Open Access
Fig. 2.
Download original image
Normalised seeing distribution in the HαNB (upper panel) and r-band (lower panel). At the distance of the Virgo cluster (16.5 Mpc), the mean values (indicated by a vertical arrow and given in parenthesis) correspond to 58 pc and 62 pc in the HαNB and r-band, respectively.
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.