Dear Rietvelders,

Do you know an efficient/precise way to determine the beam center for small 
angle scattering images in Fit2d? I have no data for standard sample. Circles 
are observed but very blurred, so it is hard to decide the beam center. There 
is a "contour plot" command but you cannot change the number of contours, so it 
is not very helpful. Sure one can zoom the image, print and draw some lines by 
hand, but that's not very professional.
Any suggestions?

Sincerely,
Ling Yang
Bldg. 8610, MS 6494
Oak Ridge National Laboratory
Oak Ridge, TN 37830
Tel: (865)576 4845
Fax: (865)574 1753

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