James Webb telescope launch info

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Re: James Webb telescope launch info

#121  Postby Spearthrower » Jun 09, 2022 2:39 pm

We learned something about the distribution of dust grains in the solar system: there are shit loads.
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Re: James Webb telescope launch info

#122  Postby aufbahrung » Jun 09, 2022 3:05 pm

Spearthrower wrote:We learned something about the distribution of dust grains in the solar system: there are shit loads.


Lagrange points gonna be infested. Only need a couple of rocks with different spins in that gravity null point, and the what nots to graze one another and the place will fill up with millions of bullet sized 'grains' . Should have put it on the dark side of the moon. What were they thinking?
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Re: James Webb telescope launch info

#123  Postby Spearthrower » Jun 09, 2022 3:12 pm

Not so much as particulate entering a Lagrange point would have velocity, so would leave that Lagrange point at whatever speed it entered at.
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Re: James Webb telescope launch info

#124  Postby aufbahrung » Jun 09, 2022 3:28 pm

Spearthrower wrote:Not so much as particulate entering a Lagrange point would have velocity, so would leave that Lagrange point at whatever speed it entered at.


They do tend to collect trojan asteroids though...and the moon as a alternative would allow for mirror repair...too late for this mission I guess?
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Re: James Webb telescope launch info

#125  Postby Spearthrower » Jun 09, 2022 3:52 pm

Even proposed ideas of stationing man-made structures in Lagrange points accepts that on-board propulsion systems for corrections would be necessary as no Lagrange points are perfectly stable (to the best of my knowledge) due to following the radial velocity of their parent bodies, and those bodies themselves tend to have some eccentric deviation from an idealized orbit.

Even were some debris able to find its way in, it would soon find itself captured by the planetary body's gravity well. And it's very hard for something to just wander in. Debris entering is either part of the original proto-planetary disc, and thus has the same angular momentum as the rest of the system, or the debris would be from deep space and would be traveling fast and oblique, and wouldn't even slow down perceptibly.
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Re: James Webb telescope launch info

#126  Postby newolder » Jun 09, 2022 4:20 pm

Spearthrower wrote:We learned something about the distribution of dust grains in the solar system: there are shit loads.


Indeed there are. The asteroid count to 2018 is getting very silly and if we add comet-sourced dust and the interstellar contribution the object count is going to get astronomical very quickly. A source of the dust probably responsible for the "Zodiacal light" phenomenon was observed by the Juno probe as it passed by Mars on its way to scan Jupiter...

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Re: James Webb telescope launch info

#127  Postby Spearthrower » Jun 09, 2022 4:27 pm

Space is mislabelled: it should have been called stuff with some gaps. Pithy.
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Re: James Webb telescope launch info

#128  Postby newolder » Jun 09, 2022 4:44 pm

Even the gaps contain about 6 times more of the still unidentified dark/invisible matter than baryonic and then there's whatever dark energy turns out to be. Space, not STP :nod:
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Re: James Webb telescope launch info

#129  Postby Caper » Jul 03, 2022 1:03 am

Mark your calendar - July 12.

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Re: James Webb telescope launch info

#130  Postby The_Piper » Jul 03, 2022 11:15 am

They did release this sample image from the miri instrument already, but I don't really understand it yet. It's for spectrometry https://blogs.nasa.gov/webb/2022/06/16/webbs-mid-infrared-spectroscopy-will-reveal-molecules-elements/
It's looking at " bright K giant star HD 37122" I think.
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This graph illustrates that compared to Spitzer, it's fucking awesome. That's about all I can tell you. :teef:
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Re: James Webb telescope launch info

#131  Postby The_Piper » Jul 07, 2022 3:47 pm

I hope you don't mind me posting while having nothing to say except :eager: :excited: :dance: :eager: :excited:
The world needs this right now more than ever. Hopefully it will renew our faith in humanity, at least one aspect of it.
:eager: :excited:
5 more days!
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Re: James Webb telescope launch info

#132  Postby BlackBart » Jul 07, 2022 4:34 pm

They did take the lens cap off, right? :?
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Re: James Webb telescope launch info

#133  Postby i have no avatar » Jul 10, 2022 5:04 pm

List of targets for the first release at 10:30 a.m. EDT on the 12th in a live broadcast. The images will also be made available here.

    Carina Nebula
    WASP-96-b (spectrum)
    Southern Ring Nebula
    Stephan’s Quintet
    SMACS 0723

Source.
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Re: James Webb telescope launch info

#134  Postby The_Piper » Jul 11, 2022 12:26 am

They released another image recently, what they are calling a throwaway image to test the telescope's ability to roll to one side. It's also the deepest view of the universe ever taken. Most of the blobs are galaxies that have never been observed before. :)
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Re: James Webb telescope launch info

#135  Postby The_Piper » Jul 12, 2022 2:09 pm

19 minutes. :dance:
I'm currently watching at NASA's channel, linked below.
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Re: James Webb telescope launch info

#136  Postby Rumraket » Jul 12, 2022 5:02 pm

Exploding heads everywhere.
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Re: James Webb telescope launch info

#137  Postby The_Piper » Jul 12, 2022 7:15 pm

The shit's pretty awesome.
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Re: James Webb telescope launch info

#138  Postby felltoearth » Jul 13, 2022 6:53 pm

This meme wins

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