Download original image
Coordinate transformed photograph (top, 1044 UT) and hand-made sketch (bottom, 1037 UT) of the auroras, as observed from Memambetsu Magnetic Observatory on February 11, 1958, at a view looking toward the geographic north. Elevation angle and azimuth angle grids are shown every 10°.
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.