[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 components.
The SPECTRAL_CLEAN method can improve deconvolution of spectrally well
resolved faint line wings, yielding more accurate integrated line flux-
es, at the cost of some extra computations. However, SPECTRAL_CLEAN can
be hampered by strong velocity gradient, that require supports that dif-
fer widely among channels.
Standard CLEAN control parameters apply. However the METHOD must allow
retrieving Clean Componentes: MRC is thus excluded. SPECTRAL_CLEAN can
also work on Mosaics.
Subsections
Gildas manager
2023-06-01