  Based on high-resolution spectroscopy performed with the NES echelle
spectrograph of the 6-m telescope, we have studied the peculiarities of the
spectrum and the velocity field in the atmosphere and envelope of the cool
supergiant V1027 Cyg, the optical counterpart of the infrared source IRAS
20004+2955. For the first time, a splitting of the cores of strong absorptions
of metals and their ions (SiII, NiI, TiI, TiII, ScII, CrI, FeI, FeII, BaII) has
been detected in the stellar spectrum. The broad profile of these lines
contains a stable weak emission in the core whose position may be considered as
the systematic velocity Vsys=5.5 km/s. Small radial velocity variations with an
amplitude of 5-6 km/s due to pulsations have been revealed by symmetric low-
and moderate-intensity absorptions. A long-wavelength shift of the H$\alpha$
profile due to line core distortion is observed in the stellar spectrum.
Numerous weak CN molecular lines and the KI 7696 \AA\ line with a P Cyg profile
have been identified in the red spectral region. The coincidence of the radial
velocities measured from symmetric metal absorptions and CN lines suggests that
the CN spectrum is formed in the stellar atmosphere. We have also identified
numerous diffuse interstellar bands (DIBs) whose positions in the spectrum,
Vr(DIBs)=$-12.0$ km/s, correspond to the velocity of the interstellar medium in
the Local arm of the Galaxy.
