Detector of ultraviolet radiation (DUV) of the "Universitetskiy" satellite is intended for measurements of the atmospheric luminescence and flashes in the untraviolet wavelength range. The "MSU-250" database includes the data for separate periods of measuremets. The section "Original data" contains original information in analogue-digital and digital- analogue codes. The section "Data for analysis" contains pre-processed data for further analysis. "Tatiana" program can be used for graph presentation of the experimental data, and "Orbitron" program - for geographical control of the data. Manual on how to use the programs and the data is in the HELP-file. Additional manual can be obtained in the HELP-window of the program being operated.