HomeLatest ThreadsGreatest ThreadsForums & GroupsMy SubscriptionsMy Posts
DU Home » Latest Threads » Forums & Groups » Main » General Discussion (Forum) » James Webb is Well Focuse...

Sat Mar 19, 2022, 06:49 PM

James Webb is Well Focused!

https://www.universetoday.com/155013/webb-has-now-taken-the-sharpest-image-the-laws-of-physics-allow/

8 replies, 972 views

Reply to this thread

Back to top Alert abuse

Always highlight: 10 newest replies | Replies posted after I mark a forum
Replies to this discussion thread
Arrow 8 replies Author Time Post
Reply James Webb is Well Focused! (Original post)
Disaffected Mar 2022 OP
PoindexterOglethorpe Mar 2022 #1
renate Mar 2022 #3
PoindexterOglethorpe Mar 2022 #5
rurallib Mar 2022 #2
USALiberal Mar 2022 #4
Trailrider1951 Mar 2022 #6
USALiberal Mar 2022 #7
Disaffected Mar 2022 #8

Response to Disaffected (Original post)

Sat Mar 19, 2022, 08:30 PM

1. My Son The Astronomer is giddy with delight.

As, apparently, are all astronomers.

Reply to this post

Back to top Alert abuse Link here Permalink


Response to PoindexterOglethorpe (Reply #1)

Sat Mar 19, 2022, 11:00 PM

3. OMG your son's an astronomer?!?!?!?!?!

Literally my dream job! Good for him!

Reply to this post

Back to top Alert abuse Link here Permalink


Response to renate (Reply #3)

Sun Mar 20, 2022, 11:09 AM

5. Yes, he is. He's actually in a PhD program

at George Mason University in Fairfax, VA, just outside Washington DC. His research is on exo planets.

One of his formal degree requirements is to get three professional articles published. One has already been accepted, he's nearly done with the rewrite, he's drafting the second, will start the third when number two is finished, and he's fine-tuning his research.

Apparently there are plenty of good jobs in his field. Plus, of course, he makes lots of contacts at various conferences he goes to. In the summer of 2019 there was one just for people doing his specific kind of exo planet research (radial velocity, here's a link to how it's done: https://www.planetary.org/articles/color-shifting-stars-the-radial-velocity-method) in Switzerland. Maybe 125 people altogether, so essentially they all know each other.

I constantly call him up with random astronomy questions, and he's always good at explaining things to me.

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Disaffected (Original post)

Sat Mar 19, 2022, 08:54 PM

2. oh boy!!!!

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Disaffected (Original post)

Sat Mar 19, 2022, 11:02 PM

4. Here's three paragraphs.......

Engineers and scientists for the James Webb Space Telescope have completed two more steps in the telescope’s primary mirror alignment process, and in a briefing today, officials said JWST’s optical performance appears to be better than even the most optimistic predictions.

The team released a new engineering image, showing the star 2MASS J17554042+6551277 in crisp clarity. This image demonstrates that all 18 mirror segments have been precisely aligned to act as one giant, high-precision 6.5-meter (21.3-foot) primary telescope mirror.

“We now have achieved what’s called ‘diffraction limited alignment’ of the telescope,” said Marshall Perrin, deputy project scientist for Webb at the Space Telescope Science Institute. “The mirrors are focused together as finely as the laws of physics allow, and this is the sharpest image you can get from a telescope of this size.”



More at link!

Reply to this post

Back to top Alert abuse Link here Permalink


Response to USALiberal (Reply #4)

Sun Mar 20, 2022, 12:36 PM

6. Take a close look at that image

All those fuzzy "stars" surrounding the bright star are actually galaxies.

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Trailrider1951 (Reply #6)

Sun Mar 20, 2022, 01:35 PM

7. So cool!

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Trailrider1951 (Reply #6)

Sun Mar 20, 2022, 04:15 PM

8. That's what I find really mind-blowing about such images.

Similar to the Hubble deep space, long exposures - peer at a tiny area of the cosmos for many days and come up with an image with thousands of objects in it which are almost all galaxies.

And some of the galaxies in the Webb image have never been seen before, even by Hubble.

Reply to this post

Back to top Alert abuse Link here Permalink

Reply to this thread