... Archive 2003: . As a result of development of image slicers, polarization analyzers and reduction technique, the limiting magnitude of spectral observations at BTA with high spectral resolution (up to R=80000) has been increased by 3 times, the limiting magnitude of spectropolarimetric observations increased from 3 to 8 times (in the red and UV ranges, respectively). ... Archive . ...

. N asmyth E chelle- S pectrometer (NES) . Here we present first NES-spectra: . The spectrum of the dwarf (F5 V) we derived with the NES (first light) . The spectrum of the same dwarf we derived with the BTA+NES in combination with the Jodine cell (first light) . The spectrum of the magnetic star HD153882 we derived with the BTA+NES in combination with the Zeeman device . The spectrum of the born-again Sakurai's object (about 11 mag) we derived with the BTA+NES on July, 15, 1998.