Fine structure in radio sources at 8 1 -5 MHz-111. The survey

A survey of radio sources which exhibit interplanetary scintillations has been carried out with the Cambridge i8 000 m2 array at MHz. The methods of observation, and of determination of angular structure on a scale 0" 2 to 2" O, are discussed and a catalogue lists the structure of 1500 4C sources between declinations - 120 and +900, roughly 6o per cent of which scintillate. An analysis of the results will be presented elsewhere.