High-resolution spectrographs on medium-diameter telescopes

The problem of high-resolution spectroscopic observations on telescopes with diameters of D = 0.5–1.5 m is considered. Examples of the optimum technical solutions and survivability of certain telescopes and methods of observation are given in retrospect. Improvements in the technique of spectroscopy allow one to also consider the potential of those instruments that were not originally intended for use in high-resolution spectroscopy. Arguments in favor of using medium-diameter telescopes in modern high-resolution spectroscopy are discussed. This review is connected to the 100th anniversary of the 122-cm telescope of the Crimean Astrophysical Observatory.