Your image could actually do with some more contrast in the brighter areas
at the center of the galaxy - but only a touch
which could be adjusted with opacity.
However it's never ending - you just have to know when to stop.
cheers
Allan[/QUOTE]
I think you are right. I did have a bit of attention on the brightness and contrast. Now the background is under control I have revised it yet again (version 31, I kid you not) with higher details and a bit more overall galaxy halo though no signs of the UV knots Robert showed are there. Same links.
Image processing - wow, its a whole world and can take longer than accumulating the data in the first place!
Great rendition of M83 Greg, this one reminds me those classic image I used to look in owe made with meters class telescopes not so many years ago
Lovely..
Regards
Marco
Thanks very much Marco. I've tried to image M83 many times with varying success. I think this is the best effort so far and why I put so much effort into the processing. I did something like 40 versions of this during processing!