Settings: 1304 x 976, RGB24
Gain 320, Exposure 30.7 Seconds Unguided
89 Frames, Stacked best 50 in AS, Finished in Photo Shop
Meade LX200GPS 10" with 0.5 Focal Reducer
Would use more gain or exposure next time, tough time stacking with so few stars.
I think it is because the process, I think you should using some deepsky processing software. like MDL and Pixinsight.