Full disc 22 February 2020

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rsfoto
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Full disc 22 February 2020

Post by rsfoto »

Hi,

Sunshine with very very thion high cirrus but very uniform in coverage and so hear we go. I added the magnetogram with a difference of about 30 minutes earlier to my imaging session for comparison. The magnetogram image was rotated by 19.64° in CW so it depicts my orientation.

The plagues at 20° and 25° South have cycle 25 polarity Pos / Neg :bow and the one at 5° has cycle 24 polarity Neg / Pos

Mosaico_20200222_Ha_9Q_RE.jpg
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Mosaico_20200222_Ha_9Q_RE_TS.jpg
Mosaico_20200222_Ha_9Q_RE_TS.jpg (1.06 MiB) Viewed 5012 times
Mosaico_20200222_WL_4Q_RE.jpg
Mosaico_20200222_WL_4Q_RE.jpg (1.08 MiB) Viewed 5012 times
20200222_2048_HMIB_19.64°CW.jpg
20200222_2048_HMIB_19.64°CW.jpg (938.97 KiB) Viewed 5011 times


regards Rainer

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Re: Full disc 22 February 2020

Post by DeepSolar64 »

You captured today's sun very well.


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Re: Full disc 22 February 2020

Post by rsfoto »

Hi,

I made a video overlaying the SDO magnetogramm image over my Ha image. Interesting to see that many black and white polarity spots do coincide with some prominent plagues


https://vimeo.com/393184231


regards Rainer

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Re: Full disc 22 February 2020

Post by DeepSolar64 »

I need to learn how to interpret the magnetogram images.


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Re: Full disc 22 February 2020

Post by rsfoto »

DeepSolar64 wrote: ↑Sat Feb 22, 2020 10:53 pm I need to learn how to interpret the magnetogram images.
Hi James,

White is Positive and Black is negative.

For cycle 25 (coming cycle) the polarity is Positive / Negative in the Southern hemisphere and Negative / Positive in the Northern hemisphere.

For vertical polarity I have no idea.

Cycle 24 is opposite.

Condition for judging this is the correct orientation of the Sun poles. North is up and East on the Left. This you can find out with time when we have more detailed Sun spots.

Rainer


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Re: Full disc 22 February 2020

Post by JochenM »

And I just learned something new there. Thanks for that Rainer.


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Re: Full disc 22 February 2020

Post by marktownley »

Great disks Rainer.


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Re: Full disc 22 February 2020

Post by MAURITS »

Great images and explanation Rainer.


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Re: Full disc 22 February 2020

Post by rsfoto »

DeepSolar64 wrote: ↑Sat Feb 22, 2020 10:53 pm I need to learn how to interpret the magnetogram images.
Hi James,

Here some more information

http://sprg.ssl.berkeley.edu/~tohban/wi ... 5_for_sure

https://spaceweather.com/archive.php?vi ... &year=2019


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Re: Full disc 22 February 2020

Post by DeepSolar64 »

Rainer,

Thank you on the info on interpreting the magnetogram images.

James


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Re: Full disc 22 February 2020

Post by Montana »

Excellent images and I really love the overlay, plage is the root of the magnetic fields so it it is not surprising that it matches, I really love this. A long time ago I overlaid the magnetic field lines and this is also fun to do. Took me ages to find this and it wasn't on Flickr for some reason ;)
Image2012-10-21 AR11596-98 b BC field lines by Alexandra Hart, on Flickr

Alexandra


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