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(Phys Org2)   Here's the sharpest image ever of universe's most massive known star. Cool? It's absolutely Chile   (phys.org) divider line
    More: Interesting, Star, Astronomy, capabilities of the 8.1-meter Gemini South telescope, Hubble Space Telescope, Association of Universities for Research in Astronomy, capabilities of the Zorro instrument, star R, Gemini Observatory  
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1421 clicks; posted to STEM » on 19 Aug 2022 at 10:37 AM (5 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook



11 Comments     (+0 »)
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2022-08-19 10:56:46 AM  
The two stars at the bottom left just ... disappeared? What's their names, Alderaan and Death Star?
 
2022-08-19 11:06:35 AM  

Alien Robot: The two stars at the bottom left just ... disappeared? What's their names, Alderaan and Death Star?


Their International Astronomical Union designations are Heche and ON-J.
 
2022-08-19 11:15:36 AM  
It's the sharpest image until JWST points at it.
 
2022-08-19 12:08:48 PM  

markie_farkie: It's the sharpest image until JWST points at it.


I was hoping it had, and that was what TFA was about.
 
2022-08-19 12:11:47 PM  
i.imgur.comView Full Size
 
2022-08-19 12:40:45 PM  
You can't fool me a second time.  That's slice of pepperoni.
 
2022-08-19 12:55:03 PM  

markie_farkie: It's the sharpest image until JWST points at it.


In terms of angular resolution, this is several times better than JWST can ever achieve. Speckle imaging essentially eliminates distortion by the atmosphere and helps giant mirrors achieve their full theoretical resolution, although the field of view is extremely narrow.
 
2022-08-19 3:24:13 PM  
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2022-08-19 9:59:40 PM  
Are those photos resolvable disks or is that just blur from brightness?
 
2022-08-20 12:39:31 AM  
I once saw a sharper image in the mall.
 
2022-08-20 1:35:20 AM  

yakmans_dad: Are those photos resolvable disks or is that just blur from brightness?


Mostly brightness. The faintest stars in each image are pretty much at the theoretical limit of how tightly the respective mirrors are able to focus incoming light from point sources, and even Gemini can't resolve stellar disks at a distance of 160,000 light-years.
 
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