CALCULATION OF ABERRATION COEFFICIENTS FOR A CYLINDRICAL MIRROR
Angular аberration coefficients for a cylindrical mirror up to the fourth order in the vicinity of the azimuthal angle <i>φ</i><sub>0</sub> = 0 and in the vicinity of an arbitrary angle <i>ϑ</i><sub>0</sub> value are analytically obtained. A method is developed for calculating aberration coefficients of arbitrary order and in the vicinity of an arbitrary point based on the results of calculating several trajectories. Analytical and numerical methods for calculating aberration coefficients up to the fourth order are productive in the vicinity of the point ( <i>φ</i><sub>0</sub> = 0, <i>ϑ</i><sub>0</sub>) that coincide with high accuracy.