Ca II K3 Prominences - 3rd Jan 2022
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Ca II K3 Prominences - 3rd Jan 2022
An exciting collection of proms visible this morning - MiniSHG Ca II K.
Enjoy!!
Enjoy!!
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Re: Ca II K3 Prominences - 3rd Jan 2022
Really nice image Ken - and amazing capture of CaK prominence activity!
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Re: Ca II K3 Prominences - 3rd Jan 2022
WoW! These are among the best images of prominences I have seen in CaK!!
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Re: Ca II K3 Prominences - 3rd Jan 2022
Thanks guys, appreciate.
These were taken in Ca II K3 (central wavelength) resolution about 0.18A.
Processed with Matt's version of INTI
No additional processing or enhancement - as is, straight out of the ASI 178 ( a bit of colour added in IrfanView).
FireCapture V2.7
Gain, 169
Exp 1.7ms
fps 140
21sec 16 bit 2925 frames SER file, 3.6 Gb
These were taken in Ca II K3 (central wavelength) resolution about 0.18A.
Processed with Matt's version of INTI
No additional processing or enhancement - as is, straight out of the ASI 178 ( a bit of colour added in IrfanView).
FireCapture V2.7
Gain, 169
Exp 1.7ms
fps 140
21sec 16 bit 2925 frames SER file, 3.6 Gb
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Re: Ca II K3 Prominences - 3rd Jan 2022
These are excellent Ken!
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Re: Ca II K3 Prominences - 3rd Jan 2022
Thanks for the positive response!
It's pleasing to see that the results of the MiniSHG are being so well received.
Next challenge will be the Mg (b2) band.....
It's pleasing to see that the results of the MiniSHG are being so well received.
Next challenge will be the Mg (b2) band.....
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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: Ca II K3 Prominences - 3rd Jan 2022
Superb, Ken.
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Re: Ca II K3 Prominences - 3rd Jan 2022
Ken:
Superb CaK images.
Best regards and a Happy and safe new year.
Eric.
Superb CaK images.
Best regards and a Happy and safe new year.
Eric.
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Re: Ca II K3 Prominences - 3rd Jan 2022
As said already before me here ken.
Absolutely amazing
Thanks vm
Terry
Absolutely amazing
Thanks vm
Terry
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Re: Ca II K3 Prominences - 3rd Jan 2022
For comparison with Ken's fab images, SDO from the same date, shows some of the difference with SDO's AIA-304 capture.
Terry
Terry
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Re: Ca II K3 Prominences - 3rd Jan 2022
Once again thanks very much for the positive response!
Appreciated.
Appreciated.
"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: Ca II K3 Prominences - 3rd Jan 2022
Superb CaK images there Ken
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Takahashi EM400 Mount carrying:
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2.2m Diameter Dome
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Re: Ca II K3 Prominences - 3rd Jan 2022
Fabulous prom images, Ken.
Stu.
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Re: Ca II K3 Prominences - 3rd Jan 2022
These are beautiful prominence shots, Ken.
I’m quite surprised that you can achieve a spectral resolution of 0.08A. Do you have some spectra you could post (good image resolution) to support this determination?
Cheers.
Peter
I’m quite surprised that you can achieve a spectral resolution of 0.08A. Do you have some spectra you could post (good image resolution) to support this determination?
Cheers.
Peter
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Re: Ca II K3 Prominences - 3rd Jan 2022
Brilliant, I quite often see prom's in CaK. Lovely captures.
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80ed WL+ Lunt Hershal Wedge + Badder K-Line filter.
100mm AR + Lunt b1800 Ca-K module.
Neq6 Eq Mount.
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Re: Ca II K3 Prominences - 3rd Jan 2022
Peter,
To be honest the current measured performance of the MiniSHG in Ha is around R=35475 (0.18A), this equates to x3 the dispersion of 0.063A/pixel.
Finding tight reference lines to verify best possible resolution is problematic - I should try using the Neon lamp.....(I've corrected the original post)
To be honest the current measured performance of the MiniSHG in Ha is around R=35475 (0.18A), this equates to x3 the dispersion of 0.063A/pixel.
Finding tight reference lines to verify best possible resolution is problematic - I should try using the Neon lamp.....(I've corrected the original post)
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http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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http://astronomicalspectroscopy.com
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"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Re: Ca II K3 Prominences - 3rd Jan 2022
I'd be interested to see any CaK images taken around the same time on the 3rd Jan for comparison......
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"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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Re: Ca II K3 Prominences - 3rd Jan 2022
viewtopic.php?f=4&t=34393
Missed this one by Steve!
In the full res CaK image he shows the same proms......
Missed this one by Steve!
In the full res CaK image he shows the same proms......
"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