Quote:
Originally Posted by irwjager
It's a combination of Deconvolution (the resolution and stellar SNR of this data is wasted otherwise!), automated scene-based global stretching (manual curves are sooo 90s  ), local histogram optimisation and equalisation, topped off with some inter-scale aware wavelet sharpening of the larger structures. Not more than 5 minutes work.
I'm not a fan of too heavy-handed local dynamic range optimisation (e.g. the infamous 'flat' PixInsight look that destroys large scale detail/depth), so your description of "a low contrast HDR effect" is spot-on! 
Happy to explain each step/algorithm in detail!
Cheers, |
So if I understand correctly Ivo you are doing for deep sky images what the planetary imagers are doing with their low contrast data?
I have a stack of 3nm NII and HA data of 27x16 minutes ie 7.2 hours. The best 80% of 34 frames. I would be very grateful if you could try this data with your methods.
Here is the compressed fit 41MB
http://d1355990.i49.quadrahosting.co...I+HA_80pc_.zip
I collected the HA last night so it is hot off the press.
Bert