Fig. 2
Example of a design for the Keck telescope, a charge 4 vortex coronagraph, and a circular Lyot stop: a) apodizer transmission; b) intensity in the Lyot plane (log scale); and c) comparison of the Keck aperture and the apodizer. In the last figure the apodizer is represented in white, while the Keck aperture is represented in gray (wherever the apodizer transmission is zero).
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.