Quote:
Originally Posted by IanP
Wow! Greg, the frame is full of things … Honderesque, huh? 
To processing: on the “original” I can see some noise …
I’d put it through the clone-masked ATrousWaveletTransform and use very mild parameters for “noise-reduction” for the 1st 4 layers (2.5, 1.5, 0.7, 0.3) ..  |
Thanks Ian. I didn't notice the noise but I do now. I have done some noise reduction without damaging the fine detail.
Quote:
Originally Posted by Placidus
Very fine, Greg. Lovely.
A slight increase in contrast in the blue seemed to improve it even further.
My very amateur and shaky understanding (Wheeler, Cosmic Catastrophes, Kaler, Extreme Stars, etc) is that a SNR is still self-emitting, from a variety of mechanisms, including (in some sort of overlapping time sequence) radioactive decay (months to years), braking radiation (eg Crab nebula), mechanical shock energy (immediate to thousands of years), and finally recombination of ionized hydrogen and oxygen. Only very late in the piece would the gas be glowing purely and only from energy from other OB stars. But the details elude me. I'll go away and read up on it.
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Thanks for the tip. I boosted the blue channel in curves a bit.
Greg.