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Figure 3
The wide opening angle of the slits, which is required to capture a region in reciprocal space with a two-dimensional detector, results in a non-uniform background across the detector (indicated in grey in the figure). This background originates from scatterers other than the sample, for example a beryllium window. This means that when taking two images at slightly different detector positions, such that there is some overlap between the two captured regions, the background intensity in the overlapping region is not constant.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 48| Part 4| August 2015| Pages 1324-1329
https://doi.org/10.1107/S1600576715009607
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