[daip] Request

[Eric Greisen]

Glenn Morrison writes:

 > I would like to have the option of running FLATN for multiple  
 > pointing without being forced to apply PBCOR. The reason for this is  
 > that one can derive the S/N estimate (=peak flux/peak flux error)  
 > from the non-PBCOR image then applied this to the value measured from  
 > the PBCOR results.

I do not follow your request or argument.  To add together two images
from different pointings one must make a primary beam correction to
each.  One could do that before FLATN but it is better to allow FLATN
to do it.  The addition is done correctly by noise, assuming that the
noise is constant in the uncorrected images and given by NOISE.

Eric Greisen