The observations have been made at several frequencies with different
configurations. We have 20 cm (A-array), 6 cm (B-array) and 2 cm (C-array) for
a matched configuration ( resolution), 6 cm (A-array) and 2 cm (B-array)
for high resolution (
FWHM) maps and 2 cm (A-array) for a map with
resolution. There is also 90 cm (C-array) data available, but they can only be
used as a fluxmeasurement, because the object is unresolved.