Forum menu
Another question: why do the objects (?galaxies) have symmetrical rays of light? 6 brighter ones at 12, 2, 4, 8 and 10 o’clock, and fainter rays at 3 and 9 o’clock?
Apologies if these are, too basic, questions
How far away from earth would JWST have to be to capture images of it in the past? Get some great pictures of dinosaurs, the Romans, the Mayans and stuff...
gauss1777
Free Member
Another question: why do the objects (?galaxies) have symmetrical rays of light? 6 brighter ones at 12, 2, 4, 8 and 10 o’clock, and fainter rays at 3 and 9 o’clock?Apologies if these are, too basic, questions
Your question is perfectly valid. 🙂 We've all asked it!
Those are stars in our Milky way, it's light refraction or something like that, from using a small aperture I guess. (that's how you get starbursts from normal camera).
It's intersting, because they are like a finger print for the telescope in question, that is Webbs unique fingerprint, if you look at Hubble there's usually 4 prominent spikes at 12, 3, 6, and 9.
Each telescope is unique.
I think Webb maybe has more due the the hexagonal shape of the sections of the mirror too.
johndoh
Free Member
How far away from earth would JWST have to be to capture images of it in the past? Get some great pictures of dinosaurs, the Romans, the Mayans and stuff…
The same number of light years as years had those events in the past. But it's really physically impossible unless we have instantaneous travel. Even if they travel away from Earth at the speed of light, they'll only ever be able to see the point in time that they left Earth at.
Each telescope is unique.
I think Webb maybe has more due the the hexagonal shape of the sections of the mirror too.
Gosh. Thanks.
The same number of light years as years had those events in the past. But it’s really physically impossible unless we have instantaneous travel. Even if they travel away from Earth at the speed of light, they’ll only ever be able to see the point in time that they left Earth at.
Awww 🙁
😂😂😂😂
theres a civilization out there watching Hannibal crossing the Alps 😉
Klunk
Free Member
theres a civilization out there watching Hannibal crossing the Alps 😉
A fair point, we just need to get a loan of their video tapes. 😆
But what does it actually do for us- Humanity that is.
10 billion dollars?
Is that all?
Musk & Bezos spend that on spaceships just for fun. They could probably solve poverty on their own.
As one of the NASA team said in a TV interview - it's giving us answers to questions but we don't know what the questions are yet (or something to that effect).
Invaluable info that will become evident in due course. Superb stuff.
The same number of light years as years had those events in the past. But it’s really physically impossible unless we have instantaneous travel. Even if they travel away from Earth at the speed of light, they’ll only ever be able to see the point in time that they left Earth at.
Unless someone in the universe left a really big mirror pointing towards us. The view in that could be interesting (though actually seeing anything would be very difficult unless it was a REALLY big mirror).
gauss1777
Free MemberAnother question: why do the objects (?galaxies) have symmetrical rays of light? 6 brighter ones at 12, 2, 4, 8 and 10 o’clock, and fainter rays at 3 and 9 o’clock?
Apologies if these are, too basic, questions
It's from the shape of the mirrors and the struts
More detail - see here:
Excellent multi21, that's class. Hadn't seen that before.
Excellent multi21, that’s class. Hadn’t seen that before.
Indeed. Thank you.
If anyone want to loose a bit of time this afternoon this is a nice way to do it:
https://johnedchristensen.github.io/WebbCompare/basic.html
Looking at the detailed ones full screen, on a big monitor, really makes it easy to see how the new images compare to what we were able to get before. Stunning doesn't really cover it.
https://johnedchristensen.github.io/WebbCompare/Southern_Nebula.html
https://johnedchristensen.github.io/WebbCompare/Carina.html
https://johnedchristensen.github.io/WebbCompare/Stephans_Quintet.html
https://johnedchristensen.github.io/WebbCompare/Deep_Field.html
Emdy done their own edits? 😆
[img] 
[/img]
[img] 
[/img]
[img] 
[/img]
[img] 
[/img]
[img] 
[/img]
[img] 
[/img]
nice info on the galaxy that is visible through gravitational lensing.
Still enjoying the imaging and hopes for future information, but this is worrying.
https://news.sky.com/story/amp/meteoroid-hit-has-caused-significant-uncorrectable-damage-to-james-webb-space-telescope-12655489
Is it the one in Elite on then?
matt_outandabout
Full MemberStill enjoying the imaging and hopes for future information, but this is worrying.
https://news.sky.com/story/amp/meteoroid-hit-has-caused-significant-uncorrectable-damage-to-james-webb-space-telescope-12655489/blockquote >The point they've put the telescope into orbit around is unstable (Earth-Sun L2 Lagrange), so in theory it shouldn't accumulate debris long term. Hopefully just a bit of bad luck rather than a sign of things to come.
Hopefully just a bit of bad luck rather than a sign of things to come.
I hope it’s just a freak occurrence, kinda like what happened when I collected my brand new Tiguan from the dealer in Carlisle to drive the 50 miles back home to kirkcudbright, 3 miles into the journey home a rock was kicked up by a car in front and bounced on my bonnet leaving a dent then smashed into the windscreen causing a massive crack, ho-hum!
I'd doubt they sent an unprotected mirror into space without expecting some damage over time.
Theres actually a brilliant Horizon documentary on iplayer if it's not been mentioned:
It's regarding the design, construction and deployment of the Webb scope rather than the pictures, really interesting, especially the solar shield it needs to prevent it being cooked by the sun, and how they polished the mirrors and well all of it really.. mind blowing stuff.
^^ I've not seen it yet but apparently sis-in-law is in it, albeit briefly 🙂
That horizon doco was brilliant, I saw it the other night, no second chances everything had to work or it will all fail...if you haven't seen it..put it on your must watch list
The damage was done a while ago unless its another one that has happened.
A good example of the scale regarding the recently released picture of the pillars of creation, my feeble mind is still trying to comprehend the image
https://twitter.com/willgater/status/1586023809119055875?s=46&t=aQuUYnOgaOxxIGFmoLj1PA
"Space is big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it's a long way down the road to the drug store, but that's just peanuts to space".
Do they mean 'The son' or 'the sun'?
Do they mean ‘The son’ or ‘the sun’?
Zoom in, it does say ‘sun’, but there’s a star directly above the ‘u’ making it look like an ‘o’.
Ta.
🥸
BBC2 now
Super Telescope: Mission to the edge of the Universe
is that new or is it the same one that came out like, last year or something?
Latest photo How about "a star so young that many Stone Age cave paintings pre-date it"?
I love how on the one hand the images are incredible, but on the other hand they also look like every SF Masterworks series book cover. I'm pretty sure that slowoldman's link is just from my cover of The Stars My Destination
Love it, more puzzles to learn about:
https://www.bbc.co.uk/news/science-environment-66974738
And some more great images and puzzles
https://webbtelescope.org/contents/news-releases/2023/news-2023-148
https://www.bbc.co.uk/news/resources/idt-611525eb-3a0c-4a68-bf54-485df138b6f6
A bite size guide to some of the images.
A bite size guide to some of the images.
Still nothing on the spaceship front ?. Never mind.
Maybe one day eh 😕
As I’ve mentioned before on this thread, my brother in law and his wife were both major contributors to the project. We’ve spent Christmas with them and caught up - they are re-iterating what’s been said in the media, the official line reflects what the reality is - and they are really happy with what’s happening- way exceeding expectations.
Stunning!
I was listening to the Infinite Monkey Cage yesterday on my travels - they had a good one on stargazing: https://www.bbc.co.uk/programmes/p0gr7pqp
Image from the link above:
[img] 
[/img]