Quote:
Originally Posted by rogerg
I'm not sure what you did with the central star though! vapourise it?  I'd expect it to easily stand out but somehow you've wiped it out  Perhaps focus, but the object is so diffuse anyhow it's hard to say what your focus is like, other than the missing central star.
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I think it's the filter. Not sure what the UHC filter actually does, and I know it's intended for visual use not photographic. Here's a sub, unprocessed - the central star is gone too. So it wasn't something that happened in processing.