I was twice lucky with this image!My first good solar imaging opportunity since November!!!
I had barely setup and started acquisitions when this amazing flare on the east (left) limb suddenly popped up at 10:09 EST, hit a maximum extension around 10:17 (shown here), then dissipated by 10:26, so visible for a bit more than 15 minutes. The flare is associated with a large region where the chromosphere is pushing out “mountains of gas” above the usually spherical solar surface.
ImagingThis image is from a 40 s SER video I took with 70 ms exposures at 14 fps. Gain was set at 100 and the ROI was 2600x2600 pixels. Autostakkert3 was used to stack the best 15% (86 frames) of the 573 frames captured.
ProcessingI used ImPPG do the solar surface grayscale inversion (bright areas appear dark on the surface, dark areas appear bright), while leaving the faint prominences and flare on the limb without inversion. I set the Lucy-Richardson Deconvolution to sigma=1.8 at ,500 iterations, and used two unsharp masks ( sigma=1.6 and 3.0), using the adaptive settings and a threshold so as to not overly sharp fainter/noisier parts of the image.
My Layman's Guide to the Top 10 Things to See in Solar HaI did not include my list here, but if you missed it, or need a refresher, please go to any of my previous solar images or animations, for example:
https://www.astrobin.com/8qo75j/ 
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