Upgraded the slit to the Jeulin 10 micron x 6mm slit plate.
The definition looks better.
These are from a stack of four images, each 9sec scans. Processed only in EN-INTI.
Enjoy!
MiniSHG - H alpha and CaK
- Merlin66
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MiniSHG - H alpha and CaK
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
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"Astronomical Spectroscopy for Amateurs" and
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http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
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- Montana
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Re: MiniSHG - H alpha and CaK
Wow!! very nice the CaK is razor sharp but I think the Halpha is a bit soft, is that more difficult to focus?
Come to think about it, how do you focus on the disc when all you can see is a narrow slit?
Alexandra
Come to think about it, how do you focus on the disc when all you can see is a narrow slit?
Alexandra
- Merlin66
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Re: MiniSHG - H alpha and CaK
Alexandra,
You "focus" on the solar atmospheric "wiggles" seen on the target absorption line when it's in best focus.
Onwards and Upwards
You "focus" on the solar atmospheric "wiggles" seen on the target absorption line when it's in best focus.
Onwards and Upwards
"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
- Merlin66
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Re: MiniSHG - H alpha and CaK
I've extracted a few frames from a full solar disk, 9 sec scan, which show the "normal" cropped H alpha absorption line used to re-construct the SHG image. ( Cropped to 1150 x 170 for the GIF)
You can see the "wiggles" in the Ha line caused by the surface features and a couple of sunspots tracking across. The clearer the wiggles, the better the focus and solar detail recorded.
The solar image shows the results from this full scan.
You can see the "wiggles" in the Ha line caused by the surface features and a couple of sunspots tracking across. The clearer the wiggles, the better the focus and solar detail recorded.
The solar image shows the results from this full scan.
"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
- Montana
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- Carbon60
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Re: MiniSHG - H alpha and CaK
Great progress, Ken. Looking very promising.
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/
- marktownley
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Re: MiniSHG - H alpha and CaK
Seems to work Ken! Nice results.
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!