Tone Mapped Narowband.

Tandum (Robin) · #1 24-12-2011, 12:32 PM

Just a heads up for anyone playing with narrowband images. I came across what's called a tone mapping technique for narrowband images here and have run a couple of older images though it with real improvements in image content.

Here's a crop of the prawn I did a while back and was never happy with as so much seemed to be missing. Also attached is a repo using tone mapping. A whole lot more just became visible. Try it out.

allan gould · #2 24-12-2011, 01:37 PM

Robin
Thats absolutely fabulous. Ill have to put this into my todo box. Nice shots by the way.

ozstronomer (Geoff) · #3 24-12-2011, 02:19 PM

Hey Robin, wow...what a difference that processing makes. Shame it won't work on RGB, good pickup!!

Geoff

John Hothersall · #4 24-12-2011, 05:38 PM

Came across this but could not pull it off so well done a vast improvement. A bit too strong though perhaps combining the 2 images with opacity. This technique really lifts faint detail.

John.

Tandum (Robin) · #5 24-12-2011, 06:08 PM

It realy seems to help where one or 2 of the channels are short on signal. I tried it on that rosetta and it really only lifted it a little but it did lift it.

Sorry Geoff, not much chop on RGB, I tried it and layered star colour over the top but got no object gain at all, just wierd coloured stars

RickS (Rick) · #6 24-12-2011, 06:21 PM

Thanks for the pointer, Robin. I'll give it a go some time.