Early morning of May 15 was a clear with a slow breeze. The seeing was variable from so so to good.
I deceided to image the sun in CaK first.
Equipment used: C11 280mm F/10 SCT on the EQ8 mount, ARIES full size 295mm two bands DERF,
PST CaK filter, Basler 1920-155 camera.
The Sun was blank and only a tiny remnants of the AR12709 group were seen. It looks best in the CaK line.
In the H-a it was hidden by the chromosphere and in a white light it looks like a tiny pore barely detectable
on the desert background.
Such a large scale 0,13"/pix is necessary for correct sampling at such a wave length.
Thanks for looking and comments.