Vol. 84 (1992)
In the 84-th volume of the "Bulletin of the Crimean Astrophysical Observatory of the USSR Academy of Sciences" 27 original articles are published, containing results of the investigations on actual problems in physics and evolution of stars, Sun, radiation of pulsars and VHE gamma-ray emission carried out at the Observatory. Several general characteristics of spectrographs with diffraction echelle gratings are also presented. A wide-band corrugated horn for radiotelescope is described. The computations for achromatic Schmidt systems are presented. New step motors designed for astro engineering and their capabilities are considered. The information on the Meeting on spectrophotometry and photometry of stars, carried out at the Observatory, is presented.