Experimental investigation of laboratory prototype of spacecraft optical telescope assembly in laboratory conditions

In this paper the specifications of precision system of ensuring thermal regime of spacecraft optical telescope assembly designed for Earth remote sensing are considered. The laboratory model of thermal control system is designed for experimental investigations in the vacuum chamber. Experimental investigations of laboratory model of thermal regime under conditions of simulating space enviroment (low space temperature, direct and reflected from the Earth solar flux, Earth heat flux) is carried out. High temperature stability and low power consumption of the system is shown.