I found some data from last year of M83 and reprocessed it using my new LRGB Pixinsight workflow, the results are are amazing. The new workflow is bringing out so much more color. For some time I have thought my blue filter was some how defective or that I needed to take twice as many blue subs when doing LRGB, but as the image below can attest that is not the case. Is all in the processing. I used ProDigital Star Spike Pro 4 to enhance my naturally  occurring star spikes caused from the secondary on this scope. 

Here is a link to the pixinsight LRGB workflow 

M83 AKA The Southern Pinwheel, 4 hours LRGB, Vixen VC200L sBig STF 8300M,  astrodon filters 

M83 Annotated

Messier 83 (also known as the Southern Pinwheel Galaxy, M83 or NGC 5236) is a barred spiral galaxy approximately 15 million light-years away in the constellation Hydra. It is one of the closest and brightest barred spiral galaxies in the sky, making it visible with binoculars. Six supernovae (SN 1923A, SN 1945B, SN 1950B, SN 1957D, SN 1968L and SN 1983N) have been observed in M83.