JWST launch delayed to 2019
Discussion
The Ariane rocket deliberately gave it slightly less speed than was needed for this. So the acceleration of the JWST's course correctly burns would take it the rest of the way and it wouldn't need to waste fuel in slowing down. Turning around to do this would also have caused heating issue from the Sun.
JWST is now on station. 
They fired the thrusters for almost 5 minutes to complete the process.
Info about the orbit & the schedule:
https://webb.nasa.gov/content/about/orbit.html
They fired the thrusters for almost 5 minutes to complete the process.
Info about the orbit & the schedule:
https://webb.nasa.gov/content/about/orbit.html
Scientists spoke about the preparation of the James Webb space telescope for work - it should send the first photos in June. 50 movements of the main mirror segments of the telescope were carried out in the process of its alignment, and all of them passed without failures.
The entire calibration process is expected to be completed by the time the telescope has been in space for about six months, approximately June 25, 2022.
The entire calibration process is expected to be completed by the time the telescope has been in space for about six months, approximately June 25, 2022.
Beati Dogu said:
it's a bit cross eyed at the moment. All 18 eyes looking in the wrong direction.
Apparently that star would be too bright for it to look at normally, but it's fine to use for calibration.
Explained by an excitable astrophysicist…Apparently that star would be too bright for it to look at normally, but it's fine to use for calibration.
https://youtu.be/6v72L_1L4lQ
A cool tweet/video of them refining their test image:
https://twitter.com/NASAWebb/status/15041223107810...
https://twitter.com/NASAWebb/status/15041223107810...
Jeez they just need to link from Twitter to a decent article on their website.
Trying to deliver a technical description on Twitter is a horrible experience.
But that looks great. All aligned. But pointing just at the Large Magellanic Cloud for now, so not deep field IR specifically?!
It'll be exciting to see their first 'what we could do before' vs their 'what we can do now' comparison images!
Trying to deliver a technical description on Twitter is a horrible experience.
But that looks great. All aligned. But pointing just at the Large Magellanic Cloud for now, so not deep field IR specifically?!
It'll be exciting to see their first 'what we could do before' vs their 'what we can do now' comparison images!
Bit Off/T but I'm sure everyone has heard that the Event Horizon Telescope array has an announcement to make tomorrow. These were the guys that produced the picture of the black hole in Messier 87.
Now I don't know, but they've said it's something to do with the Milky Way. As they produce imaging and have been looking at black holes and we haven't yet 'seen' Sgr A*, I can't guess what it may be...
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Back On/T, those latest pics from JWST were incredible, especially when compared through time from previous images, the quality is off the scale - I bet they are 'pumped' as they say.
Now I don't know, but they've said it's something to do with the Milky Way. As they produce imaging and have been looking at black holes and we haven't yet 'seen' Sgr A*, I can't guess what it may be...
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Back On/T, those latest pics from JWST were incredible, especially when compared through time from previous images, the quality is off the scale - I bet they are 'pumped' as they say.
https://www.bbc.co.uk/news/science-environment-617...
Anyone else really concerned that after only a few months it’s already damaged? Surprising how much material is actually up there.
I’m thinking now that this unfortunately won’t be as long lived as Hubble 😞
Anyone else really concerned that after only a few months it’s already damaged? Surprising how much material is actually up there.
I’m thinking now that this unfortunately won’t be as long lived as Hubble 😞
John145 said:
https://www.bbc.co.uk/news/science-environment-617...
Anyone else really concerned that after only a few months it’s already damaged? Surprising how much material is actually up there.
I’m thinking now that this unfortunately won’t be as long lived as Hubble ??
From the article - Anyone else really concerned that after only a few months it’s already damaged? Surprising how much material is actually up there.
I’m thinking now that this unfortunately won’t be as long lived as Hubble ??
"We always knew that Webb would have to weather the space environment, which includes harsh ultraviolet light and charged particles from the Sun, cosmic rays from exotic sources in the galaxy, and occasional strikes by micrometeoroids within our Solar System," said Paul Geithner, technical deputy project manager at Nasa's Goddard Space Flight Center in Greenbelt, Maryland.
"We designed and built Webb with performance margin - optical, thermal, electrical, mechanical - to ensure it can perform its ambitious science mission even after many years in space."
Webb was designed with a near 10 year life span from the outset. It was never meant to last as long as Hubble.
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