Transit of Venus in Hydrogen alpha | Rod Pommier

Rod Pommier
Location of photo
Haleakala, Maui, Hawaii, USA
Date/Time of photo
2012-06-05 12:28 16:03 HST
Celestron Super C8 Plus/fork mount, Byers drive. Canon EOS 20D DSLR at ISO 1600, 1/1250 second exposure. Hydrogen alpha solar filter at f/40.
The transit of Venus of 2012-06-05 in hydrogen alpha, near the time of mid-transit. The image shows the hydrogen alpha network on the disk of the Sun, sunspots, which appear much smaller than in white light images, bright plages around sunspot groups, solar filaments (prominences in silhouette against the brighter solar disk) prominences around the edge of the chromosphere, and the silhouette of Venus.
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