Slow and Rapid Changes of the Radial Velocities in the Symbiotic Binary CH Cygni
In the period 1982–1986, new 98 radial velocities (RVs) were deter-mined (at the figures denoted by ⃞). All spectrograms were obtained at the Toruń Observatory. RVs were measured at the Skalnaté Pleso Observatory. The main results are summarized in the figures 1–3. The phase is determined from the middle position of the hot component eclipse (JD 2 446 272) and from the minima difference observed in U light curve (5700d) (Mikolajewski et al., 1987).