RÉSUMÉ

The Fourier analysis method of the time series is applied to estimating the rotation of structural formations in the Sun atmosphere observable in the line Hel of 1083 nanometers from the Earth. On the basis of the original method of the solar disk images discretization the time series of average values of the images intensities in the 3° heliographic latitude zones on the time interval relevant to 50 Sun rotations are obtained. By the algorithms implemented in the software, estimation is made of the rotation period of structures, spectral densities and power of processes in the latitude zones. The results can be applied to the quantitative characteristic of differential rotation of the solar formations.