was not originally intended as a reduction package for single-dish data and cannot be considered as such
today. However, because of the similarity of single-dish data taken at “random” pointings on the sky to
interferometric data taken at “random” locations in the uv plane,
was seen as a system to be used to solve
large imaging problems arising from single-dish observations. Many of the
uv-data tasks are able to do
something sensible — or even desirable — with single-dish data and a few special tasks to process single-dish data
have been written. The present chapter contains a discussion of the representation of single-dish data
in
followed by a description of how such data may be calibrated, corrected, converted into
images, and analyzed by
. A final section on using single-dish observations to improve the
imaging of interferometric data represents what little we now know about this potentially important
process.