Halpha spectroheliogram of today, h 7.35 a.m UT.The first image is the image extracted from the pixel on the very center of the line, of 0.02 Å bandpass; the second is the average of 30 frames centered on the line (one for each pixel) of the video of the scan, with about 0.6 Å of bandpass.
The difference in the visibility of the details, however small,is perceptible.
Fulvio Mete
H alpha spectroheliograms comparison
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fulvio.mete
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H alpha spectroheliograms comparison
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highfnum
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fulvio.mete
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Montana
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Re: H alpha spectroheliograms comparison
Absolutely wonderful!!! certainly plenty of filaments to add to the drama 
Alexandra
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marktownley
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Re: H alpha spectroheliograms comparison
Very good!
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!