Sunday 12 May 2019

CaK Full Disk 12th May

Finally finished tweaking with the homebrew CaK filter to throw reflections far from the suns disk.  The image was taken with the SW ED80 stopped down to 60mm.  I was struggling with the seeing today, and this reflects in the spicule ring which is undefined, I know when seeing is good the spicule ring is well defined at this aperture.