[daip] VPLOT NMAPS

[Eric Greisen]

Hans-Rainer Kloeckner wrote:
> 
> Hi Eric et al.
> 
> 
> I try to plot my model and the visibilities in VPLOT and it seems that 
> there is a restriction I do not understand.
> 
> VPLOT will stop accepting fluxes from CC components once I will include 
> images (66,67,68,69) that are far off the phase centre (please have a 
> look at the attached image; the sup-images do all have the same number 
> of CC tables). Just to clarify I used setfc to determine the facset.
> 
> 
> Including the first 65 images
> FACSET: 10.716795 Jy found from 24 components
> 
> Now including the first 66 images
> FACSET: 0.000000 Jy found from 0 components
> 
> 
> I also got a message from FLATN saying that:
>          FLATN1: Field 66 not included in output - outside image 
>          FLATN1: Field 67 not included in output - outside image 
>          FLATN1: Field 68 not included in output - outside image 
>          FLATN1: Field 69 not included in output - outside image 
> 
> 
> 
> 
> It seems that there is a procedure doing a to restricted job in checking 
> if an image is within a certain range of the phase centre of the UV data. 
> 
> Maybe this is also related why I get sharp cuts at the borders.
> 
> 
> I'm not sure if this is a bug. Could you please provide me with some 
> insight.

It is the number of Clean components - limited in VPLOT to 50000.  I see 
no reason not to raise that limit to 100000, but it is important that 
the CCs be compressed.  IMAGR does that when OVERLAP > 0.

ERic Greisen