Well, you wont see anything much at the moment, but not because of the filter but because we're currently experiencing the longest solar minimum since the early 1900's. Come back in six months or so with fingers crossed and we might be seeing some action then. So a green filter wont help any more, either. The only thing people are seeing with the h-alpha filters are small prominences, and even they are scare. Patience is the only solution.
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