Gaia Data Release 1
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Fig. 8

image

Reconstruction of the PSF based on the LSFs seen in Fig. 7. The PSF model used by IDT when processing two-dimensional windows is the cross-product of one-dimensional AL and AC LSFs. It is clear that, although the gross structure is present, the asymmetry information has been lost. The field measures 1.2′′ (AL) by 2.8′′ (AC).

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