoring measurements continuously with 40.96 ms resolution. The telescope observes a central part (20°×20°) of the all-sky camera field of view (FOV). An additional color narrow field of view camera located in “Lovozero” observatory gives us the possibility to deduce the altitude of the observed auroral structures. Data from the first days of joint observations are presented in the talk. The active intervals of aurora pulsations were measured and partially analysed. The measured frequencies of pulsations are in the range of 1-4 Hz which modulate the slower glow variations. An estimated altitude for the auroral patches is ∼110 km.