High-resolution échelle spectrograph at Skalnaté Pleso Observatory

This is the authors' abstract. We don't add key points for this paper.

A clone of échelle spectrograph MUSICOS (MUlti-SIte COntinuous Spectroscopy) is mounted in the Nasmyth-Cassegrain focus of the 1.3m telescope at Skalnaté 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 Å.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.