A small active area in CaK on the 9th April

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robert
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A small active area in CaK on the 9th April

Post by robert »

An unexpected clear spell with quite good seeing (1.5-2.0 SSM reading) so I had a look at the disc in CaK, ED80 with focal reducer. The tiny active area looked interesting so I added a x3 Barlow and did a sequence of images at 15 second cadence, 30 frames, 7.5 minutes. I wondered what was going on in white light as well so took the same sequence at the same magnification with ED80 and Lunt Herschel wedge and continuum filter. There is a small pore visible in the area.

I like the strange pulsing of the animated CaK image. Sorry, they are big files but will download if you wait.

Robert

Image0409 09_Apr_18_105332_lapl6_ap553 by robertarnold, on Flickr

Image

Image
Last edited by robert on Mon Apr 09, 2018 7:44 pm, edited 1 time in total.


images and animations http://tinyurl.com/h5bgoso
2024 images https://www.flickr.com/photos/69734017@ ... 0313830045
2023 images https://www.flickr.com/photos/69734017@ ... 0304905278
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Re: A small active area in CaK on the 9th April

Post by ffellah »

Excellent images and animations, Robert. The granulation is awesome !

Franco


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Re: A small active area in CaK on the 9th April

Post by marktownley »

These are excellent Robert! You've certainly been getting some clear skies lately - certainly more than me. I did have the Lunt50 set up earlier this morning and caught a few visuals of the emerging flux region where the clouds thinned momentarily. Lots of subtle movement going on in that calcium animation.


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Re: A small active area in CaK on the 9th April

Post by robert »

Thanks Franco and Mark, lucky with the weather!


images and animations http://tinyurl.com/h5bgoso
2024 images https://www.flickr.com/photos/69734017@ ... 0313830045
2023 images https://www.flickr.com/photos/69734017@ ... 0304905278
ED80. ED100. Celestron-150mm-PST mod. C8 edge. ES127
LS60PT-LS60F-B1200. B600-Cak. PGR-Ch3-IMX265
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Re: A small active area in CaK on the 9th April

Post by Valery »

Very nice animations! Thanks for sharing them with us.

BTW The pulsations, I am sure, are the mexture of the seeing and real changes on the sun.


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Re: A small active area in CaK on the 9th April

Post by Derek Klepp »

Well done Robert been having a quick visual in Ha here.


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Re: A small active area in CaK on the 9th April

Post by yltansg »

That was svery nice granulation animation.

Alfred


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Re: A small active area in CaK on the 9th April

Post by Montana »

Wow! I love the calcium K animation, you can see the spicule bases waving around, that is beautiful! :bow :hamster: to get one image that clear in CaK would be a miracle for me ;)
Alexandra


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Re: A small active area in CaK on the 9th April

Post by eroel »

Robert:
Beautiful shots, specially the last two.
Regards,
Eric.


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Re: A small active area in CaK on the 9th April

Post by pedro »

Great shots Robert, love the animations


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Re: A small active area in CaK on the 9th April

Post by MapleRidge »

Excellent captures and animations Robert :bow

Brian


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Re: A small active area in CaK on the 9th April

Post by Carbon60 »

Very nicely done, Robert.

I'd settle for just even seeing the Sun. More grey skies here.

Stu.


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Re: A small active area in CaK on the 9th April

Post by Ronnie_Clayton »

Incredible images Robert, the granulation is amazing!


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