I think it would be really cool if the first photos paid homage to Hubble by re-creating some of its most famous photos in higher resolution.
James Webb‘a spectrum is red and infrared whereas Hubble was more visible light and UV. So you wouldn’t get the same but higher resolution photos out of Webb.
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James Webb‘a spectrum is red and infrared whereas Hubble was more visible light and UV. So you wouldn’t get the same but higher resolution photos out of Webb.
Not exactly, but I still think it'd be cool, maybe even moreso. And also, any kind of multispectral image needs to be false colour anyways so that we can can view it, so it might end up pretty close!
The Hubble deep field has a big cross-hair on it. Webb will see galaxies behind and consequently before it too. Will need the right alignment and substantial time though... Hopefully the good news on the remaining fuel will put that up in the queue.
Apparently the original deep field image had no scientific objective but was a directive from NASA to spark interest.
Not exactly, but I still think it'd be cool, maybe even moreso. And also, any kind of multispectral image needs to be false colour anyways so that we can can view it, so it might end up pretty close!
Exactly.
How it's done
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Since this was bumped, worth pointing out that the hurry up phase is almost done. Should be in the L2 location in about a day from now. Then we wait for this thing to calibrate and cool down.
Still cruising at a fair clip. Are there thrusters to slow it down, or is there some kind of force a the L2 location that stops it?
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Since this was bumped, worth pointing out that the hurry up phase is almost done. Should be in the L2 location in about a day from now. Then we wait for this thing to calibrate and cool down.
Still cruising at a fair clip. Are there thrusters to slow it down, or is there some kind of force a the L2 location that stops it?
It’s speed is given relative to earths. It orbits at the angular rate as the earth so its linear velocity is higher than the earth
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Since this was bumped, worth pointing out that the hurry up phase is almost done. Should be in the L2 location in about a day from now. Then we wait for this thing to calibrate and cool down.
Still cruising at a fair clip. Are there thrusters to slow it down, or is there some kind of force a the L2 location that stops it?
There are thrusters to slow it down, but it'll be pretty minimal changes.
As for a force at L2 that stops it, not really, but also kind of.
Essentially they've given in just enough of a push to get there with essentially zero speed (relative to earth).
It's kid of like putting up hill. You give it just enough of a push to get to the cup, and then it falls in.
They've given it enough of a push to get to L2, and when it gets there it'll settle into orbit around it (with some minor adjustments).
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There are thrusters to slow it down, but it'll be pretty minimal changes.
As for a force at L2 that stops it, not really, but also kind of.
Essentially they've given in just enough of a push to get there with essentially zero speed (relative to earth).
It's kid of like putting up hill. You give it just enough of a push to get to the cup, and then it falls in.
They've given it enough of a push to get to L2, and when it gets there it'll settle into orbit around it (with some minor adjustments).
Webb doesn't have reverse thrusters, the thrusters would be detrimental to keeping the telescope cold. They are doing it by using just enough speed to insert in orbit. It does have forward thrusters for station keeping though.
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Webb doesn't have reverse thrusters, the thrusters would be detrimental to keeping the telescope cold. They are doing it by using just enough speed to insert in orbit. It does have forward thrusters for station keeping though.
yeah, that's what I meant. They aren't there to stop it, just make any fine tuning once it's there.
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I am not smart enough, but I wish I had a career in astronomy. Not only does it seem awesome and interesting, but it feels like laying the groundwork for humanity's long term future and that is an important and noble task.
Makes me feel silly when I stress about everyday things.
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I am not smart enough, but I wish I had a career in astronomy. Not only does it seem awesome and interesting, but it feels like laying the groundwork for humanity's long term future and that is an important and noble task.
Makes me feel silly when I stress about everyday things.
I have also dreamed about making a career switch to something related to space, but my location and the amount of work I’d have to do to change to that career make it much more realistic to keep it as a hobby.
A lot of the information provided on James Webb discusses how it will look at things that have been redshifted into the infrared and hence look far and old. That's cool from universe forming theories, but personally, I am more interested in the possibility of nearby life. Some of the media reports that James Webb will be able to look at planets, like in the Trappist-1 system, and detect if they have atmospheres. If they do have atmospheres it can detect if they have chemical signatures of life as we know it. To me, that would change my perspective on the universe a lot more than refinements on theories describing how early stars formed.