[daip] problems measuring flux

[Eric Greisen]

On your 2nd question - the JY/BEAM is the fundamental unit produced in
the Fourier transform (IMAGR, MX, etc).  It is a bad unit in that the
beam area is 0 when the dirty beam is integrated to infinity (unless
you have a zero spacing).  But it is what we have - when the beam and
image first come out they have an arbitrary scaling recflecting
convolving functions, data weights, data sampling etc etc.  The peak
0of the dirty beam is set to 1.0 and the image is scaled by the same
factor - hence the JY/BEAM since the beam is just an image of a 1.0 Jy
source at the origin.  Units of JY/PIXEL are not generated in normal
FFT imaging.

ERic Greisen