[daip] Cell size

Johan van der Walt johan at fskdjvdw.puk.ac.za
Mon Apr 30 05:51:14 EDT 2001


I've been experimenting with the cell size parameter in IMAGR when
cleaning images. There is only one continuum source on this image. 

I noticed that the peak flux increases significantly if I decrease
the cell size. The S/N remains more or less the same as the cell size
changes.

Since the aim of this project is to check the non-detection of radio
continuum emission by other authors it is seems important to me that
a reliable peak flux density can be derived. 

How should I handle this increase in peak flux with decreasing cell
size? The Cookbook says that there should be at least three or four
cells across the main lobe of the dirty beam. Is there an upper limit
to the number of cells?

Thanks

Johan




More information about the Daip mailing list