[daip] Selfcal question

[Eric Greisen]

Hanno Spreeuw wrote:
> Hello,
> 
> I was looking at the IMAGR helpfile, if OVERLAP=2 "components from each
> field are restored to all fields that they overlap".
> Does that mean that the sum of all CC components from all facets is 
> larger than the total cleaned flux density?
> How does that work out for selfcalibration? If I next run CALIB, solmo 
> 'A&P', cparm[2]=0, wouldn't the total flux be overestimated?

No - of course not.  One should not add Gaussian components back to a 
point CC file - it would mean that gridded would no longer be allowed 
and it would make the mistake to which you allude.  The Gaussians are 
put in the image but not the CC file.  For self-cal to work you must 
include all facets not just the point ones.  The same thing is true of 
overlap 1 and 2 modes without the multi-resolution.

Eric Greisen