ИСТИНА

The main goal of RELEC mission is studying of magnetosphere relativistic electron precipitation and its influence on the upper athmosphere as well as transient luminous events (TLE) observation in wide range of electromagnetic spectrum. The RELEC set of instruments includes two identical X- and gamma-ray detectors of high temporal resolution and sensitivity (DRGE-1 & DRGE-2) detectors of energetic electrons and protons DRGE-3, UV TLE imager MTEL, UV detector DUV, Low frequency analyzer LFA, radio frequency analyzer RFA, controlling module for issuing commands and data collection BE. During the RELEC mission following experiments will be performed: - simultaneous observations of energetic electron & proton flux (energy range ~0.1-10.0 MeV and low-frequency (~0.1-10 kHz) electromagnetic wave field intensity variations with high temporal resolution (~1 ms); - fine time structure (~1 mcs) measurements of transient atmospheric events in UV, X- and gamma rays with a possibility of optical imaging with resolution of ~km in wide FOV; - measurements of electron flux pitch-angle distribution in dynamical range from ~0.1 up to 105 part/cm2s; - monitoring of charge and neutral background particles in different areas of near-Earth space. The small satellite with RELEC instruments was successfully launched July, 8 2014. The mission orbit is solar-synchronous with apogee 820 lm, perigee 620 km, inclination 98.4o and orbital period about 100 min. Now the all instruments are switched on and more than 1 Gbyte of data were already obtained and transferred.