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Figure 2
Left column: 2D map of the surface deformation: (a1) cryogenic mirror for Kh = 3.07, Kv = 0; (b1) cryogenic mirror for Kh = 0, Kv = 3.07; (c1) water-cooled mirror Kh = 3.07, Kv = 0; (d1) water-cooled mirror Kh = 0, Kv = 3.07. Central column: the extracted 1D profiles (a2), (b2), (c2) and (d2), respectively. Right column: the focused image with these profiles are given in (a3), (b3), (c3) and (d3), respectively. The FWHM values are: 3.85, 3.91, 8.53 and 36.34 µm, respectively (3.68 µm for the undeformed one) and the Strehl ratios are 0.99, 0.98, 0.43 and 0.11, respectively (1 for the undeformed mirror).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 27| Part 5| September 2020| Pages 1141-1152
https://doi.org/10.1107/S1600577520009522
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