November 15 2021 Observations

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DeepSolar64
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November 15 2021 Observations

Post by DeepSolar64 »

Session time is from 16:10 until 17:10 UTC. Considerable high cloudiness. Below average seeing. The temperature is 45F ( 7.2C )


Coronado SolarMax II 90 DS. 32x and 44.5x ( Ha )
I can see five AR disturbances in the Ha chromosphere today. AR12896 is visible as a spot with little plage in the SE not far off the SE limb. Well north of it almost on the limb lies a small easy plage very close to the limb. It's just over the equator in the NE quadrant. AR12895 is visible in the NW quadrant with it's 3 shaped plage. A filament lies NE of it and another SW of it. AR12894 is now nearing the SW limb. I can see it's spot among it's scattered plage. A fine curved filament lies SE of the spot. The plage has a broken extension to the NW.

Filaments are few today. Outside of plage related ones I see only two. A faint thin one in the far NE and another near the NW limb. Prominences fare a bit better. I see a group of 4 on the SE limb. One of these ( second from the top ) shows faint " smoke " trailing a short distance southward. The NW limb shows one that may be a fat loop. A small void is seen lower center. I see a couple on the SW limb. The southernmost one is a bright pyramid-prom.

The mottles are easily visible across the disc today.



Celestron NexStar 102GT w/Altair wedge and 540nm Baader filter. 55x and 83x ( WL )
I can see four regions of activity on the photosphere at 540nm. AR12896 is visible in the far SE with a single small spot that still shows umbra/penumbra components. I see no other spots or pores nearby. A large patch of faculae is visible SE of the spot. AR12894 shows a single spot showing umbra and penumbra. The umbra is double. Faculae surrounds the spot but is brightest to the east and southeast. Using 83x I could just make out a faint ring against the spot. Is this the bright ring that is the subject of the November challenge? If so it's not very bright in this instance. I would never notice it if I wasn't looking for it. Higher magnification would certainly help but the seeing won't allow it. Another patch of faculae is seen NW of AR12894 near the limb. Surprisingly I can pick out the faint faculae of AR12895 in the NW quadrant. I see no spots or pores there.

I can see the fine granulation but it's a bit washed out by the seeing. The seeing is noticeable at the solar limb too.


The music for today's session is:

Cristofori's Dream and Painting the Sun. Both by David Lanz.


Carpe Lumen!

James


GONGHa+SDOHMIc_11-15-21.JPG
GONGHa+SDOHMIc_11-15-21.JPG (174.07 KiB) Viewed 380 times


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Re: November 15 2021 Observations

Post by EGRAY_OBSERVATORY »

Indeed James, the disk is looking rather bland at present, other than the two spots, but at least you had a view, which here is not the case.

Am waiting for an opening to try-out the Sodium Quark and a ZWO cam in the mini-obsy and there may be a chance towards the weekend, but the charts are changing daily, so nothing is certain...

Terry


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Re: November 15 2021 Observations

Post by DeepSolar64 »

Terry,
I am curious about your work with the sodium D line filter. Use it visually too. I wanna know how much it is alike and different than a continuum filter. Sodium seems to highlight the Photosphere-Chromosphere transition region below the layer Ca II K sees but just above what is seen in white light, hence it shows many features shown in WL continuum but can also show flare footprints and supergranulation which are not visible in WL. I think a Helium filter studies the same region of the sun.

http://www.daystarfilters.com/HeD3.shtml

James


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Re: November 15 2021 Observations

Post by marktownley »

Thanks for the report James! My morning weather here today is foggy... But, maybe some clear skies on sunday...


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Re: November 15 2021 Observations

Post by davhei »

AR12894 with the double umbra in white light, is that what you would call a unipolar group with a light bridge crossing the umbra? Possibly heralding the dissolution of the spot?

Trying to understand the morphology after my own observation of the region.


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Re: November 15 2021 Observations

Post by MAURITS »

Thanks for the update James.


Regards,
Maurits

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Re: November 15 2021 Observations

Post by DeepSolar64 »

davhei wrote: Tue Nov 16, 2021 8:04 am AR12894 with the double umbra in white light, is that what you would call a unipolar group with a light bridge crossing the umbra? Possibly heralding the dissolution of the spot?

Trying to understand the morphology after my own observation of the region.

Yes. That’s the way I would see it too.


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Re: November 15 2021 Observations

Post by eroel »

James:
Thanks for the report.
Regards.
Eric.


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Re: November 15 2021 Observations

Post by DeepSolar64 »

Thanks and welcomes, Eric!


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Re: November 15 2021 Observations

Post by EGRAY_OBSERVATORY »

Thanks James and as it happens, today have taken the first slightly decent images from the mini-observatory, including some Sodium too.

So I'll certainly look into visual/EP viewing through the Sodium Quark and compare those with the image-captures - to let you know what I can find out for you...

Had a quick look at the Helium web-link and will look again at that, as there is a possibility that even I might be interested in that to get.

At the moment just one of the Sodium is posted soon here, but some others may be added if suitable.
It was almost impossible to get really sharp images, due to severe turbulence, where even the stacked images were barely useful...

Cheers
Terry


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Re: November 15 2021 Observations

Post by DeepSolar64 »

I would be curious how the sodium and helium views would compare. The images I have seen between them look quite similar. Have you ever thought about Magnesium?


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Re: November 15 2021 Observations

Post by EGRAY_OBSERVATORY »

Oh yes definitely Magnesium has shown to be very interesting and i have seen some very interesting images.

Who knows what the future will definitely hold, but good comparisons between WL. Sodium and Helium will be interesting.

I will do some research on that issue and when the weather has calmed down (way up in our atmosphere) and of course cloud-permitting, will endeavour to take both WL and Sodium of exactly the same region for comparisons and let you have the results.

I'm still at an early-stage of playing with the settings of the Sodium quark, but I know that the central-setting has already produced a decent image, but using the better SW 80ED scope in the main-obsy.

From the mini-obsy, I have about a 3-hour window of opportunity daily and currently and am monitoring how this changes throughout the next 2-3 months...
Then back to the main-obsy - hopefully...

Cheers for now
Terry


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Re: November 15 2021 Observations

Post by DeepSolar64 »

Terry,
Most people here concentrate on " The Big Three ", WL, Ha and CaK and for good reason, they cover the Sun very well. But there is a place for other wavelengths and I feel we can learn from them. Ones like Sodium, Helium, CaH, Magnesium and Hb. Some here work with SHG equipment and that would be a good opportunity to utilize these for less trodden wavelengths of light. Hmm....

James


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Re: November 15 2021 Observations

Post by Montana »

Lovely reports James,

Just a quick note on the Helium Sun, the plage regions are dark in this band, so it looks like an inverse halpha wings. There are lots of images on the spectroscopy part of the forum.
viewforum.php?f=8
viewtopic.php?f=8&t=33845

Alexandra


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Re: November 15 2021 Observations

Post by DeepSolar64 »

Thanks Alexandra. I'll check these out.


Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
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Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
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Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
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Lunt, Coronado, TeleVue, Orion and Meade eyepieces

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