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FORUMS Photo Sharing & Visual Enjoyment Astronomy & Celestial 
Thread started 21 Feb 2019 (Thursday) 12:29
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The Official Imaging the Sun Thread

 
MalVeauX
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Oct 10, 2021 12:32 |  #511

Oct 10th, 2021:

AR2882 has a big spot in it and it threw a CME at us the other day. It hit us and knocked out radio in the Indian ocean for a bit and killed signal under 25Mhz. And it was a small one.

Hydrogen alpha, Calcium K and Continuum wavelengths:

IMAGE: https://live.staticflickr.com/65535/51573804069_aed303619f_c.jpg
IMAGE LINK: https://flic.kr/p/2mzp​e9r  (external link) SolarDisc_HA_60mmF7_IM​X253_Colored_10102021 (external link) by Martin Wise (external link), on Flickr

IMAGE: https://live.staticflickr.com/65535/51573124376_c019a27dde_c.jpg
IMAGE LINK: https://flic.kr/p/2mzk​K6A  (external link) SolarDisc_CaK_100mmF10​_IMX253_Colored_101020​21 (external link) by Martin Wise (external link), on Flickr

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IMAGE LINK: https://flic.kr/p/2mzp​efJ  (external link) SolarDisc_Continuum_10​0mmF10_IMX253_Colored_​10102021 (external link) by Martin Wise (external link), on Flickr

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IMAGE LINK: https://flic.kr/p/2mzk​Kch  (external link) AR2882_HA_120mmF10_IMX​290_Colored_10102021 (external link) by Martin Wise (external link), on Flickr

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IMAGE LINK: https://flic.kr/p/2mzg​zQA  (external link) AR2882_CaK_100mmF10_IM​X290_Colored_10102021 (external link) by Martin Wise (external link), on Flickr

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IMAGE LINK: https://flic.kr/p/2mzq​u4v  (external link) AR2882_Continuum_120mm​F10_IMX290_Colored_101​02021 (external link) by Martin Wise (external link), on Flickr

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Pagman
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Oct 10, 2021 16:32 |  #512

MalVeauX wrote in post #19293198 (external link)
Oct 10th, 2021:

AR2882 has a big spot in it and it threw a CME at us the other day. It hit us and knocked out radio in the Indian ocean for a bit and killed signal under 25Mhz. And it was a small one.

Hydrogen alpha, Calcium K and Continuum wavelengths:

QUOTED IMAGE
IMAGE LINK: https://flic.kr/p/2mzp​e9r  (external link) SolarDisc_HA_60mmF7_IM​X253_Colored_10102021 (external link) by Martin Wise (external link), on Flickr

QUOTED IMAGE
IMAGE LINK: https://flic.kr/p/2mzk​K6A  (external link) SolarDisc_CaK_100mmF10​_IMX253_Colored_101020​21 (external link) by Martin Wise (external link), on Flickr

QUOTED IMAGE
IMAGE LINK: https://flic.kr/p/2mzp​efJ  (external link) SolarDisc_Continuum_10​0mmF10_IMX253_Colored_​10102021 (external link) by Martin Wise (external link), on Flickr

QUOTED IMAGE
IMAGE LINK: https://flic.kr/p/2mzk​Kch  (external link) AR2882_HA_120mmF10_IMX​290_Colored_10102021 (external link) by Martin Wise (external link), on Flickr

https://flic.kr/p/2mzg​zQA (external link)AR2882_CaK_100mmF10_IM​X290_Colored_10102021 (external link) by Martin Wise (external link), on Flickr

https://flic.kr/p/2mzq​u4v (external link)AR2882_Continuum_120mm​F10_IMX290_Colored_101​02021 (external link) by Martin Wise (external link), on Flickr

Very best,

Amazing photos, is it leikely to kick out another cme from the same spot?

P.


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MalVeauX
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Oct 10, 2021 18:17 |  #513

Pagman wrote in post #19293257 (external link)
Amazing photos, is it leikely to kick out another cme from the same spot?

P.

Always potential; spaceweather.com tracks this stuff.

We will get lots more as we get deeper into cycle 25 and the peak around 2024, and more after that as it winds back down to the minimum of the cycle and repeats as cycle 26, etc.

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Jeff ­ USN ­ Photog ­ 72-76
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Oct 10, 2021 19:19 |  #514

double prom on Oct 7 2021.
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Jeff ­ USN ­ Photog ­ 72-76
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Oct 10, 2021 19:55 |  #515

AR 2882 10 7 2021
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"sometimes having is not so pleasing as wanting, it is not logical but it is true" Commander Spock
"Free advice is seldom cheap" Ferengi Rule of Acquisition #59
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Pagman
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Oct 10, 2021 20:00 |  #516

MalVeauX wrote in post #19293289 (external link)
Always potential; spaceweather.com tracks this stuff.

We will get lots more as we get deeper into cycle 25 and the peak around 2024, and more after that as it winds back down to the minimum of the cycle and repeats as cycle 26, etc.

Very best,


Thank you kindly my friend.

P.


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Pagman
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Oct 10, 2021 20:02 |  #517

How come it is Black inside the holes - you would think it would be almost a White Hot colour.

P.


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Capn ­ Jack
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Oct 10, 2021 20:04 |  #518

Pagman wrote in post #19293309 (external link)
How come it is Black inside the holes - you would think it would be almost a White Hot colour.

P.

it's actually colder inside the spots.
https://www.swpc.noaa.​gov …2D%20seen%20as%​20sunspots (external link).




  
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MalVeauX
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Oct 10, 2021 20:05 |  #519

Pagman wrote in post #19293309 (external link)
How come it is Black inside the holes - you would think it would be almost a White Hot colour.

P.

They are black because they are actually cooler temperature than the surrounding convection cells of the photosphere; and because they are not as bright in their core as the surrounding structure, so in a single exposure the inner umbra of the spot is under-exposed, but there's not much you can see in there anyways.

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Oct 10, 2021 20:08 |  #520

MalVeauX wrote in post #19293313 (external link)
They are black because they are actually cooler temperature than the surrounding convection cells of the photosphere; and because they are not as bright in their core as the surrounding structure, so in a single exposure the inner umbra of the spot is under-exposed, but there's not much you can see in there anyways.

Very best,


Thank you kindly for explaining that - its something I never researched - hence my question.

P.


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Oct 11, 2021 01:08 |  #521

Jeff USN Photog 72-76 wrote in post #19293306 (external link)
AR 2882 10 7 2021
Skywatcher 120ED, Quark Chromosphere, ZWO ASI174mm, 1000 frames 100 stacked


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Hosted photo: posted by Jeff USN Photog 72-76 in
./showthread.php?p=192​93306&i=i55863979
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Hosted photo: posted by Jeff USN Photog 72-76 in
./showthread.php?p=192​93306&i=i71989455
forum: Astronomy & Celestial

Is this an actual "hole" in the sun?

I am guessing the hole is larger in size than the size of the Earth from the comparison shots of the Earth you and Martin post here.


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Jeff ­ USN ­ Photog ­ 72-76
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Oct 11, 2021 08:13 |  #522

Inspeqtor wrote in post #19293359 (external link)
Is this an actual "hole" in the sun?

I am guessing the hole is larger in size than the size of the Earth from the comparison shots of the Earth you and Martin post here.

from "Space.com"

Sunspots are darker, cooler areas on the surface of the sun in a region called the photosphere.

The photosphere has a temperature of 5,800 degrees Kelvin. Sunspots have temperatures of about 3,800 degrees K. They look dark only in comparison with the brighter and hotter regions of the photosphere around them.

Sunspots can be very large, up to 50,000 kilometers in diameter. They are caused by interactions with the Sun's magnetic field which are not fully understood. But a sunspot is somewhat like the cap on a soda bottle: shake it up, and you can generate a big eruption. Sunspots occur over regions of intense magnetic activity, and when that energy is released, solar flares and big storms called coronal mass ejections erupt from sunspots.


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Jeff ­ USN ­ Photog ­ 72-76
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Oct 13, 2021 14:57 |  #523

Really nice prom today, AR2884 is in center of shot
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"sometimes having is not so pleasing as wanting, it is not logical but it is true" Commander Spock
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I might not always be right, but I am never wrong! Once I thought I was wrong but I was mistaken!

  
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Jeff ­ USN ­ Photog ­ 72-76
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Oct 14, 2021 13:50 |  #524

AR2882 and AR2885 active regions on the sun 10/14/2021
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MalVeauX
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Oct 15, 2021 17:01 |  #525

Oct 15th, 2021

Saying goodbye to the big spot in AR2882 and some other regions of interest.

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The Official Imaging the Sun Thread
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