AR12715 in the Ca II K line. C11 280mm telescope.
Posted: Wed Nov 07, 2018 6:20 pm
Hi all,
Here is the image from my large archive of our sun images. A fairly active AR12715 group as it was early morning of June 21 2018.
I imaged it with my C11 280mm SCT equipped with the ARIES 295mm two bands DERF filter and PST CaK etalon. Camera was
Balser 1920-155. Seeing was average with some improvements. This image was taken during one of such improvements.
Hope you like it. And this was less than half of year ago!
Valery
Here is the image from my large archive of our sun images. A fairly active AR12715 group as it was early morning of June 21 2018.
I imaged it with my C11 280mm SCT equipped with the ARIES 295mm two bands DERF filter and PST CaK etalon. Camera was
Balser 1920-155. Seeing was average with some improvements. This image was taken during one of such improvements.
Hope you like it. And this was less than half of year ago!
Valery