20140601 Wah!'s SHG: H-a, H-b, H-g, H-d, Ca-H, He-D3

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Wah
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20140601 Wah!'s SHG: H-a, H-b, H-g, H-d, Ca-H, He-D3

Post by Wah »

20140601 Wah!'s SHG: H-a, H-b, H-g, H-d, Ca-H, He-D3


Besides the attached images, I have also uploaded some spectrum videos to show these lines in spectrum.
The slit was on the edge of the sun, it is very interesting to see the prominence on the spectrum.
Except CaH and CaK, all other lines/prominence can be seen by eyes!!!

H-alpha
https://www.youtube.com/watch?v=HKa4y5Wcycg

H-beta
https://www.youtube.com/watch?v=IdfRSbJXilc

H-gamma
https://www.youtube.com/watch?v=q1JXJ5exwXU

H-delta is missing.

CaH & CaK
https://www.youtube.com/watch?v=cLXI_Kr_W54

He-D3
https://www.youtube.com/watch?v=N-SRGnLTmmA
Attachments
This is not captured with the SHG, but with my PST. SHG is nearly impossible to achieve the same amount of fine details.
This is not captured with the SHG, but with my PST. SHG is nearly impossible to achieve the same amount of fine details.
The most active line within the visible spectrum. You can never miss it!
The most active line within the visible spectrum. You can never miss it!
Prominence can be easily seen in the spectrum with naked-eyes.
Prominence can be easily seen in the spectrum with naked-eyes.
Fewer prominence and lower contrast than H-beta
Fewer prominence and lower contrast than H-beta
Detail contrast is the lowest among the 4 hydrogen lines. A little bit prominence still can be seen on the left.
Detail contrast is the lowest among the 4 hydrogen lines. A little bit prominence still can be seen on the left.
One of the scans is out of focus, sigh...<br />Deliberately bring out the prominence on the edge.
One of the scans is out of focus, sigh...
Deliberately bring out the prominence on the edge.
Some prominence can be seen on the edge
Some prominence can be seen on the edge
Last edited by Wah on Tue Jun 03, 2014 1:15 am, edited 1 time in total.


alex
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Re: 20140601 Wah!'s SHG: H-a, H-b, H-g, H-d, Ca-H, He-D3

Post by alex »

Thank you for all these wonderful fotos :)


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Re: 20140601 Wah!'s SHG: H-a, H-b, H-g, H-d, Ca-H, He-D3

Post by swisswalter »

Hi Wah

fantastic job and thanks for the detailed comments to each pic


Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

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Re: 20140601 Wah!'s SHG: H-a, H-b, H-g, H-d, Ca-H, He-D3

Post by marktownley »

Your results are stunning Wah! :cool:


Image
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: 20140601 Wah!'s SHG: H-a, H-b, H-g, H-d, Ca-H, He-D3

Post by p_zetner »

Nice images, Wah.

Did you try the continuum subtraction for He D3 ?

Peter.


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Re: 20140601 Wah!'s SHG: H-a, H-b, H-g, H-d, Ca-H, He-D3

Post by Wah »

p_zetner wrote:Nice images, Wah.

Did you try the continuum subtraction for He D3 ?

Peter.
Yes, I did try once before, but failed to get obvious dark areas.
I need to have the grating upgraded before the next trial.


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Re: 20140601 Wah!'s SHG: H-a, H-b, H-g, H-d, Ca-H, He-D3

Post by Wah »

For the video I captured:

CaH & CaK
https://www.youtube.com/watch?v=cLXI_Kr_W54

I have a question that why I can see 2 bright lines at CaH but just one at CaK?
I don't think it is artifact from the equipment, am I correct?


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Re: 20140601 Wah!'s SHG: H-a, H-b, H-g, H-d, Ca-H, He-D3

Post by Derek Klepp »

Well done Wah


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Re: 20140601 Wah!'s SHG: H-a, H-b, H-g, H-d, Ca-H, He-D3

Post by swisswalter »

Wah wrote:For the video I captured:

CaH & CaK
https://www.youtube.com/watch?v=cLXI_Kr_W54

I have a question that why I can see 2 bright lines at CaH but just one at CaK?
I don't think it is artifact from the equipment, am I correct?

Hi Wah

shouldn't we see 2 lines at CaK and one line at Ca II H :oops:


Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)
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Re: 20140601 Wah!'s SHG: H-a, H-b, H-g, H-d, Ca-H, He-D3

Post by Wah »

The top is the red side, shouldn't it be CaH?


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Re: 20140601 Wah!'s SHG: H-a, H-b, H-g, H-d, Ca-H, He-D3

Post by swisswalter »

Hi Wah

you are right, the Ca II H line is on the red side of the CaK


Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)
Wah
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Re: 20140601 Wah!'s SHG: H-a, H-b, H-g, H-d, Ca-H, He-D3

Post by Wah »

My question is still unsolved, why are there 2 bright lines near CaH but not on CaK?


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Re: 20140601 Wah!'s SHG: H-a, H-b, H-g, H-d, Ca-H, He-D3

Post by p_zetner »

Hi Wah.

Just noticed your question on this thread.

The 2nd bright line near CaH is, most likely, H epsilon at 3970 A. This will also give bright emission near the limb.

Cheers.
Peter.


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Re: 20140601 Wah!'s SHG: H-a, H-b, H-g, H-d, Ca-H, He-D3

Post by Wah »

Ah~ I never thought that there is an Hydrogen line so close to the Ca-H ~!
Thanks Peter!


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