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![[Figure 5]](ve5058fig5mag.jpg)
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Figure 5
NFP reconstruction of the object, recorded at slit settings of 400 µm × 400 µm (h × v) (beamline exit) and 220 µm × 270 µm (mirror). (a) Phases of the NFP reconstruction for the Siemens star pattern. Scale bar: 10 µm. The insets show detail of the 0.5 µm marker (top) and a region of the rays (bottom). Scale bar: 2 µm. (b) Reconstruction using the contrast transfer function algorithm (Cloetens et al., 1999  ) with the same input as (a). Same scale and colour bars as in (a). The probe reconstructions corresponding to (a) are shown in (c), along with (d) the corresponding line profiles through the focus. Scale bar for (c): 1 µm. Note that the focal width is smaller than in Fig. 4, owing to the larger slit opening. |
![[Figure 5]](ve5058fig5.jpg)
 | JOURNAL OF SYNCHROTRON RADIATION |
ISSN: 1600-5775
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