High-resolution echelle spectrograph at Skalnate Pleso Observatory

A clone of e ' chelle spectrograph MUSICOS (MUlti-SIte COntinuous Spectroscopy) is mounted in the Nasmyth-Cassegrain focus of the 1.3m telescope at Skalnate ' Pleso Observatory. The spectrograph is a cross -dispersed, bench -mounted, fiber -fed instrument giving a resolving power in the range of 25 000 to 38 500 (FWHM). Fifty-six orders cover the spectral range between 4250 and 7375 A. The spectrograph is primarily used to observe novae, symbiotic stars, pulsating variables, binaries, and multiple stellar systems. The radial -velocity stability (100 - 200 m s-1) is sufficient to detect easily the orbital motion of hot Jupiters orbiting bright stars. In order to improve the spectrograph throughput and radial -velocity stability, several technical changes are planned in the near future.