Free Access
Fig. 1

Squared visibility of a uniform disk (solid line) and of a limb-darkened disk (dashed line) for a star of 1.17 mas of diameter, a wavelength of 720 nm and a baseline ranging from 0 to 330 m. The LDD is sensitive close to the zero and in the second lobe of visibility, where it is higher than for a UD.
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.