Sun close up in the CaK with C11 280mm scope

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Valery
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Sun close up in the CaK with C11 280mm scope

Post by Valery » Thu Feb 22, 2018 2:02 pm

Hi all,

He is the image from my 2017y. archive.

August 21, 2017. The Sun was very active and I took some photos in Ca-K.

C-11 280mm F/10 SCT was used with ARIES full size front mounted DERF and
CaK PST etalon.

Seeing was average with some improvements.

Thanks for looking.


Valery
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__Aug 21 2017 UT 08h 11m C11 ARIES DERF.png
__Aug 21 2017 UT 08h 11m C11 ARIES DERF.png (725.04 KiB) Viewed 506 times
"Solar H alpha activity is the most dynamic and compelling thing you can see in a telescope, so spend accordingly." (c) Bob Yoesle.

Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.

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ffellah
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Re: Sun close up in the CaK with C11 280mm scope

Post by ffellah » Thu Feb 22, 2018 4:47 pm

A very impressive image, Valery. August 21 was the day of the eclipse in the US, right ?

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Re: Sun close up in the CaK with C11 280mm scope

Post by rsfoto » Thu Feb 22, 2018 8:40 pm

Interesting CaK image.
regards Rainer

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Re: Sun close up in the CaK with C11 280mm scope

Post by JohnW » Fri Feb 23, 2018 5:55 am

Really nice detail there Valery. Well done. Thanks, John W.

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Re: Sun close up in the CaK with C11 280mm scope

Post by Montana » Fri Feb 23, 2018 9:50 am

Wow!!!!! that is a winner :bow :bow :bow

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Re: Sun close up in the CaK with C11 280mm scope

Post by marktownley » Sun Feb 25, 2018 9:07 pm

That's a great view Valery!
Image
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Valery
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Re: Sun close up in the CaK with C11 280mm scope

Post by Valery » Tue Feb 27, 2018 9:08 pm

Thanks to all for your kind words.

Valery
"Solar H alpha activity is the most dynamic and compelling thing you can see in a telescope, so spend accordingly." (c) Bob Yoesle.

Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.

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