The SHG guys as well as others may be interested to read this paper.
http://articles.adsabs.harvard.edu//ful ... 9.000.html
Solar flares and their observation
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Solar flares and their observation
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
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"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
https://groups.io/g/astronomicalspectroscopy
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Re: Solar flares and their observation
The illustration of the flare emission profile, to me shows Severny's "moustache" very well. My wife thinks it's Mick Jagger!!!
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Re: Solar flares and their observation
Interesting Ken, thanks
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!
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Re: Solar flares and their observation
Thanks for the interesting link, Ken.
You've mentioned the "moustache" flare spectrum before and I thought that would be an interesting observation to make someday.
Turns out I've already photographed it (in Ca H)! Here's my earlier posting of the spectrum:
http://solarchat.natca.net/viewtopic.php?f=8&t=12329
Here's a reworked diagram showing plotted spectral profiles of the flare itself and the (nearby) disk. The blue spectral plot is a moustache (kind of)!
Admittedly, the Ca H (and K) lines are more complicated than H alpha so the difference between flare and disk may not be as pronounced in shape. Big difference in intensity, though.
Also, the difference spectrum exhibits a number of smaller peaks (aside from the "big two"), showing that the flare seems to "fill in" many of the weaker, narrow absorption lines within the Ca H absorption profile.
Cheers.
Peter.
You've mentioned the "moustache" flare spectrum before and I thought that would be an interesting observation to make someday.
Turns out I've already photographed it (in Ca H)! Here's my earlier posting of the spectrum:
http://solarchat.natca.net/viewtopic.php?f=8&t=12329
Here's a reworked diagram showing plotted spectral profiles of the flare itself and the (nearby) disk. The blue spectral plot is a moustache (kind of)!
Admittedly, the Ca H (and K) lines are more complicated than H alpha so the difference between flare and disk may not be as pronounced in shape. Big difference in intensity, though.
Also, the difference spectrum exhibits a number of smaller peaks (aside from the "big two"), showing that the flare seems to "fill in" many of the weaker, narrow absorption lines within the Ca H absorption profile.
Cheers.
Peter.