  The Las Campanas Redshift Survey (LCRS) consists of 26418 redshifts of
galaxies selected from a CCD-based catalog obtained in the $R$ band. The survey
covers over 700 square degrees in 6 strips, each 1.5$\arcdeg$ x 80$\arcdeg$,
three each in the North and South galactic caps. The median redshift in the
survey is about 30000 km~s$^{-1}$. Essential features of the galaxy selection
and redshift measurement methods are described and tabulated here. These
details are important for subsequent analysis of the LCRS data. Two dimensional
representations of the redshift distributions reveal many repetitions of voids,
on the scale of about 5000 km~s$^{-1}$, sharply bounded by large walls of
galaxies as seen in nearby surveys. Statistical investigations of the mean
galaxy properties and of clustering on the large scale are reported elsewhere.
These include studies of the luminosity function, power spectrum in two and
three dimensions, correlation function, pairwise velocity distribution,
identification of large scale structures, and a group catalog. The LCRS
redshift catalog will be made available to interested investigators at an
internet web site and in archival form as an Astrophysical Journal CD-ROM.

Astrophysics