Open Access

Fig. 10

image

Download original image

Peak contrast as a function of wavelength for the GMT with different coatings. The different colors correspond to different mirror coatings. The solid lines show the contrast for a fourth-order coronagraph, and the dashed lines show the contrast for a sixth-order. The nominal aluminum coating for the GMT has the best performance. The difference in performance is even larger for the sixth-order coronagraph.

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.