A southern galactic survey at 843 MHz.

The Molonglo Observatory Synthesis Telescope, operating at 843 MHz, is currently surveying the southern Galactic plane. The resulting maps provide images of the radio continuum with a synthesized beamwidth or 43 x 43 arsec cosec delta and a noise level of about 1 mJy. The survey involves 12-h synthesis observations of over 400 fields on a predefined set of field centers. About half the fields have been observed to date, and the survey is scheduled for completion in 1990. A noteable feature in many of the fields is the occurrence of widespread diffuse filamentary structure, in addition to the expected supernova remants and H II regions.