Solar cycle 25

Alright, this is for sharing of your observation experience. Or, if you are arranging gatherings, star-gazing expeditions or just want some company to go observing together, you can shout it out here.
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superiorstream
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Re: Solar cycle 25

Post by superiorstream »

Also note that NO PROMINENCE SPOTTED TODAY. ALSO DIDN'T SEE ANY FILAMENTS.
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yltansg
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Re: Solar cycle 25

Post by yltansg »

Dear Mr Chia,
Thank you for a comprehensive report. I also did a 3-wavelength full-disk imaging session. From left - 540nm (photosphere), 393.4nm (lower chromosphere) and 656.28 nm (upper chromosphere):

Image

The telescopes used:
Image

Do a right click on the image to see the disks in their full resolution.

Enjoy.

Alfred
superiorstream
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Re: Solar cycle 25

Post by superiorstream »

Hi Alfred
Thanks for sharing the photos and those 3 photos of the instruments. They certainly cost a fortune!

By the way, that small unnamed sunspot in the southern belt mentioned is designed as sunspot 2919.
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yltansg
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Re: Solar cycle 25

Post by yltansg »

superiorstream wrote: Tue Dec 28, 2021 7:14 am Hi Alfred

By the way, that small unnamed sunspot in the southern belt mentioned is designed as sunspot 2919.
Hi Mr Chia,

Thanks for your comments. Going through the video recording, I found a bird transit recording. Sunspot 2919 was also recorded :)

Image

To see 2919 and how the bird flapped its wings, do a right-click followed by click on the + symbol.

Alfred
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yltansg
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Re: Solar cycle 25

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During the Christmas period, the Sun was covered with as many as 10 sunspots in both hemisphere. Unfortunately the weather was poor and I did not manage to do any imaging. This is how the Sun looks this week.

Image

Credit SDO/HMI

Captured the following H-Alpha high-resolution image of Sunspot AR2924. This pair looks awesome but it has relatively stable magnetic field and pose no immediate threat to Earth.

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Another post-processing workflow to extract as much data from the video:
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Other picturesque terrains:
Image

Image

More sunspots are coming in from the far side later part of this week, one of which has given off a coronal mass ejection recently. It would be interesting to watch. So stay tuned.

Alfred
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yltansg
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Re: Solar cycle 25

Post by yltansg »

AR 2924 has moved nearer to the western limbs and developed beta-gamma magnetic fields which have energy for M-class flares. Caught it flaring :

Image

Also caught AR2927, it is a beauty and so much details:
Image
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