[Gimp-user] How to fix vignettting, smooth out digital noise and reduce sky glow in astro-photo

>Hi, all. > >I have a picture of comet 46P/Wirtanen from a few nights ago. > >I'm new to GIMP and it's like a space shuttle control panel to me. > >Can you please provide step-by-step instructions to >1. reduce vignetting in the corners >2. smooth out the background noise >3. keep stars (the

[Gimp-user] How to fix vignettting, smooth out digital noise and reduce sky glow in astro-photo

Hi, all. I have a picture of comet 46P/Wirtanen from a few nights ago. I'm new to GIMP and it's like a space shuttle control panel to me. Can you please provide step-by-step instructions to 1. reduce vignetting in the corners 2. smooth out the background noise 3. keep stars (the brightest ones