Here I upped the focal ratio of the 40mm up to f20 with the idea of making a higher resolution full disk. Alas the clouds were having different ideas, still I managed 2 panes. Note the proms are still easily visible.
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.