M101 with color added

Hi All,
A couple of good nights over the long weekend. Most of the time trying to figure out guiding of my LX90 with SXV guider. Not very successful. (I'll post questions once I go over my notes.) But here is RGB added to a lum from last week. MX716 camera and ZenithStar 66 SD at prime focus. 51/20/20/20 minutes each, one minute subs except red (two minutes while trying guiding). AstroArt3 plus final curves in GIMP. A bit dark due to covering up gradients.
Thanks for looking...and suggestions.
Larry

Attached Image:

Larry,

I like the detail, but perhaps my monitor is screwed up; the left half of the galaxy is showing up red, the other half looks normal.

Also, I see you are using GIMP; I too used GIMP for some post-processing until someone pointed out that it only has 8-bit color depth, meaning that I was loosing alot of my histogram resolution (range?).

I found Stellar Magic Pro to be a good 16-bit alternative priced attractively (~$30-$50 US) for those of us on a tighter budget.

Keep 'em coming!

Keith