Looks good Ryan, the 10 minute exposures helped to capture more extensive nebulosity. I've only gone up to 7 minutes myself - have to give 10 a go. I suppose it's easier to do longer exposures with the filter since the bright stars won't blow out.
Common wisdom is that ISO 800 is best for the canon's.
I'm not familiar with narrowband images but I guess the lighter area is dominated by OIII.
My L-enhance filter arrived yesterday and we had a few hours of clear sky in the evening but I didn't get home until 11pm - too late to start setting up.
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