Quote:
Originally Posted by Slawomir
Hi Andy,
To my eye your interpretation of this nebula is excellent  And thank you for your kind feedback 
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Thanks Slawomir, but you really set the bar high with yours, easily the benchmark for this DSO.
Quote:
Originally Posted by strongmanmike
This colour palette seems quite popular now for this neb. I do like the composition and the main bright bits of the paw print look ok I guess (with no paint by numbers look in those areas yay!  ) but...if I am honest, the rest is a bit harsh and messy looking.
Sounds like the data you had to work with Andy wasn't ideal though so I am sure it was good processing practice at least
Mike
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Yes thank you Mike - I think that sums up the experience well. Startools is working pretty well for me now - I was amazed to get this image up to this level with the data I used, but you can't make a silk purse etc...
Quote:
Originally Posted by topheart
Good one Andy!
I think you did well considering the challenges!
Cheers,
Tim
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Thanks Tim - perseverence it its own reward, or I'm just too darn stubborn to give up sometimes
Quote:
Originally Posted by gregbradley
Nice shot Andy. I have data at 2 image scales for this one and I am finding processing challenging. How did you get those nice colours?
The bright areas are great and the tendrilled sphere is nice and sharp. The dim areas though look posterised and the data is too thin to get a solid image there.
Greg.
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Hi Greg, Thankyou for that, yes not enough decent data that's for sure.
As to the colours? For what it's worth, here's my secret recipe, (shhh don't tell anyone!)
In PS, use hue/saturation layers with clipping masks assigned to each filterered image set.
Red - S2, colourize Hue 0, Saturation 100, lightness -11,
Green - Ha, colourize Hue 123, Saturation 100, lightness -50,
Blue - O3, colourize Hue 240, Saturation 100, lightness -13
Then stir in selective colour and a touch of colour balance to taste.
See screenshots below.
I should mention that this varies from subject to subject, as the amount and strength of Ha etc. have a huge impact on the colour formula.
A starting point for that is here -
http://bf-astro.com/hubblep.htm
Cheers
Andy