Free Access
Fig. 6
Spot of NOAA 11757, observed on 31 May 2013, 12:35 UT at 589 nm. This is a subfield of Fig. 1, focusing on the spot and enhancing the umbral contrast by unsharp masking. The white arrow points at the disc centre. Tick mark units in arcsec.
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.