  We present results from a spectroscopic study of ~4000 galaxies in a 6.2
square degree field in the direction of the Aquarius supercluster and a smaller
typical field region in Cetus, down to R<19.5. Galaxy redshifts were measured
using the Two Degree Field system on the Anglo-Australian Telescope, and form
part of our wider efforts to conduct a spectro-photometric and weak
gravitational lensing study of these regions. At the magnitude limit of the
survey, we are capable of probing L_* galaxies out to z~0.4. We construct
median spectra as a function of various survey parameters as a diagnostic of
the quality of the sample. We use the redshift data to identify galaxy clusters
and groups within the survey volume. In the Aquarius region, we find a total of
48 clusters and groups, of which 26 are previously unknown systems, and in
Cetus we find 14 clusters and groups, of which 12 are new. We estimate centroid
redshifts and velocity dispersions for all these systems. In the Aquarius
region, we see a superposition of two strong superclusters at z=0.08 and
z=0.11, which both have estimated masses and overdensities similar to the
Corona Borealis supercluster.
