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If Auto calibration doesn't work for your data, try Manual Calibration.

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Manual Calibration

For images where the beam centre is off the detector, there are few complete rings or there is a high tilt, try Manual Calibration (requires starting guess for energy and experimental geometry)

Theory

There are two different methods used in DAWN to calibrate powder diffraction images, Ellipse Parameter Calibration and Point Parameter Calibration. Here is a quick introduction to the calibration routine and the differences between the two methods.

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