This is a combo of M83 data from a CDK17 (1 hour of luminance Microline16 camera) and about 18 hours of luminance from ASI183mm and AP Honders F3.8.
So its mostly the RHA here.
I am happy that this little 183mm works on the Honders as the small pixels could have meant it doesn't work well with it. I'll have to experiment more with 2x2 binning as I don't think I would lose hardly any resolution but would gain a bit in signal to noise ratio.
M83 HaLRGB. 60 1180 150 250 240 minutes a total of 31 hours and 10mins
The data actually showed the extended halo and the arm that branches off the main spiral but at a cost of spoiling the rest of the image so I didn't try to get that in the final image.
https://pbase.com/gregbradley/image/170866340/large regular size
https://pbase.com/gregbradley/image/170866340/original large size
Greg.