Still hampered by strong winds but managed to get a reasonable MiniSHG image in the wavelength of Mg (b2)
All the current active areas and regions of faculae visible - AR 2924/5/6/7/8
plus these a bit of faculae up in the north east....
Solar activity 13th jan 2022 - Mg (b2)
- Merlin66
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Solar activity 13th jan 2022 - Mg (b2)
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Re: Solar activity 13th jan 2022 - Mg (b2)
Ken,
This one certainly is sharper than your last Mg ( b2 ) images. I noticed the plage/faculae right away. The penumbrae of the sunspots can be seen a bit too!
James
P.S. Keep these less used " flavors " coming!!
This one certainly is sharper than your last Mg ( b2 ) images. I noticed the plage/faculae right away. The penumbrae of the sunspots can be seen a bit too!
James
P.S. Keep these less used " flavors " coming!!
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Re: Solar activity 13th jan 2022 - Mg (b2)
This is excellent Ken!
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 activity 13th jan 2022 - Mg (b2)
Nice image, Ken, thank you. Can you please elaborate a bit on the views in the magnesium line ?
Franco
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Re: Solar activity 13th jan 2022 - Mg (b2)
Thanks to everyone in recognising the image as a "SPOD" -amazing, and humbling.....
The Mg triplet and the Na D1/2 doublet are representative of the very low chromosphere, bordering on the top of the photosphere.
Based on the professional reviews, this would then infer the images should be similar to those found in Ca II K1 and the H alpha wings.
As Mark, I think, said " Like Continuum images on steroids!!"
There's a good table of the prominent lines in the Chromosphere (This one's an extract from Alexandra's blog)
The Mg triplet and the Na D1/2 doublet are representative of the very low chromosphere, bordering on the top of the photosphere.
Based on the professional reviews, this would then infer the images should be similar to those found in Ca II K1 and the H alpha wings.
As Mark, I think, said " Like Continuum images on steroids!!"
There's a good table of the prominent lines in the Chromosphere (This one's an extract from Alexandra's blog)
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
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"Imaging Sunlight - using a digital spectroheliograph" - Springer
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http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Re: Solar activity 13th jan 2022 - Mg (b2)
Always very interesting to see your work, Ken.
Stu.
Stu.
H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
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Re: Solar activity 13th jan 2022 - Mg (b2)
Ken, all.
It appears that CaK, CaH and Mg all view the lower chromosphere near or at the photosphere-chromosphere transition region. Sodium D line may be the closest to the photosphere of all. It certainly looks closer to continuum than the rest. Does anyone else make and market a Magnesium ( b2 ) filter outside of DayStar?
James
It appears that CaK, CaH and Mg all view the lower chromosphere near or at the photosphere-chromosphere transition region. Sodium D line may be the closest to the photosphere of all. It certainly looks closer to continuum than the rest. Does anyone else make and market a Magnesium ( b2 ) filter outside of DayStar?
James
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Celestron NexStar 102GT with Altair solar wedge
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Re: Solar activity 13th jan 2022 - Mg (b2)
I'm not aware of any other Mg (b2) filters. Daystar seems to be the only one.
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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 activity 13th jan 2022 - Mg (b2)
Great image Ken
Pedro Re'
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