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.
AR12089 is quite a busy active region as it nears the limb, with several proms also visible in this shot taken with the 40mm at 925mm focal length with the homebrew CaK filter and DMK31 camera.