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Old 13-11-2020, 06:19 PM
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multiweb (Marc)
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Join Date: Oct 2007
Location: Sydney
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Quote:
Originally Posted by Andy01 View Post
Cheers Andrew - lots of research, planing ya de ya de ya etc... glad you liked it though!



Interesting you should say that!
I'm an Astrobin judge, and there's been a lot of discussion behind the scenes recently about this very thing.
A recent Apod/IOTD was awarded to an image purportedly taken with a with a 5' 'frac that had almost as much detail as the Hubble!

So naturally, I thought I'd try out this new AI black magic and see what I could get.
FYI here is a comparison of this neb. My image taken under suburban LP vs. one taken by Josep Druidis with a 20" CDK under pristine dark skies.

So, let's the Ai discussion commence! 1-2-3 go!
I know there's a debate going on about it. This is just my personal experience and why I don't use it anymore.

I have the whole AI suite and got very excited at first too. I started using it on planetary. I'm pretty sure the first static shots of Jupiter I did in IR had details that were manufactured but I didn't know any better and what I was looking at so naturally I thought "wow! how cool is this". Then I started doing little animations and batched series of static frames with the same settings in Denoise AI and Sharpen AI. That's when I noticed that from one frame to the other surface details started popping out of nowhere so the rotating features were changing from one frame to the other. Upon closer inspection and looking at other planetary shots I quickly realised that the details weren't real. So ok I thought let's use it in a more subtle way. I did high resolution moon shots. Heaps of them available online so you can very easily find a shot at the same FL that you can map 1:1 with yours. I didn't use Sharpen AI because by then I knew it was a no go. So I started using Denoise AI and to my surprise even with all the sliders/settings to zero it still did apply some modifications to the shots. So at the minimum settings depending on the light incidence the details were changed. Some fine crater shapes would change or move, highlights would popup where there was nothing before just by blinking. I then went online and found a video by Damian Peach talking about it and demonstrating what I had experienced. So what I'm saying the AI suite is a no go for any planetary or deepsky. If you want to enhance the feathers of a bird taken with a telephoto lens at a couple of km away, then yeah, alright, knock yourself out. But using it to accentuate fine details that are clearly smaller than the size of your airy disc or if you end up with details a 4m telescope doesn't resolve then you've got to ask yourself. Since when does the AI suite bend the laws of physics?
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