Abstract:
We discuss here the role of moderate size optical telescope in the studies of the evolution of close binary stars. The informations about the structure and evolution of the close binary star DI Pegasi, extracted from its photometric observations, taken with 104 cm UPSO telescope are described in berief. Also, discussed are some meritorious research programmes with MSOT for binary star research which may lead to a better understanding of our knowledge about the stellar evolution of single as well as double stars.
