The 1.5 angstrom bandwidth of the double stack CaK filter comes into play as shown in this image with the prominences and surge jets just about visible. Given that this image was taken in november, only just over a month away from the winter solstice, the result is pretty impressive. I think images taken in 6 months time, when we will have the sun much higher in the sky, will show prominences quite readily. Now, I just need to take this setup several thousand metres up a mountain and the views would be indiscernible from those taken from space...
