Free Access

Fig. 5

image

Histograms of f, α, v0, and σ (with ) obtained when fitting the along-scan (top) or across-scan (bottom) LSF model (Eq. (7)) to the 448 LSFs resulting from combining 14 SM CCDs, 16 stellar spectral-energy distributions, and two values of interstellar extinction (see Fig. 4). The normalisation constant A has been frozen to unity in all fits. The across-scan direction refers to average across-scan motion. Since the Gaia pixel ratio (10 × 30 μm2, i.e., 1:3) effectively cancels the Gaia aperture ratio (1.45 × 0.50 m2, i.e., 3:1), the along- and across-scan LSFs have roughly the same size (σ ~ 1 pixel).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.