Open Access

Fig. 3.


Measured intensity in the Lyot stop plane when the beam of the internal source is centered on the vortex coronagraph. The classical Lyot stop is encircled in green. The SCC reference hole used during the run is encircled in red. The rest of the image should be dark as the Lyot mask should stop the star light. However, the mask is not perfectly black and reflected light is detected close to the Lyot stop.

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.