I encountered a report about the predicted corona and wondered how it would compare to what we actually saw. I do not know the orientation of either the simulation or of my image (where is the solar north pole?). Are these similar?
The image above shows field lines of a solar coronal magnetic model based on measurements from the National Solar Observatory Integrated Synoptic Program (NSO/NISP) one solar rotation, or 27.2753 Earth days, before the August 21, 2017 total solar eclipse. The view offers and example of what observers of the total solar eclipse will see on August 21st. The solar disk has been occulted leaving only the off-limb magnetic structure visible. The visible field lines indicate how the corona during a total solar eclipse would appear according to the model. The solar wind flows outward from the Sun along open field lines. Closed field lines, where the lines loop back onto the Sun, trap coronal plasma. As a result, the corona in closed structures appear brighter than the open corona in eclipse images. Closed and open lines are shown white and dark grey in the plot. The largest closed structures represent the helmet streamers that we see during the total solar eclipse. Credit: National Solar Observatory Read more at: https://phys.org/news/2017-07-national-solar-observatory-corona-august.html#jCp
My HDR composite spanning 14 stops of exposure and showing some of the structure in the corona.
Update 20170906: I still don’t know the absolute orientations of either image, but found that there was a correlation of the field lines that seem to stream directly out from the Sun. See if this is a visual match:
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