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Figure 12
Typical dependence of the speckle contrast [\beta] versus the detector aperture [\delta] (a), the variations of the SNR (or quality, in arbitrary units) for a point detector (b) and with [\delta] as the CCD pixel size (c). Curves (b) and (c) cannot be compared. In the case of an area detector, the 22 µm pixel size, at this 2 m distance, is an optimum, and one should not bin pixels of the CCD.

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ISSN: 2053-2733
Volume 63| Part 2| February 2007| Pages 87-107
doi:10.1107/S010876730605570X
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