Echelle Spectrograph For Rozhen Nao

The current practice of high-dispersion spectral observations in the Rozhen National Astronomical Observatory is presented. The advantages of the echelle spectro-graph as alternative for increasing of the efficiency of such observations are revealed. The basic components of an eshelle spectrograph are discussed and one variant, suitable for the Rozhen NAO, is described in principle. A brief survey of the current experience in the processing of eshelle spectrogrems in the NAO is given.