The Boston University-Five College Radio Astronomy Observatory Galactic Ring
Survey is a new survey of Galactic 13CO (1-0) emission. The survey used the
SEQUOIA multi pixel array on the Five College Radio Astronomy Observatory 14 m
telescope to cover a longitude range of l = 18 deg-55.7 deg and a latitude
range of |b| < 1 deg, a total of 75.4 square degrees. Using both
position-switching and On-The-Fly mapping modes, we achieved an angular
sampling of 22 arcsec, better than half of the telescope's 46 arcsec angular
resolution. The survey's velocity coverage is -5 to 135 km/s for Galactic
longitudes l 40 deg. At
the velocity resolution of 0.21 km/s, the typical rms sensitivity is
sigma(TA*)~0.13 K. The survey comprises a total of 1,993,522 spectra. We show
integrated intensity images (zeroth moment maps), channel maps,
position-velocity diagrams, and an average spectrum of the completed survey
dataset. We also discuss the telescope and instrumental parameters, the
observing modes, the data reduction processes, and the emission and noise
characteristics of the dataset. The Galactic Ring Survey data are available to
the community at www.bu.edu/galacticring or in DVD form by request.Comment: Accepted ApJ. 21 pages (ApJ emulate style). 12 figure