Absolutely loads of interesting things going on in this hydrogen alpha image! The mini-erf has been removed on the coronado BF10 but when replaced with a Baader neodymium filter contrast increases significantly but keeps the exposure short. Not entirely sure what is going on here - my theory is that without the mini ERF there is some IR leak, and with the neodymium in place this is blocked. Whatever the reason this looks like will be a permanent feature on my ha solar setup!
