The polar balloon-borne experiment to detect atmospheric fluorescence and Cerenkov light of Extensive Air Showers (EAS) may serve as a useful step of preparation of orbital experiment. A small prototype of spacecraft-borne detector is proposed to be used in balloon-borne experiment.
Results for the primary cosmic ray energy spectrum at 100–1000 TeV, data on the lateral distribution function for Čerenkov light of EAS and curvature of Čerenkov photon front are presented. Measurements were carried out using an array for observation of discrete gamma-sources in the TeV region.
Results for the primary cosmic ray energy spectrum at 100-2000 TeV, are presented. Measurements were carried out using the new array for observation of discrete gamma-sources in the TeV region, situated in the Thian Shan mountains (Kazakhstan).