Combined Continuum and Spectral line imaging

##
Combined Continuum and Spectral line imaging

An alternative to the method described in Sec. is to use the Continuum image, or more precisely the Continuum Clean Components, as a starting point for the deconvolution of the continuum+line data. The first step is to save the Continuum Clean Components:
uv_preview
uv_filter
uv_map /cont
clean
write cct Continuum.cct
Re-imaging the data set with the continuum included can be done by uv_filter /reset
uv_map
read cct Continuum.cct
clean /restart
uv_restore (as an optional step).

UV_FILTER /RESET reset the weights of the line emission channels to their proper values. Reading again the Clean Component list is needed because UV_MAP destroys this list. The Clean Component list of the continuum data is then used as a starting value for every spectral channel by the CLEAN /RESTART.