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Figure 4
Interferograms showing the alignment of the LUPI to the M1 mirror. OF was used to provide back-reflection on M1. (a)–(c) Progressive vertical alignment leads to the rotation of the astigmatic `cross' pattern. (d)–(f) Good vertical and progressive horizontal alignment. Some residual vertical misalignment becomes visible in image (f).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 26| Part 1| January 2019| Pages 18-27
https://doi.org/10.1107/S160057751801576X
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