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Astrophysicist's reacts live to multiple new JWST images
The images at 7:17 which is compared to an earlier Hubble image is pretty nuts.
I know where i'll be getting all my puters background and screen saver images from in the coming decade.
JWST super high res images can be viewed/downloaded here
https://webbtelescope.org/news/first-images/gallery
The James Webb Space Telescope mirrors are aligned!
I'm staggered that with so many places as critical points of failure--the JWST got through all of them. Amazing.
I know she says the "spokes" are the result of the hexagonal shapes of the mirrors (six sided mirror; six spokes)--but--does someone have a simplified explanation of why that's true for me to grasp onto?
Watch the Webb Telescope launch animation
You're absolutely right, my comment should have targeted the live launch, sorry.
Still, that covers about 20 (shaky cam) seconds of the launch before they switch to an animation (!) of the launch.
Which brings me back to my original gripe: The Ariane 5 is an old vehicle which doesn't have onboard cameras. Private rocket launch companies have eclipsed it. And I think The European Space Agency is not keeping up.
As to cameras on the JWST itself, it looks like they didn't attach any for a reason: https://www.space.com/james-webb-space-telescope-no-cameras-reason
Didn't know that...
You get that's just a "preview" right? It's in the desc. It was done & shown before the launch, and I assume you knew the launch date (granted, it was postsponed several times, so admittedly not easy to keep track unless you have a passing interest about it). The actual live broadcast is at: https://youtu.be/7nT7JGZMbtM
Webb Backplane Pathfinder Arrives at JSC for Cryotesting
It might help to start with what the Backplane Pathfinder actually is - it's a non-flight replica of the Webb telescope’s center backplane (that link has more info and pictures).
Chamber A allows simulating the cold environment the real telescope will face in space, and is the same vacuum chamber where Apollo spacecraft were tested.
Now, to answer your question: They are testing the test procedures for the real telescope! (source: NASA). I realise that doesn't exactly answer your question, but I haven't found details of the actual tests they plan to run... so as a distraction, here are some more images - http://jwst.nasa.gov/images_backplane.html
Test it for what?
Hubble looks to the monkey head nebula
This stuff always makes me feel so small, but for some reason I can't get enough. Very excited for the JWST when it finally gets up there.
Billy Crystal Meets his Monster
The thumbnail image for this video has been updated - thumbnail added by eric3579.