Spectroscopy of "Big Trio" objects using the "Scorpio" spectrograph of
  the 6-m telescope of the Special astrophysical observatory
  We present the results of spectroscopy of 71 objects with steep and
ultra-steep spectra ($\alpha<-0.9$, $S\propto\nu^\alpha$) from the "Big Trio"
(RATAN-600-VLA-BTA) project, performed with the "Scorpio" spectrograph on the
6-m telescope of the Special Astrophysical Observatory (Russian Academy of
Sciences). Redshifts were determined for these objects. We also present several
other parameters of the sources, such as their R-magnitudes, maximum radio
sizes in seconds of arc, flux densities at 500, 1425, and 3940 MHz, radio
luminosities at 500 and 3940 MHz, and morphology. Of the total number of radio
galaxies studied, four have redshifts 1<z<2, three have 2<z<3, one has 3<z<4,
and one has z=4.51. Thirteen sources have redshifts 0.7<z<1 and 15 have
0.2<z<0.7. Of all the quasars studied, five have redshifts 0.7<z<1, seven have
1<z<2, four have 2<z<3, and one has z=3.57. We did not detect any spectral
lines for 17 objects.
