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James Webb Space Telescope launch & deployment simulation

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#1 25585

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Posted 05 March 2020 - 08:14 AM

https://youtu.be/v6ihVeEoUdo

 

Beautiful on a big screen. 


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#2 Joe1950

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Posted 05 March 2020 - 09:01 AM

Very nicely done and informative! Thanks.


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#3 25585

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Posted 05 March 2020 - 09:19 AM

Dr. Eric Smith of Griffith  https://youtu.be/M6y919Q24kw


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#4 petert913

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Posted 05 March 2020 - 09:49 AM

Fascinating.  Hope it finally launches next year.


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#5 Astroman007

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Posted 05 March 2020 - 09:51 AM

Fascinating.  Hope it finally launches next year.

It launched in 2017, 2018 too I think. Who knows when it will launch again? tongue2.gif

 

I've been waiting for this, impatiently.


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#6 Astroman007

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Posted 05 March 2020 - 10:05 AM

https://youtu.be/v6ihVeEoUdo

 

Beautiful on a big screen. 

Amazing video. Thank you for sharing.

 

With so much that could go wrong, the long wait is quite understandable. That "foil" is quite fragile in relation to a strike from debris; actually the entire craft is, in its "open" state. What provision is in place to protect it?

 

If the craft needs repair or upgrades, like the Hubble has more than once in the past, how will we get there to perform them?


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#7 25585

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Posted 05 March 2020 - 10:39 AM

JWST compared to Hubble & Spitzer  https://youtu.be/ah6KrqABzmk


Edited by 25585, 05 March 2020 - 10:40 AM.

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#8 jmorales21

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Posted 05 March 2020 - 11:12 AM

Amazing video. Thank you for sharing.

 

With so much that could go wrong, the long wait is quite understandable. That "foil" is quite fragile in relation to a strike from debris; actually the entire craft is, in its "open" state. What provision is in place to protect it?

 

If the craft needs repair or upgrades, like the Hubble has more than once in the past, how will we get there to perform them?

This telescope is not designed to be serviced. It will also reside is the second Lagrange point (L2) of the Earth and we have no capability to go there for fix/service. If anything fails, it will be a big (and expensive) paperweight in orbit.


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#9 davidpitre

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Posted 05 March 2020 - 04:18 PM

I got chills watching that. I am so excited about this telescope, and expect it to work as designed. A lot has gone in to it



#10 Piero DP

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Posted 05 March 2020 - 07:50 PM

Very beautiful! Thanks for sharing, Richard.

#11 EJN

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Posted 06 March 2020 - 02:14 PM

I didn't watch the video. Does it include something getting stuck and failing to deploy

properly, and everyone going into panic mode?



#12 MikeMiller

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Posted 06 March 2020 - 02:20 PM

Amazing video. Thank you for sharing.

 

With so much that could go wrong, the long wait is quite understandable. That "foil" is quite fragile in relation to a strike from debris; actually the entire craft is, in its "open" state. What provision is in place to protect it?

 

If the craft needs repair or upgrades, like the Hubble has more than once in the past, how will we get there to perform them?

Most of the protection to Webb will be that it isn't in low Earth orbit like Hubble. There just isn't a lot of stuff flying around at L2.

 

I don't think the aluminum body of Hubble would protect it from anything anyhow. Even something tiny would go straight through it at orbital speeds. Hubble's body is more to keep stray light from hitting the mirror. Since Webb will be pointing away from the sun, this isn't an issue.



#13 MikiSJ

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Posted 06 March 2020 - 02:42 PM

I am a solid proponent of unmanned space flight and definitely want the Webb to succeed - but so many parts and such a complicated unraveling of kit makes me want to be asleep when it launches.



#14 llanitedave

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Posted 07 March 2020 - 11:57 AM

I am a solid proponent of unmanned space flight and definitely want the Webb to succeed - but so many parts and such a complicated unraveling of kit makes me want to be asleep when it launches.

The launch will be the easy part.



#15 RyanSem

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Posted 10 March 2020 - 09:28 PM

What a great video. Really makes me excited to see its launch! How does it reorient itself to make different observations?

#16 jmorales21

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Posted 10 March 2020 - 09:45 PM

What a great video. Really makes me excited to see its launch! How does it reorient itself to make different observations?

Webb has solid state gyroscopes that the telescope uses for pointing and "slewing" to its targets. The actual movement comes from reaction wheels, and these new gyroscopes are used to detect and measure the movement.


Edited by jmorales21, 10 March 2020 - 09:47 PM.

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#17 HouseBuilder328

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Posted 14 March 2020 - 10:33 AM

I can't find the article now, but there was one (it could be total BS), but talked about how delayed the James Webb telescope is and how giant ground telescopes are "catching up" in technology and image quality due to the ease of building them (other than protests on particular lands).



#18 jmorales21

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Posted 14 March 2020 - 12:22 PM

I can't find the article now, but there was one (it could be total BS), but talked about how delayed the James Webb telescope is and how giant ground telescopes are "catching up" in technology and image quality due to the ease of building them (other than protests on particular lands).

In some aspects, it is not BS. Resolution for example is much better from Earth than from space telescopes (current and future) because of larger mirrors, adaptive optics and optical interferometry, but space telescopes still have a huge advantage over Earth-based observation in that they are fully capable of observing in wavelengths that the atmosphere blocks, like infrared, ultraviolet or x-rays, for example.
This is why Webb is almost exclusively an infrared instrument. No telescope on the ground can beat it at that.

Cheers,

JM


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