Good grief! What a cool image this is: the Sun as photographed by Alan Friedman in hydrogen alpha light. The detail in the surface (photosphere) is simply amazing, especially considering the image was taken with a backyard telescope (albeit a very fancy backyard telescope!) Click the image to go to Alan’s page where you can see close-ups of solar surface features, like filaments and prominences and spicules (oh my.)
Another great image from one very talented astrophotographer!
Image © Alan Friedman. All rights reserved. Used with permission.