Clean beam parameters can also be specified by the users, by loading
the BEAM_SIZE array with values other than its default values (0,0,0).
In this case, no automatic fit will be performed.
In general, we discourage this usage, as it may result in a very improp-
er flux scaling if the beam size is inappropriate. This mode should be
reserved to special cases where the beam cannot be properly fitted, or
to have a circular beam by taking as beam size the geometrical mean of
the fitted major and minor sizes.
Fixing the beam size should be associated to the FIT /JVM command to
minimize (but not suppress !...) errors in total flux scaling.
Gildas manager
2023-06-01