Fig. 13

Residual diffracted sunlight level at 1.3 R⊙ for the hybrid externally occulted Lyot coronagraph SEL, in logarithmic scale. The horizontal axis represents the radius of the internal occulter set in O′, in R⊙ units. The vertical axis represents the radius of the Lyot stop set in plane C, in millimeters units – 1: scale with respect to plane A.
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.