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Old 25-10-2016, 11:08 AM
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Rayleigh criterion not a fundamental limit

Interesting news. Now if they can just fix my terrible seeing...

http://phys.org/news/2016-10-physici...igh-curse.html
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Old 25-10-2016, 12:35 PM
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Amazing how you can look at things in a different light (pun intended) and come up with a new set of rules

Paper here if you can follow it !
https://arxiv.org/pdf/1606.08332v1

Judging by the dual incoherent lighting process and holograms they are using, its not something we will be able to do for amateur staronomy in the near future !
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Old 26-10-2016, 03:41 AM
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interesting stuff, what little I understood - thanks Rick.

looks to me like the starting point is that there be no atmosphere and that system noise should be low enough to permit photon counting. Good for microscopy, but probably rules it out for us for now...
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Old 26-10-2016, 07:55 AM
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I didn't think it would have any immediate application to amateur astrophotography, but it's interesting when something thought to be a fundamental limit is found not to be...
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Old 26-10-2016, 08:07 AM
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It is definitely itself interesting, I don't see myself getting seeing good enough to reach the limit of my 5.1" scope (~0.89") for testing.
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Old 26-10-2016, 01:37 PM
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Interesting, thank you Rick for sharing.

I will dare to add, that two fundamental limits for most amateur astronomers are cash and time
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Old 26-10-2016, 02:22 PM
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Quote:
Originally Posted by Slawomir View Post
I will dare to add, that two fundamental limits for most amateur astronomers are cash and time
How very true Suavi. To pick up Rick's point though, we can continue to surprise ourselves by exceeding limits that were until recently considered 'unexceedable'. I have found a way to remove the time limit by finally retiring from my full time work. There may, however, be an inverse relationship between the input metrics of time and cash. This will be explored further (time permitting)
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Old 27-10-2016, 11:14 AM
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Originally Posted by Ryderscope View Post
How very true Suavi. To pick up Rick's point though, we can continue to surprise ourselves by exceeding limits that were until recently considered 'unexceedable'. I have found a way to remove the time limit by finally retiring from my full time work. There may, however, be an inverse relationship between the input metrics of time and cash. This will be explored further (time permitting)
Congrats on your retirement, Rodney. I'm hoping to find there are huge quantities of dark cash out there somewhere
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