[CLEAN\]UV_CONTINUUM [Naver] [/INDEX Value [Frequency]]
[/RANGE Min Max TYPE]
Transform the (presumably spectral line) UV data set loaded by READ UV
into a "continuum" data set.
The transformation selects line channels defined by the /RANGE option,
average them by groups of Naver contiguous channels, and concatenate the
resulting visibilities into a "continuum" UV table. If not present,
Naver is derived from the current field of view MAP_FIELD and required
precision, MAP_PRECIS to avoid bandwidth smearing at field egdes.
For each output channel, and for all visibilities, the U and V coordi-
nates are rescaled to the mean observing frequency, and the resulting
(single-channel) visibilities are concatenated into the "continuum" UV
data set. The continuum dataset becomes the current UV data. Flagged
channels are ignored: this allows to mask channels containing spectral
lines (see UV_FILTER).
If no /RANGE option is defined, all channels are selected.
Subsections
Gildas manager
2023-06-01