Fig. 12
Download original image
Examples of on-sky focal plane images with artificial DM speckles at 10 λ/D separation for the following: the reference (left panel; only bump mask and Lyot stop in the beam), fPIAA (central panel; bump mask, Lyot stop, and the forward PIAA lenses set in the beam), and fPIAA+iPIAA (right panel; bump mask, Lyot stop, and both forward and inverse PIAA lenses sets in the beam). Mind that in the right-most panel the focal plane mask is also in the beam. The inverse PIAA lenses restore the round shape of the off-axis speckles.
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.