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Fig. 1

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Gaia focal plane. The viewing directions of both telescopes are superimposed on this common focal plane which features 7 CCD rows, 17 CCD strips, and 106 large-format CCDs, each with 4500 TDI lines, 1966 pixel columns, and pixels of size 10 μm along scan by 30 μm across scan (59 mas  ×  177 mas). Star images cross the focal plane in the direction indicated by the arrow. Picture courtesy of ESA – A. Short.

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