The sun was looking very busy when in Calcium K wavelengths on saturday as this full disk image shows. Taken with the 40mm @ f10 with homebrew caK filter and DMK31 camera.
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.