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Fig. 2


Maximum counts (in ADU) measured in the 190 individual frames obtained in the B_Ha filter. The gray shaded areas correspond to the 76 selected images (see text), while the hatched red area corresponds to the best 47 individual exposures.

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.