Just seen this over on CN forum , poster was skeptical , as am I ...
https://spaceweathergallery.com/indiv_u ... _id=188540
Flare with white light and 12nm Ha ... ? Thoughts.
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Flare with white light and 12nm Ha ... ? Thoughts.
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Re: Flare with white light and 12nm Ha ... ? Thoughts.
A stacking artefact more likely...
http://brierleyhillsolar.blogspot.co.uk/
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Re: Flare with white light and 12nm Ha ... ? Thoughts.
Reply from Marty Wise on CN ...
"You can capture proms with wider bandpass filter systems. There's nothing behind them (space) that is brighter (ie, no photosphere)."
"You can see them with no filter at all, during an eclipse, because the disc is masked and there's nothing behind the prom."
if you're on here Marty could you elaborate please ... ?
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Re: Flare with white light and 12nm Ha ... ? Thoughts.
Steve, are you aware of the Carrington event? https://en.wikipedia.org/wiki/Carrington_Event I caught that flare in H alpha It was bright.
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Re: Flare with white light and 12nm Ha ... ? Thoughts.
You're doing well to still be typing if you caught the Carrington Event ...Martin_S wrote: ↑Mon Sep 19, 2022 12:27 pm Steve, are you aware of the Carrington event? https://en.wikipedia.org/wiki/Carrington_Event I caught that flare in H alpha It was bright.H-alpha_105531_lapl4_ap738sc.jpgScreenshot 2022-09-19 223037.jpg
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Re: Flare with white light and 12nm Ha ... ? Thoughts.
Hmm yes , I need to improve my English grammarsteveward53 wrote: ↑Mon Sep 19, 2022 12:40 pmYou're doing well to still be typing if you caught the Carrington Event ...Martin_S wrote: ↑Mon Sep 19, 2022 12:27 pm Steve, are you aware of the Carrington event? https://en.wikipedia.org/wiki/Carrington_Event I caught that flare in H alpha It was bright.H-alpha_105531_lapl4_ap738sc.jpgScreenshot 2022-09-19 223037.jpg
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Re: Flare with white light and 12nm Ha ... ? Thoughts.
So, Martin confirmed we had a small bright surge visible with a "narrowband" 12 nm Ha filtre.
Very interesting.
The Sun is full of surprise !
Very interesting.
The Sun is full of surprise !
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Re: Flare with white light and 12nm Ha ... ? Thoughts.
Indeed. I eat my words!christian viladrich wrote: ↑Mon Sep 19, 2022 1:22 pm So, Martin confirmed we had a small bright surge visible with a "narrowband" 12 nm Ha filtre.
Very interesting.
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Re: Flare with white light and 12nm Ha ... ? Thoughts.
It probably would be possible in an off band Ha filter tuned high which shows more photosphere.
In a 12nm wide Ha filter it would indeed be a surprise. That was an intense one!! Martin's image shows some double limb and chromosphere too.
James
In a 12nm wide Ha filter it would indeed be a surprise. That was an intense one!! Martin's image shows some double limb and chromosphere too.
James
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Re: Flare with white light and 12nm Ha ... ? Thoughts.
Martin's image is from a Hydrogen-alpha rig not a "white-light + 12nm Ha" set-up ...DeepSolar64 wrote: ↑Mon Sep 19, 2022 2:36 pm It probably would be possible in an off band Ha filter tuned high which shows more photosphere.
In a 12nm wide Ha filter it would indeed be a surprise. That was an intense one!! Martin's image shows some double limb and chromosphere too.
James
viewtopic.php?t=38110
His chromosphere image from the same time is just confirming that there was indeed a flare and prominence there at the time ...
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