I should be so Lucky

[33South (Chris)]

Astro Imaging news item from the Beeb

http://news.bbc.co.uk/1/hi/sci/tech/4456988.stm

[janoskiss (Steve H)]

This is essentially what "our" imaging guys do when they use stacking software like registax, while picking the best frames to stack.

I believe there is a lot more one could do with a sequence of images through the turbulent atmosphere, in order to reconstruct the unperturbed image. I find this problem quite fascinating and hope to look into it more deeply over the coming months, years...

[avandonk]

My Optics lecturer started something called speckle interferometry back in the seventies.We did not have the huge digital computing power in those days so we used real time Fourier computing with the incoming photons.
Did you guys see this for finding extrasolar planets 'visually'.
http://www.sciencedaily.com/releases...1130232242.htm

Bert

[janoskiss (Steve H)]

Originally Posted by avandonk

We did not have the huge digital computing power in those days so we used real time Fourier computing with the incoming photons.

Fourier computer = lens. Analog computing at its finest.

[avandonk]

Originally Posted by janoskiss

Fourier computer = lens. Analog computing at its finest.

No it is far more complex that that.At the back focal plane of a good lens with coherent light,the Fourier transform exists.Filters can be put there to modulate
and deconvolute to obtain the desired information.Then another equally good lens to reconstruct the result.Yes a very quick analogue computer.I remember when an FFT took hours,now my laptop does it in milliseconds.Now people are too busy to see the beauty.

Bert

[janoskiss (Steve H)]

Bert, Fourier optics, and the associated analog image processing/computing, is a beautiful thing and it is performed at the speed of light, literally. And I do appreciate it very much; I believe it is one example of somewhat outside-the-square thinking that could help make unprecedented advances in the science of computing. (can you imagine? the optical co-processor )

[avandonk]

I first put foward the idea to my boss P M C. that the human and any brain works at not only a Fourier level for storing information,but the brain was working at a quantum level for data processing.This was twenty years ago!
He said to me ,get the proof and test!I am still working on it.
I have done many experiments in Fourier processing and I am always astonished how well it works.Fourier did not even have a calculator,let alone a computer.What an achievment!And to think he was trying to understand heat flowing through a metal plate.He virtually predicted phonons that were quantised etc.I could go on.Sorry

Originally Posted by janoskiss

Bert, Fourier optics, and the associated analog image processing/computing, is a beautiful thing and it is performed at the speed of light, literally. And I do appreciate it very much; I believe it is one example of somewhat outside-the-square thinking that could help make unprecedented advances in the science of computing. (can you imagine? the optical co-processor )

[33South (Chris)]

Originally Posted by janoskiss

This is essentially what "our" imaging guys do when they use stacking software like registax, while picking the best frames to stack.

Im gonna need a faster puter, to process several million images with registax.