James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

EnlaleHap · 2017-08-23 10:13:38

If the Hubble Telescope got its mission extended to sometime after the James Webb telescope is launched and operational, would it be possible to point the two telescopes to the same spot in space and get an even clearer picture than the telescopes could get by themselves? Like the two Kecks do, but space based. Im a novice so please be kind. Thanks

SpaceNut · 2017-08-23 16:12:01

Delays are not cost free and this telescope has already been a money pit exceeding even what we would typically see as its beyond cutting edge and was pushed to be more by design.

Mars_B4_Moon · 2021-09-11 08:29:34

Finally?

NASA Readies James Webb Space Telescope for December Launch
https://www.nasa.gov/press-release/nasa … ber-launch

James Webb: Hubble successor given mid-December launch date
https://www.bbc.co.uk/news/science-environment-58498676

Last edited by Mars_B4_Moon (2021-09-11 08:31:32)

SpaceNut · 2021-09-11 08:41:55

A much touted replacement that can not do what Hubble can do is a new telescope with other capability.

Mars_B4_Moon · 2021-10-03 13:08:13

After two decades, the Webb telescope is finished and on the way to its launch site
https://spaceflightnow.com/2021/09/30/w … ch-guiana/

SpaceNut · 2021-10-03 14:11:15

With billions in cost over runs to a contractor that was ill capable of building it from the start...

Mars_B4_Moon · 2021-10-19 11:40:20

Cost over-runs were crazy, nothing like this telescope had ever been built before and it originally had a $500 million budget

NASA's $10 BILLION James Webb Space Telescope is unpacked for launch

https://en.mogaznews.com/Technology/184 … aunch.html

Last edited by Mars_B4_Moon (2021-10-19 11:41:37)

Mars_B4_Moon · 2021-11-02 04:39:37

JWST launch preparations on track

https://spacenews.com/jwst-launch-prepa … -on-track/

Mars_B4_Moon · 2021-11-27 15:23:50

Testing confirms Webb Telescope on track for targeted Dec 22 lLaunch

https://www.spacedaily.com/reports/Test … h_999.html

Mars_B4_Moon · 2021-11-29 03:11:13

It looks like a 4 day slip from the Dec. 18 launch But after a launch date initially planned for 2007 ....14 years later ...finally in year 2021 ...what's another 4 days?

Mars_B4_Moon · 2021-12-07 07:53:35

NASA’s James Webb Space Telescope Fully Fueled for Launch – James Webb Space Telescope

https://blogs.nasa.gov/webb/2021/12/06/ … or-launch/

SpaceNut · 2021-12-07 20:21:52

Yup another days delay is nothing if it gets to orbit safely and works as touted....other wise we could have had many Hubble's to replace this over spent telescope

Mars_B4_Moon · 2021-12-12 16:11:52

It began as an idea on a drawing board in 1996, planned originally for 2007 and 25 years later NASA has a count down clock to its final launch. As expensive as JWST is it would still not rank as the most expensive thing of all time, I believe maybe some tunnel or pipe near Boston or NewYork maybe the 'Big Dig' was more expensive, the Marina Bay Sands Resort in Saingapore is more or less then same price, the Apollo program that put US astronauts on the Moon was more expensive, there is a hostpial in Stockholm Stockholm that cost the same billions, there is a very expensive hotel/resort white elephant thing in Dubai or UAE or some place, I think that sinking Airport in Japan is also costing billions and the ISS itself is more expensive.
There is also a long process for the JWST, a long wait for it to enter into a halo orbit at the L2 Lagrange point, the James Webb Space Telescope if it succeeds on its journey should revolutionze space science discoveries, it will take detailed atmospheric characterization of potentially habitable exoplanets and have many new findings in astronomy.

Livestream?

https://jwst.nasa.gov/content/webbLaunch/countdown.html

Last edited by Mars_B4_Moon (2021-12-12 16:20:10)

Mars_B4_Moon · 2021-12-25 07:17:34

James Webb Space Telescope Is On Its Way
https://twitter.com/NASA/status/1474717083883778057
We have LIFTOFF of the NASAWebb Space Telescope!

Nasa launches most powerful space telescope yet on Christmas Day
https://metro.co.uk/2021/12/25/nasa-lau … -15823519/
It launched from Kourou spaceport in French Guiana on an Ariane 5 rocket.
As people around the world watched on a livestream, Nasa spokesman Rob Navias said: ‘Lift-off, from a tropical rainforest to the edge of time itself, James Webb begins a voyage back to the birth of the universe.’
The telescope follows in the footsteps of the Hubble telescope as the next great space observatory.
Nasa said it marked ‘the beginning of a new, exciting decade of science’ and would ‘change our understanding of space as we know it’.

Webb Space Telescope lifts off to reveal early galaxies, exoplanets
http://www.collectspace.com/news/news-1 … aunch.html
December 25, 2021
— The world's largest and most powerful space telescope has made it safely off the planet, but it still has a complex deployment and a million-mile journey before it can start revealing the universe like never before.
The James Webb Space Telescope (JWST), named after the Apollo-era NASA administrator who championed space science, is an infrared observatory that will be used to image the earliest galaxies and to discern the atmospheric properties of exoplanets. It is intended as the scientific successor for the Hubble and Spitzer space telescopes, which remain in operation.

I believe Canada also contributed to the budget and built the GuidanceSensor which will orient and stabilize its operation.

Here are some other previous studies and photos from other space telescope ESA's Herschel and NASA's Spitzer, https://apod.nasa.gov/apod/ap210417.html , https://apod.nasa.gov/apod/ap110902.html , https://apod.nasa.gov/apod/ap200213.html
https://apod.nasa.gov/apod/ap210415.html , https://apod.nasa.gov/apod/ap190611.html , https://apod.nasa.gov/apod/ap110819.html
I find this set of photos amazing as it flashes back and forth between the visible and infrared of the North America Nebula
https://apod.nasa.gov/apod/ap190728.html
JWST will work in the I.R 0.6–28.5 μm range

James Webb Timeline
https://planet4589.org/space/misc/webb/time.html
L + 180d

'Begin Cycle 1 GO observations'

Last edited by Mars_B4_Moon (2021-12-25 18:19:17)

kbd512 · 2021-12-25 17:22:47

I finished watching the launch. Congratulations to Ariane Space, ESA, NASA, and the myriad of other contributors on a successful launch of the James Webb Space Telescope- the most sophisticated "all-seeing eye in the heavens" launched to date. As challenging as it was to arrive at this point, the real work will begin over the coming weeks and months as this not-so-little technological marvel is maneuvered into position at L2, its heat shield is deployed to begin chill-down of the telescope to near absolute zero, its massive reflector array is unfolded to focus IR energy on the primary sensor, and the scientific instruments and control systems are calibrated prior to initiating operations.

I wish the world's astronomers and scientists good fortune and happy hunting in their quest to peer back in time to near the dawn of the universe, as well as to better characterize potentially habitable planets orbiting nearby stars, so that one day we may travel to and colonize other worlds outside of our solar system. The findings of this mission will be pivotal to our goals of better understanding the nature of the early universe and locating a "second Earth". Hubble has shown us what it can, and a truly stunning instrument of discovery it was, but now to look back further we require this next generation technological advancement.

Mars_B4_Moon · 2021-12-26 11:03:59

Deployed its solar panels, long journey ahead to L2, all nominal.

High Gain Antenna deployed

NASA's Webb is expected to officially enter service in the Summer

The First Mid-Course Correction Burn
https://blogs.nasa.gov/webb/2021/12/25/ … tion-burn/
'Webb’s first mid-course correction burn began. It lasted 65 minutes and is now complete. This burn is one of two milestones that are time critical — the first was the solar array deployment, which happened shortly after launch.'

JWST launch marks only the start of a risky deployment process

https://spacenews.com/jwst-launch-marks … t-process/

Deployment of the telescope mirror begins 10 days after liftoff when a tripod holding the small secondary mirror extends into place. Two wings, each holding three of the 18 segments of the primary mirror, then lock into place, completing deployment of the telescope 13 days after launch.
Months of work lie ahead after those deployments to align the telescope mirrors and commission the instruments as they cool to their operating temperatures, a process that won’t be completed until six months after launch. A maneuver 29 days after launch will place JWST into its final halo orbit around the Earth-sun L-2 Lagrange point, 1.5 million kilometers from Earth.
Those initial deployments, though, are among the most critical, and the riskiest. At a November briefing, Mike Menzel, JWST lead mission systems engineer at NASA’s Goddard Space Flight Center, said there are 344 single-point failures in the spacecraft, 80% of which are associated with deployment mechanisms. “When you have a release mechanism, it’s hard to put full redundancy into that,” he said.
The sunshield, for example, includes 140 release mechanisms, 70 hinge assemblies, eight deployment motors, about 400 pulleys and 90 cables that are a total of 400 meters long, said Krystal Puga, JWST spacecraft systems engineer at Northrop Grumman, during that November briefing.
“I think of the sunshield deployment similar to a Rube Goldberg machine, in that it uses a series of reactions that work in succession, triggering one event after the other until the entire sunshield is fully deployed,” she said, but added she was confident it would work properly.
“We performed multiple deployment testing over several years on both small and full-sized models,” she said. “This gives us the confidence that Webb is going to deploy successfully.”

Twitter page
https://twitter.com/NASAWebb/status/1475138567454265352
'Our team just deployed the gimbaled antenna assembly, which includes Webb’s high-data-rate dish antenna. This antenna will be used to send at least 28.6 Gbytes of data down from the observatory, twice a day'

Where is Webb
https://jwst.nasa.gov/content/webbLaunc … sWebb.html

Last edited by Mars_B4_Moon (2021-12-26 13:33:46)

Mars_B4_Moon · 2021-12-26 13:36:53

In Photos: See The Dramatic Final Images Of NASA’s $10 Billion Webb Space Telescope After Its Christmas Day Launch
https://www.forbes.com/sites/jamiecarte … ay-launch/

'The James Webb Space Telescope honours NASA's second administrator, James E. Webb, who headed the agency from February 1961 to October 1968, at the time of the Apollo programme. The James Webb Space Telescope (JWST) was formerly known as the Next Generation Space Telescope (NGST).'
https://sci.esa.int/web/jwst/-/45759-fact-sheet

Instruments
JWST will carry four science instruments:
NIRCam: A wide field (2.2' × 4.4') near-IR camera covering wavelengths 0.6 - 5 µm;
NIRSpec: A wide field (3.5' × 3.5') multi-object near-IR spectrograph covering wavelengths 0.6 μm - 5 µm at spectral resolutions of R~100, R~1000 and R~2700;
MIRI: A combined mid-IR camera (1.4' × 1.9') and spectrograph (R~3000) covering wavelengths 5 - 28 µm;
FGS/NIRISS: A combined observatory Fine Guidance System and near-infrared imager and slitless spectrograph covering wavelengths 0.6 μm - 5 μm with a 2.2' × 2.2' field of view.

Mars_B4_Moon · 2021-12-28 14:28:39

'Not only did we just complete our second burn, but #NASAWebb also passed the altitude of the Moon as it keeps cruising on to the second Lagrange point'

https://twitter.com/NASAWebb/status/1475637156995551235

SpaceNut · 2021-12-28 19:03:28

Space telescope faces major test as sunshade deployment begins

The five-layer sunshade, the size of a tennis court, is required to block out the sun and cool Webb's optics and instruments to within 50 degrees of absolute zero, or minus-370 Fahrenheit. Only then will the telescope be able to register the faint infrared light from the first generation of stars and galaxies.
Assuming no problems with the pallets, a motorized tower will be extended Wednesday, raising Web's mirror and instrument assembly 48 inches away from the spacecraft's support section, or bus. That will isolate the optics from the heat generated by electronic gear positioned below the sunshade on the "hot side" of the spacecraft.

I am the James Webb Space Telescope and I have so much to do

ebebe16c93c1b294a807da4e450bfa9b

Mars_B4_Moon · 2021-12-29 09:24:36

There is also a blog with updates

https://blogs.nasa.gov/webb/2021/12/28/ … -deployed/

SpaceNut · 2021-12-29 09:57:23

Thanks for the main blog site for the JWST. I also found that they have many more by going to the https://blogs.nasa.gov/ address and now have lots to explore.

Mars_B4_Moon · 2021-12-30 08:35:29

'James Webb Space Telescope has enough fuel for way more than 10 years of science'

https://www.space.com/james-webb-space- … l-lifetime

SpaceNut · 2021-12-30 11:41:30

But can it survive those extra years and still be productive with the new technologies it was built with. Is there enough redundancy to be able to overcome items becoming not operational as Hubble has done....

Mars_B4_Moon · 2022-01-01 12:05:55

All continues to go well and it seems that 95% of the sunshiled is already deployed

We successfully deployed #NASAWebb’s port sunshield mid-boom, which pulls out our 5 sunshield layers. While scheduled for earlier today, our team paused to confirm the sunshield cover had fully rolled up
https://twitter.com/NASAWebb/status/1477074540081692680

NASA press release: https://www.nasa.gov/press-release/upda … eployments

says NASA TV will host live broadcast coverage to mark the following milestones, with specific times and dates updated as they approach:

Sunshield tensioning: The full deployment of the sunshield, the most challenging element for Webb, will mark a critical milestone for the mission.

JWST blog quote https://blogs.nasa.gov/webb/2022/01/01/ … -tomorrow/

"Work on the deployment of Webb’s sunshield mid-booms went late into the night yesterday. Webb mission management decided this morning to pause deployment activities for today and allow the team to rest and prepare to begin Webb’s sunshield tensioning tomorrow, Sunday, Jan. 2. That deployment is still expected to take place over at least two days.

'The deployment of the 5 telescoping segments of the mid-boom began around 1:30pm ET and reached full deployment at 4:49pm.
Webb's deployment steps are all human-controlled, so the schedule can change. The team plans to deploy the starboard mid-boom tonight.'
https://twitter.com/NASAWebb/status/1477074543395094535

tahanson43206 · 2022-01-01 17:30:00

This is a follow up to #99 by Mars_B4_Moon

https://www.yahoo.com/news/james-webb-s … 54255.html

Julia Musto
Sat, January 1, 2022, 3:31 PM
The James Webb Space Telescope (JWST) successfully unfurled its sunshield on Friday, in another milestone for the groundbreaking project.
The $10 billion observatory now resembles its full, kite-shaped form in space, following the extension of Webb's second sunshield mid-boom arm.
NASA'S JAMES WEBB SPACE TELESCOPE LAUNCHES DEEP INTO SPACE TO SEE 'DISTANT WORLDS' AND BACK IN TIME
The intricate process was completed in less than four hours, with each of the 107 membrane release devices associated with the sunshield deployment released.
The telescope has 178 of the "non-explosive actuators" in total and 107 were used to keep the sunshield safe and folded before deployment.
The motor-driven mid-booms pulled the folded membranes of the sunshield, extending it to its full 47-foot width.
The deployments took longer than anticipated, NASA said, due to the operations team moving forward with caution.
"Today is an example of why we continue to say that we don’t think our deployment schedule might change, but that we expect it to change," Keith Parrish, Webb observatory manager at NASA’s Goddard Space Flight Center, said in a statement. "The team did what we had rehearsed for this kind of situation – stop, assess, and move forward methodically with a plan. We still have a long way to go with this whole deployment process."
Now, the two mid-booms are locked and will hold the sunshield membranes as the Webb team turns to the final stage of deployment.
NASA'S JAMES WEBB SPACE TELESCOPE WILL LAUNCH A MILLION MILES TO UNWRAP AND EXPLORE THE DISTANT PAST
Work on the deployment of the sunshield mid-booms stretched late into the evening and Webb mission management decided to pause deployment activities for Saturday.
Webb's sunshield tensioning will begin on Sunday and take place over at least two days.
The team will separate and individually tension each of the five sunshield layers, stretching them into their final shape.
This act will create space between the membranes to allow heat to radiate out.
"Webb’s engineers will begin with the bottom layer – the largest and flattest layer, which is closest to the sun and will reach the highest temperatures. They will proceed sequentially to the fifth and smallest layer, closest to the primary mirror. Tensioning the layers involves sending commands to activate several motors to reel in a total of 90 cables through numerous pulleys and cable management devices," the agency explained. "Sunshield tensioning will take at least two days but may take longer, due to the complexity of the process and the flexibility built into the timeline."
After tensioning, the secondary mirror will be deployed and locking Webb's mirrors into their proper positions will bring its deployment phase to a close.
The JWST launched on Christmas and will "explore every phase of cosmic history,"

The procedure followed for James Webb is a precursor for the procedure that will be needed to keep cryogenic liquids secure during a flight to Mars, or any other Solar System destination.

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#76 2017-08-23 10:13:38

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#77 2017-08-23 16:12:01

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#78 2021-09-11 08:29:34

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#79 2021-09-11 08:41:55

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#80 2021-10-03 13:08:13

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#81 2021-10-03 14:11:15

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#82 2021-10-19 11:40:20

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#83 2021-11-02 04:39:37

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#84 2021-11-27 15:23:50

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#85 2021-11-29 03:11:13

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#86 2021-12-07 07:53:35

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#87 2021-12-07 20:21:52

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#88 2021-12-12 16:11:52

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#89 2021-12-25 07:17:34

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#90 2021-12-25 17:22:47

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#91 2021-12-26 11:03:59

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#92 2021-12-26 13:36:53

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#93 2021-12-28 14:28:39

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#94 2021-12-28 19:03:28

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#95 2021-12-29 09:24:36

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#96 2021-12-29 09:57:23

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#97 2021-12-30 08:35:29

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#98 2021-12-30 11:41:30

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#99 2022-01-01 12:05:55

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

#100 2022-01-01 17:30:00

Re: James Webb Space Telescope (JWST) - 6.5m mirror, L2 orbit

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