The Andromeda Galaxy. The image consists of Ha-25 @ 300 secs. RGB L all at 120 secs, R-65, G-60, Blue-65, L-20. This was my first attempt at an RGB-Ha composite, giving a total integration time of ~8.4hrs. SW ED80 - ZWO 1600mm mono - ZWO filters. Don't be too harsh, I've only been at this for a few months, having said that I do welcome any advice.