The usual dust donuts problem. I'll have to find some cleaning instructions, it's getting a bit annoying.
My first attempt at getting a prominence. Will have to look into this more as the results are not as good as I expected or would like. I'm unsure if it's how I acquired the images, the stacking process or the final processing - or all 3! Any tips appreciated.
In the next one, it's easy to pick the dust donuts. The major sunspot is obvious, but are the other really black areas smaller sunspots or some other artifact?
