| Anybody watching the JWST launch? 11:35 - Dec 25 with 1412 views | Wicksy |
45 mins to go. Weather looking a bit iffy |  |
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| Anybody watching the JWST launch? on 11:53 - Dec 25 with 1361 views | Guthrum |
Would normally be watching that. But it coincides with the time the turkey has to come out of the oven. |  |
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| Anybody watching the JWST launch? on 17:16 - Dec 25 with 1237 views | Steve_M |
Definitely a highlight of Christmas Day that is launched successfully.
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| Anybody watching the JWST launch? on 21:42 - Dec 25 with 1126 views | The_Flashing_Smile |
| Anybody watching the JWST launch? on 17:16 - Dec 25 by Steve_M |
Definitely a highlight of Christmas Day that is launched successfully.
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Might be a daft question, but can we see it from Earth (like we can the ISS)? |  |
| Trust the process. Trust Phil. |
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| Anybody watching the JWST launch? on 21:46 - Dec 25 with 1123 views | Wicksy |
| Anybody watching the JWST launch? on 21:42 - Dec 25 by The_Flashing_Smile |
Might be a daft question, but can we see it from Earth (like we can the ISS)? |
Afraid not. It's already 80,000+ miles from earth heading off to about 900,000 miles. ISS orbits at about 250 miles high I think | |
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| Anybody watching the JWST launch? on 07:57 - Dec 26 with 1000 views | Steve_M |
| Anybody watching the JWST launch? on 21:42 - Dec 25 by The_Flashing_Smile |
Might be a daft question, but can we see it from Earth (like we can the ISS)? |
Nope, it’ll be about a million and a half miles away at a place called a Lagrange point where the gravity of Earth and the Sun are in balance. Hubble, in contrast, is 550km above the Earth. | |
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| Anybody watching the JWST launch? on 09:09 - Dec 26 with 960 views | NthQldITFC |
| Anybody watching the JWST launch? on 07:57 - Dec 26 by Steve_M |
Nope, it’ll be about a million and a half miles away at a place called a Lagrange point where the gravity of Earth and the Sun are in balance. Hubble, in contrast, is 550km above the Earth. |
The Lagrange point has always held a certain appeal to me.
I have always, perhaps naively, imagined that it is something like an indolent hotel lobby in a hot and humid country, filled with languorous people in leather armchairs, with an atmosphere permeated by the smell of Gauloises and ripe Camembert.
Of course, the above assumes that I am correct in thinking it is pronounced luh-grohn-juh.
If it is actually pronounced la-gray-nje, then I can only presume that it is a saloon bar in the Wild West, populated with good honest folk, sat drinking nervously whilst fearing the entrance of the corrupt Marshall and his band of hired killers. [Post edited 26 Dec 2021 10:48]
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| Anybody watching the JWST launch? on 10:54 - Dec 26 with 890 views | Samuelowen88 |
Around 1 million miles. 1.5 million Km.
On thing thats been bugging me, and I'll admit a football forum may not be the best place to ask.
JWST has a heat shield, that has to be pointed at the sun at all times.
As far as i am aware the reflector doesn't pivot.
So how can it see all the sky? Or maybe it can't. If it is always pointed towards the sun (imagine 2D and call that X) then the telescope can pivot 360 around X and see along Y. But it could never look further along the X? |  |
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| Anybody watching the JWST launch? on 11:40 - Dec 26 with 857 views | Wicksy |
| Anybody watching the JWST launch? on 10:54 - Dec 26 by Samuelowen88 |
Around 1 million miles. 1.5 million Km.
On thing thats been bugging me, and I'll admit a football forum may not be the best place to ask.
JWST has a heat shield, that has to be pointed at the sun at all times.
As far as i am aware the reflector doesn't pivot.
So how can it see all the sky? Or maybe it can't. If it is always pointed towards the sun (imagine 2D and call that X) then the telescope can pivot 360 around X and see along Y. But it could never look further along the X? |
I don't think it can see all of the sky all of the time. But as it orbits the sun, along with the earth, it'll be able to see all of the sky over the course of a year .
I think. | |
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