magnetic fields

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Merrill55
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magnetic fields

Post by Merrill55 » Sat Dec 22, 2018 3:22 am

2018_10_01
AR2723 by Kenko PRO1 Digital C-PL(W) (1/4 lambda plate + PL plate)
My first magnetic Fields photo by Digital_Spectro_Heliograph.

Merrill55

== Referencies by Takashi Sakae ==
Attachments
MAG2281_A_K_N_POLE.jpg
AR2723
Precedent sunspot ( N pole ) Red shift
MAG2281_A_K_N_POLE.jpg (93.29 KiB) Viewed 418 times
MAG2436_B_K_S_POLE.jpg
AR2723 S Pole
Following sunspot ( S pole ) blue shift
MAG2436_B_K_S_POLE.jpg (98.11 KiB) Viewed 418 times
07_59_20_000_6301.5A.jpg
6301A
07_59_20_000_6301.5A.jpg (531.8 KiB) Viewed 418 times
06_45_56_000_RG.jpg
6563A
06_45_56_000_RG.jpg (702.77 KiB) Viewed 418 times

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p_zetner
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Re: magnetic fields

Post by p_zetner » Sat Dec 22, 2018 3:41 am

Your quarter wave plate / polarizer combination seems to be working although the Zeeman shift appears to be small. You need to generate a spectroheliogram (6302.5A) for an initial quarter wave plate / polarizer combination and one for 90 degree rotation of the polarizer. Subtract the two and you have a magnetogram!

Can you fit these spectra with lineshapes? The wavelength split between sigma(+) and sigma(-) lines will allow you to determine the field strength.
Last edited by p_zetner on Sat Dec 22, 2018 7:42 pm, edited 1 time in total.

Merrill55
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Re: magnetic fields

Post by Merrill55 » Sat Dec 22, 2018 4:19 am

Thank uyou p_zetner,

When solar is active ,I will try to do it.

Merrill55

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Montana
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Re: magnetic fields

Post by Montana » Sat Dec 22, 2018 12:10 pm

These are great images! well done :bow :hamster:

Alexandra

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p_zetner
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Re: magnetic fields

Post by p_zetner » Sat Dec 22, 2018 4:22 pm

Here is an analysis of the Zeeman splitting in the Fe lines which I did some time ago. The spectra were taken without polarization optics. The analysis in your case would be simpler.

https://www.cloudynights.com/topic/5723 ... tic-field/

Merrill55
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Re: magnetic fields

Post by Merrill55 » Sat Dec 22, 2018 10:48 pm

Thank you p_zetner,
I reading your report carefully.

Takashi Sakae's PDF file is as follows;

http://www.asj.or.jp/geppou/archive_ope ... 12_865.pdf

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Re: magnetic fields

Post by marktownley » Sun Dec 23, 2018 1:57 am

Interesting!
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!

Merrill55
Oh, I get it now!
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Re: magnetic fields

Post by Merrill55 » Sun Dec 23, 2018 5:04 am

Takashi Sakae got 10830A photo already.
But I did not see his photo.

Merrill55

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