May 13 2018 AR12709 in Ca-K with 280mm aperture

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Valery
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May 13 2018 AR12709 in Ca-K with 280mm aperture

Post by Valery » Tue May 15, 2018 3:07 am

Hi all,

Here is the photo of the AR12709 as were seen early morning May 13 2018 in the Ca-K line.

Seeing was mostly poor with some brief improvements. I took three movies of this tiny sunspot group
and this image is the best of these three.

Telescope used: C11 280mm F/10 SCT equipped with the ARIES full size (295mm) two bands DERF, the filter is Ca-K PST filter. Basler 1920-155 camera.

A very short exposure (2ms) and a very high speed (220fps) help to registrate very delicate details visisble slightly
off band of the Ca-K 393,4nm line.

300 frames out of 4500 were selected and stacked. Processed in AS!2 and AstraImage 3.0 and then in a PS CS6.

Thanks for looking.


Valery
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AR12709-May13-2018_C11-ARIES-DERF-PST-CaK.jpg
AR12709-May13-2018_C11-ARIES-DERF-PST-CaK.jpg (485.17 KiB) Viewed 161 times
Last edited by Valery on Tue May 15, 2018 8:01 am, edited 1 time in total.
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Re: May 13 2018 AR12709 in Ca-K with 280mm aperture

Post by marktownley » Tue May 15, 2018 5:11 am

That's an excellent closeup Valery!
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Re: May 13 2018 AR12709 in Ca-K with 280mm aperture

Post by Valtori » Tue May 15, 2018 6:12 am

Hi Valery,

Lovely CaK shot with very delicate details!!

Val

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Re: May 13 2018 AR12709 in Ca-K with 280mm aperture

Post by mattwastell » Tue May 15, 2018 8:36 am

Hi Valery
I do not recall seeing too many hires CaK images - lots to see - any idea of the scale - how many kilometers the image is?
Matt Wastell



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Re: May 13 2018 AR12709 in Ca-K with 280mm aperture

Post by Montana » Tue May 15, 2018 11:42 am

Oooh images like that make me drool...... yum!

:bow :bow :bow

Alexandra

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Re: May 13 2018 AR12709 in Ca-K with 280mm aperture

Post by Carbon60 » Tue May 15, 2018 7:20 pm

Fabulous CaK image, Valery.

Stu.
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Re: May 13 2018 AR12709 in Ca-K with 280mm aperture

Post by eroel » Tue May 15, 2018 11:46 pm

Valery:
Super CaK shot.
Best wishes,
Eric.

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Re: May 13 2018 AR12709 in Ca-K with 280mm aperture

Post by Ibbo » Wed May 16, 2018 12:53 am

Great close up shot

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Re: May 13 2018 AR12709 in Ca-K with 280mm aperture

Post by allhoest » Fri May 18, 2018 6:27 pm

Very fine high res shot.
I wish I could have poor seeing,as yours.
CS
Alex

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