Aerospace Instrument-Making Annotation << Back Analysis of the Influence of Operational Factors on the Efficiency of Functioning of Stellar Orientation Devices Slatova E.V., Sergeev V.A. The operating conditions of onboard optical-electronic means are considered. The main factors of outer space are determined and an analysis of their influence on the efficiency of functioning of stellar orientation devices is carried out. The impact on the optical system of devices and the receiver of optical radiation is shown, which leads to a decrease in detection ability and the occurrence of additional errors in measuring the coordinates of navigation stars. The main methods for reducing the adverse impact on the functioning of stellar orientation devices are given. Keywords: spacecraft, optical-electronic means, stellar orientation devices, optical interference, coordinate measurement error. DOI: 10.25791/aviakosmos.5.2025.1480 Pp. 20-30.