Quote:
Originally Posted by Atmos
It is looking pretty good at the moment, going to have a look at the high res version when I get home.
One suggestion for capturing the galaxy, you may be better off taking some deeper (longer) subs for the galaxy and cropping out the stars.
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Cheers Colin :-) That could definitely work, but I'm not sure if that's crossed the line where it's become more effort than I'm prepared to put in lol.
Quote:
Originally Posted by Slawomir
As Colin has already suggested, I would recommend trying applying some stretch with a star mask, or maybe cropping out stars, and adding them after the Galaxy has been properly stretched?
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Cheers S :-) I did play around with that idea briefly with this but found that it's a real PITA trying to get a mask that doesn't leave rings around at least some of the stars. Even when I focused on only doing large stars there'd still be some with rings while others were perfect.
Masked stretch did a better job of it than I could when trying this way, but that did leave stars looking like they have a bright core with a weird larger more diffuse halo.
Quote:
Originally Posted by RickS
You did quite a nice job, Lee! It is a difficult target.
Might be worth trying MaskedStretch instead of HistogramTransform to control the stars a bit better. I don't use it a lot but some people like it.
You can also reduce the stars post stretch with a star mask and MorphologicalTransformation. Sometimes a star mask and a brightness reduction with CurvesTransform and/or HistogramTransform does a nice job too, especially for the largest stars.
Cheers,
Rick.
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Thanks Rick! :-) As above, I did try MS, with somewhat ok results. In the end I gave up on trying to keep the stars under control and did something I've never done before: I used STF to stretch the LRGB, put it all together and then tweaked it from there. Even though the stars are bigger I actually ended up with a better result when I didn't worry about blowing things out.
The thing with MT is that it mostly seems to make the stars dimmer rather than smaller, which can give the image a strange appearance if you're not careful with it.
Having said
that, maybe a careful tweak with MT or curves/hist now that I pushed everything more will tidy it up a bit.
Thanks mate!