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-   -   James Webb Space Telescope (https://www.mersenneforum.org/showthread.php?t=27092)

masser 2021-12-22 00:14

1 Attachment(s)
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Uncwilly 2021-12-25 07:32

[XKCD]2559[/XKCD]

xilman 2021-12-25 08:10

launch
 
[url]https://twitter.com/joebarnard/status/1474454697150844934[/url]

mathwiz 2021-12-25 13:16

Bon voyage and godspeed, JWST!!

Uncwilly 2021-12-25 14:13

Now begins the month of nail biting as deployments happen.

Dr Sardonicus 2021-12-25 15:48

[QUOTE=Uncwilly;596207]Now begins the month of nail biting as deployments happen.[/QUOTE]There are something like 300 steps, every one of which has to go right (or [i]made[/i] to go right), in order for the mission not to fail before JWST can even begin to make observations.

If all goes well, there may be folks with their nails bitten off up to their elbows.

Uncwilly 2021-12-25 16:05

[QUOTE=Dr Sardonicus;596218]There are something like 300 steps, every one of which has to go right (or [i]made[/i] to go right), in order for the mission not to fail before JWST can even begin to make observations.[/QUOTE]Not quite the full picture. The deployments then allow the commissioning phase to start. All of the mirrors have to be aligned (separate from deployment). The scope has to cool down (even with the sunshade it won't be at operating temperature at the end of the 30 days. And the instruments have to be calibrated. Etc. So, expect 6 months from arrival at the L2 halo orbit before any 'real' data shows up. And these will likely be just a few easy (low exposure time) photogenic targets.

Xyzzy 2021-12-27 16:40

[YOUTUBE]shPwW11MEHg[/YOUTUBE]

tServo 2021-12-27 22:39

My favorite way to keep track of the status of Webb is one of NASA's pages seen below. It has all kinds of neat stuff on it like distance counters, a timeline of the steps it has done/yet to do, and links to animations of what it is doing or about to do.
Check it out!


[URL]https://webb.nasa.gov/content/webbLaunch/whereIsWebb.html[/URL]

tServo 2022-01-01 14:33

Webb's sunshield has been unfurled !
This was a real nail-biter moment as over a hundred components had to work perfectly to
deploy the 5 layers.


Next up is the tensioning of the layers to get them taut so the heat they trap will be radiated properly and efficiently to space away from the telescope.

firejuggler 2022-01-01 18:13

I have seen on twitter a pettition to rename JW(James Webb)ST to BW( Betty White) ST.

I doubt it will get any traction, but thats a nice intention.
tServo : yes I love this website too.


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