Quote:
Originally Posted by Nicola
Hi David, thank you for you criticism. I am a newbie of NB too, but I believe me I didn't do any sharpening at all, this is what it came out from Ha and OIII and that's it. As far as saturation is concerned instead I could have over emphasized it, I'll have a look at it.
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Nicola,
Careful about colour. People have different views on this and I think you'll find its often quite subjective. Sure there is a natural look and its easy with digital to get too enthusiastic with the saturation slider but in your image to my eye saturation is perfect. To someone elses' it is easily not this or that. So to be fair to you my advice would be to look at other examples of imagers you respect the work of. Then adjust to create a natural look. Also others monitors may or may not be callibrated (mine is not for example) so take comments about colour looking through this viewpoint.
I also have learnt over the years processing that I tended at first to oversaturate and now I tend to pull back various sliders to a more conservative push on colour and get my colour contrast in other ways rather than straight saturation slider. As with other aspects of astrophotography, there is no susbtitute for dark skies, good seeing and long exposure - many hours. Almost every top image I have seen has been minimum 4 hours long and often 20 hours. Sometimes even 30 for the remote observatory crowd.
Again I feel your colour is perfect and it is in fact a very colourful object much like our Vela Supernova Remnant.
Sometimes people help you notice a colour cast though and that is valuable input but too saturated, not saturated enough to some degree is your take on the object. Stars are a good way to tell if you are taking it too far or not far enough. There should be a sprinkling of blue, yellow and white stars. That gives a reference point. Clearly blue stars are not bright blue noe yellow ones dark yellow. Our own sun is a reference point for a yellow dwarf.
