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CLEAN_NKEEP

    This is an integer specifying the minimum number of Clean components be-
    fore  testing if Cleaning has converged. The convergence is criterium is
    a comparison of the cumulative flux evolution separated  by  CLEAN_NKEEP
    components. If th

    IF  CLEAN_NKEEP  is 0, CLEAN will ignore this convergence criterium, and
    continue clean until the CLEAN_NITER, CLEAN_ARES or CLEAN_FRES  criteria
    indicate to stop.

    With  CLEAN_NKEEP  >  0,  CLEAN  will explore the stability of the total
    clean flux over the last CLEAN_NKEEP  iterations. For a positive  (resp.
    negative)  source, if the Clean flux becomes smaller (resp. larger) than
    the Clean flux CLEAN_NKEEP iterations earlier, CLEAN will stop.

    Using CLEAN_NKEEP about 70 is a reasonable value.   Some  special  cases
    (faint extended sources) may require larger values of CLEAN_NKEEP.


Gildas manager 2023-06-01