First hargb image

[Pid]

Hi all first time I have been able to get out with my ha filter 7nm and decided to shoot the rosette nebula I have collect data via 240s subs in ha and also rgb via my modded canon 450d . The ha data seems rather noisy  but looks ok and both stacked with iut issues ,problem I have is once I edited and copy and past the ha into the rgb red channel it seems to become very noisy  as seen below .  Any advice would be muchly appreciated. 

 

Thanks pid

[Adam1234]

Nice