Images of the Sun, our local star, at a range of wavelengths with specialist solar telescopes. Imaging tutorials, solar bits and pieces for sale, talks and outreach with the Charlie Bates Solar Astronomy Project CBSAP.
I was looking through the avis I took on friday 13th and discovered this closeup I took of the departing active regions, taken with the 40mm at 925mm focal length with the homebrew CaK filter and DMK31 camera.