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I'm looking for feedback on the image below. I know my stars are a weird shape and am trying to work out what is causing them, so ignoring those, what do you make of the rest of the image? Original:  M51 |
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Hi Andy! It's a nice M51. There is good detail in the galaxy, and you've captured a good amount of dust in the "thumb" area. The one thing that jumps out is a touch of a blue cast to the background in a blotchy sort of pattern. There is some IFN in that area, and it can cause this. You could possible mask the background and reduce the blue and/or saturation, and also lower the background level to help combat this. I like my backgrounds of galaxy images a little darker than my nebula images, at around an RGB/K value of 24 or so, as read out using the Pixinsight probe tool. Maybe ever so slightly bump the contrast to get the orange-yellows in the thumb to come out. Cheers! Ty |
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Hello, I think is a good picture. I processed mine a couple of days ago and I worked mainly in deconvolution over luminance, the right HDR compression. You could also highlight the H-Alfa regions using color saturation. Have a look https://astrob.in/tcnryo/0/ |
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| Image looks great on my tablet. Galaxy seems a bit cyan, so may be more punchy to slightly modify the color balance. Excellent overall! |
