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There are different possibilities to find out where the direct beam would hit the detector:
 
There are different possibilities to find out where the direct beam would hit the detector:
   −
a) visualize a frame with [[VIEW]], and click (left-mouse) into the middle of the beamstop shadow (or the attenuated direct beam itself, if it is recorded). Use the pixel coordinates displayed by VIEW as ORGY ORGY (in principle you should add 1 to both numbers, because for VIEW the pixels go from 0 to NX-1 whereas for XDS they go from 1 to NX).
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a) visualize a frame with [[VIEW]], and click (left-mouse) into the middle of the beamstop shadow (or the attenuated direct beam itself, if it is recorded). Use the pixel coordinates displayed by VIEW as ORGX ORGY (in principle you should add 1 to both numbers, because for VIEW the pixels go from 0 to NX-1 whereas for XDS they go from 1 to NX).
 
Instead of a frame, one could also use FRAME.pck (the FRAME.pck written by COLSPOT is very good for this purpose).
 
Instead of a frame, one could also use FRAME.pck (the FRAME.pck written by COLSPOT is very good for this purpose).
  
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