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That solar prominence from yesterday is still visible, and still amazing.
https://gs671-suske.ndc.nasa.gov/
gives an idea of the size, though not the shape.
(I'm forever amazed that with all the solar images online, none of them is at all similar to what you see visually in an h-alpha telescope.)
gs671-suske.ndc.nasa.govHelioviewer.orgSolar and heliospheric image visualization tool.
Actually this helioviewer is pretty close to what I'm seeing:
https://gong2.nso.edu/products/scaleView/view.php?configFile=configs/hAlpha.cfg&productIndex=3
It shows the shape of the big prominence at upper right, plus all those arcs and flares on the disk.
gong2.nso.eduSolar data viewer