This is the minimal flux in the dirty map that the program will consider
as significant. Alternatively, the threshold can be specified as a
fraction of the peak flux using CLEAN_FRES. Once this level has been
reached the program stops subtracting, and starts the restoration phase.
The unit for this parameter is the map unit (typically Jy/Beam). The
parameter should usually be of the order of magnitude of the expected
noise in the clean map.
If 0, CLEAN_FRES will be used instead. If all of CLEAN_NITER, CLEAN_ARES
and CLEAN_FRES are 0, an absolute residual equal to the noise level will
be used for CLEAN_ARES.
Short form is ARES.
This may be overseded by the /ARES option which imposes a limit per
plane through an array of values.
Gildas manager
2023-06-01