Detector geometry distortion from diffraction data

[kif]

For large detectors, manufacturing grids with a µm precision is pretty challenging. Jon's method looks simpler to use from an experimental point of view if:

• Enough calibration images were taken with different position for the beam-center (ideally in all corners)
• Rings are thin and isotropic (not spotty)
• The density of ring is such that any module has at least one ring on any calibration image.
• Diffraction angle is small enough to neglect parallax effect

Adapted from https://doi.org/10.3390/cryst12020255