Hi Wes, I think the UHC filter might be hurting your image of M17 perhaps. I'm no expert on filters mind you, the only filter I use is a Baader IR/UV cut, to minimise star bloat on my OSC.
As I mentioned in reply to your comment on M17 thread, casstony is getting excellent results with the L-enhace filter, have a look at his M17 just down the page a bit.
Cheers,
Tony
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