We measured redshifts and velocity dispersion for two
ACO clusters and a new cluster we identified on
prime-focus plates, which had been previously included as part of the poor
ACO cluster S0102 by Abell et al. (1989).
As expected, they are medium-distant clusters, with redshifts
between 0.16 and 0.25.
For A 3889 and Cl 0053-37, we estimated also
virial masses, finding respectively 
and 
.
We have presented strong evidence for a supercluster or wall at
, to which Cl 0053-37 belongs.
This research has made use of: DIRA2,
developed by the Astronet Working Group on Database and Documentation
in Bologna, Italy; the NASA/IPAC
Extragalactic Database (NED) which is operated by the Jet Propulsion
Laboratory, California Institute of Technology, under contract with the
National Aeronautics and Space Administration;
the Digitized Sky Surveys (DSS), which were produced at
the Space Telescope Science Institute under U.S. Government grant NAG
W-2166. The images of these surveys are based on photographic data
obtained using the Oschin Schmidt Telescope on Palomar Mountain and
the UK Schmidt Telescope. The plates were processed into the present
compressed digital form with the permission of these institutions.