Combined Continuum and Spectral line imaging
Keywords: imager

Next: The CONTINUUM image Up: Continuum emission Previous: Split Continuum and Spectral Contents Index

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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:
magenta `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 magenta `uv_filter /reset`
`uv_map`
`read cct Continuum.cct`
`clean /restart`
`uv_restore` (as an optional step).

magenta`UV_FILTER /RESET` reset the weights of the line emission channels to their proper values. Reading again the Clean Component list is needed because magenta`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 magenta`CLEAN /RESTART`.