Free Access

Fig. 3

thumbnail

Contrast profiles (C) of a time series of coronagraphic images recorded at t0 (dashed blue line) and t0 + 3 min (dashed red line), both are which fairly identical; the detectability (σ) of the difference between both (differential image, full black line), and the associated photon-noise level (pink line) and readout noise (pink dashed line).

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.