Quantum entropy? 😉
There's lots of ways you can deconvolute. The setup I have used a off-axis camera to take 1-2 second images of a guide star and that would then allow the telescope mount to move and track the star in real time allowing the main camera todo long exposure 10-20 minutes each. The technique I used was to store each short exposure and then use the short exposures taken during the long exposure to make a PSF which takes note of any mount tracking errors or atmosphere change due to elevation (approaching the horizon) or atmospheric turbulence. A passive 'software active optics' if you will.
The purpose was to pull really dim objects and small objects out of the noise floor with a 4" refractor in normal UK skies around London:
The arrows here show very dim objects - I can't remember the classification of brightness but it's pretty good for such a small telescope.
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"In quantum information theory, quantum relative entropy is a measure of distinguishability between two quantum states."
"Maximum Entropy Method: A deconvolution algorithm which functions by minimizing a smoothness function ("entropy") in an image."
Before you smart guys chipped in, this thread was undergoing a gradual decline into disorder. 😊
Correct on both. I had the pleasure of selling quantum randomness in the last job (current looking for a new one) it's surprising difficult to sell the public random numbers 😀 (there's a bit more to this - quantum randomness, certifiable to come from a quantum source using bells theorem and each can be proven not to have had a third party eavesdrop by checking the noise of the entanglement.). A quantum random number is also provably without bias.. which makes it extremely useful (although a true random number generator is also as random from work with CERN Markov models..).
Finding the lowest entropy point for an image processing function is quite common - and you can use a quantum computer to perform this although it's very slow given the number of pixels that need processing.
Quantum computers basically allow you to all the values of a variable simultaneously - only requiring re-runs for stastical confidence and to adjust the input to obtain the next root (as a single result comes back each run). The LT;DR is that you could speed up entropy calculations with almost infinite precision.
I'm not smart! Just curious.
I also adapted microscope focusing using Z-axis PSF using FFT phase correlation to find the best focus adjustment for telescope images too (yet another PSF). That worked well.
The traditional brightness scale used in astronomy runs from 1 to 6, where lower numbers represent a brighter object.
That makes me a 6!
Some money to be made selling them to government though. (the outfit I used to work for designed 2 generations of ERNIE). ERNIE 5 is indeed quantum.
(for non UK residents https://www.lightstraw.uk/gpo/posb/ernie/tech1.html#2)
And I thought ERNIE was The Fastest Milkman in the West!
Learning all the time!
Eh, Pete? 😉
Wow, you're making an exception. And here I thought it was only Leonard Cohen worthy of such. I'm honored!.
must be cuz I'm from Canader, eh.
S'Funny, I have a shirt like that! 😀
Bought it years ago for much money because I liked it.
Pretty as the pictures from the JWST are, I am still learning nothing new.
Currently more interested in PentaQuarks and the mediators of the Strong Force, Pions:
https://en.wikipedia.org/wiki/Pentaquark
https://en.wikipedia.org/wiki/Pion
I seem to have Particle Physicist written all over my forehead! 😎
Bought it years ago for much money because I liked it.
Pretty as the pictures from the JWST are, I am still learning nothing new.
Currently more interested in PentaQuarks and the mediators of the Strong Force, Pions:
https://en.wikipedia.org/wiki/Pentaquark
https://en.wikipedia.org/wiki/Pion
I seem to have Particle Physicist written all over my forehead! 😎
That’s closer than part time geographer. Then again, it’s better to “stick with what you know”, no? 🙂
Clearly my Forum reputation lies in tatters, following my lack of Knowledge about the precise Equatorial location of Uganda! 😡
But then most Americans think Russia is somewhere near Cuba, so it's surely not worse. 😀
Anyone who has never made a mistake has played it all too safe, IMO.
I don't make simple mistakes. I make extremely complicated ones. 🙂
But then most Americans think Russia is somewhere near Cuba, so it's surely not worse. 😀
Anyone who has never made a mistake has played it all too safe, IMO.
I don't make simple mistakes. I make extremely complicated ones. 🙂
Pete, I don't want to stick with what I know. That would represent very little when it comes to Cosmology!
I want to find out about new things, but need an incentive to do so. Fortunately that is supplied by all the good folks who contribute to this thread.
I just wish I could make fewer mistakes when trying to share my findings! 🤓
I want to find out about new things, but need an incentive to do so. Fortunately that is supplied by all the good folks who contribute to this thread.
I just wish I could make fewer mistakes when trying to share my findings! 🤓
Well I Never!(can someone look up that expletive, I've never really understood it's application), to suggest I meant any such untoward attribution to my fellow members(this is personally in reference to you Gaulu), is simply beyond comprehension. OTOH, it may be in your paisano's best interest to look up the locations of "America" and er..."Canader". Might I suggest you have a umm.. private interaction?
don't want to soften that stiff upper lip. 😎
don't want to soften that stiff upper lip. 😎
"Well, I never did" is the sort of expression your Grandfather would use in polite company to express surprise.
Nobody can explain it.
Back to Cosmology. We are all tremendously interested in the James Webb Space Telescope. Is it better that Hubble?
Judge for yourselves:
Nobody can explain it.
Back to Cosmology. We are all tremendously interested in the James Webb Space Telescope. Is it better that Hubble?
Judge for yourselves:
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