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Hi Marcus,
The Ha didn't turn out that well. I am not sure why. Perhaps this camera isn't that sensitive to Ha - too early to tell. I have done a lot of Ha before with an STL and RCOS 12.5 inch and that was equally dim if not dimmer.
How did your Ha turn out for similar exposure time?
The clear filter images had tremendous detail. I notice Russell Croman's Horsehead doesn't use Ha at all. I was planning to not use it but it did add some detail to the dark areas and more richness to the red coloured areas.
Clear filter or no filter at all is the way to go.
I blended it using screen mode and about 50%.
Greenish flares are probably from your green filters which if they are Astrodons tend to reflect most in the green filter I noticed with mine.
Greg.
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