SPECTRAL_CLEAN
[BUNDLES\]SPECTRAL_CLEAN MODE [Control ]
Perform a Clean with different spectral scales.
MODE can be
FFT Clean the Fourier Transform of the spectra
WAVE Clean a Wavelet Transform of the spectra
DUAL Ns Clean at two different spectral resolutions
MULTI Ns Clean at two (or more) spectral resolutions.
Instead of Cleaning separately individual channels, SPECTRAL_CLEAN cleans
either Spectral Transform of the data cube (along the velocity axis), and
performs the inverse transformation to restore the channel-based Clean com-
ponents.
The SPECTRAL_CLEAN method can improve deconvolution of spectrally well re-
solved faint line wings, yielding more accurate integrated line fluxes, at
the cost of some extra computations. However, SPECTRAL_CLEAN can be ham-
pered by strong velocity gradient, that require supports that differ widely
among channels.
Standard CLEAN control parameters apply. However the METHOD must allow re-
trieving Clean Componentes: MRC is thus excluded. SPECTRAL_CLEAN can also
work on Mosaics.
Subsections