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 ==
magnetic fields
magnetic fields
- Attachments
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- AR2723
Precedent sunspot ( N pole ) Red shift - MAG2281_A_K_N_POLE.jpg (93.29 KiB) Viewed 3761 times
- AR2723
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- AR2723 S Pole
Following sunspot ( S pole ) blue shift - MAG2436_B_K_S_POLE.jpg (98.11 KiB) Viewed 3761 times
- AR2723 S Pole
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- 6301A
- 07_59_20_000_6301.5A.jpg (531.8 KiB) Viewed 3761 times
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- 6563A
- 06_45_56_000_RG.jpg (702.77 KiB) Viewed 3761 times
- p_zetner
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Re: magnetic fields
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.
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.
- Montana
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- p_zetner
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Re: magnetic fields
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/
https://www.cloudynights.com/topic/5723 ... tic-field/
Re: magnetic fields
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
I reading your report carefully.
Takashi Sakae's PDF file is as follows;
http://www.asj.or.jp/geppou/archive_ope ... 12_865.pdf
- marktownley
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Re: magnetic fields
Interesting!
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!