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Originally Posted by Eta C
You know something, I just come to a realization. Mike possibly believes that the different frequencies represented in the SOHO imagery must come from separate solid layers.
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That's exactly what I think is happening.

The Fe ions are seen is SOHO images in the extreme UV (between 10-20 nm) with narrow filters; so in those images only the Fe in the solar surface is visible. Therefore the images are showing a uniform distribution of Fe and nothing else simply because the settings for the camera and filters prevent anything else to be seen. :roll: