NASA Webb Telescope Mated and Encapsulated for Ariane 5 Launch Dec. 24 after Comm Glitch Resolved: Photos

NASA Webb Telescope Mated and Encapsulated for Ariane 5 Launch Dec. 24 after Comm Glitch Resolved
On Saturday 11 December, 2021, the James Webb Space Telescope (JWST) folded for flight was placed on top of the Ariane 5 rocket that will launch it to space from Europe’s Spaceport in French Guiana targeted for 24 December 2021. Credit: ESA-M. Pedoussaut

For SpaceUpClose.com & RocketSTEM

CAPE CANAVERAL, FL – The fully fueled NASA James Webb Space Telescope (JWST) has been mated and encapsulated in its nose cone and stands ready for launch to space now targeting Christmas Eve, Dec. 24 on an Arianespace Ariane 5 rocket from Kourou, French Guiana following resolution of last minute communications glitches that delayed liftoff by another 48 hours to begin its groundbreaking science observations peering back to nearly the beginning of time that are sure to rewrite textbooks worldwide.

The Webb observatory is targeted to launch at 7:20 a.m. EST (12:20 GMT / 13:20 CET). Friday, Dec. 24, on an Arianespace Ariane 5 rocket from Europe’s Spaceport in Kourou, French Guiana, on the northeastern coast of South America.

Webb is the largest and most powerful science telescope payload ever launched from Earth. It will operate in a halo orbit at the L2 Lagrange point approx. 1 million miles (1.6 million km) from Earth after liftoff and about a 1-month journey.

It is also the most expensive science instrument ever costing nearly $9.8 Billion – and the successor to the Hubble Space Telescope.

The encapsulation of Webb inside the 5.4 meter wide Ariane 5 payload fairing atop the rocket was completed by technicians and engineers late Friday, Dec. 17.

Those preparations were interrupted when a communications glitch was discovered between the observatory and the launch vehicle system.

If all goes well with the final launch readiness review (LRR) on Tue., Dec. 21, the integrated Ariane 5/JWST stack will roll out to the launch pad on Wed., Dec. 22, in anticipation of liftoff two days later, Friday morning, Dec. 24.

“Late yesterday [Dec. 17], teams at the launch site successfully completed encapsulation of the observatory inside the Ariane 5 rocket that will launch it to space,” the European Space Agency (ESA) reported.

“Webb’s launch final readiness review will be held on Tuesday 21 December and, if successful, roll-out is planned for Wednesday 22 December.”

 

With Webb folded up origami style for flight it was encapsulated inside the nose cone with little clearance which measures 5.4 meters in diameter and 17 meters tall.

James Webb Space Telescope (JWST) folded for flight was encapsulated in the nose cone place on top of the Ariane 5 rocket that will launch it to space from Europe’s Spaceport in French Guiana targeted for 24 December 2021. Credit: ESA-M. Pedoussaut

The go ahead for launch preparations was given after engineers figured out the “finicky” connectivity issue.

“Just in from the Webb launch site: The team has fixed the connection issue and @NASAWebb  is in the midst of its final scheduled aliveness test before launch. We’ll provide an additional update on the status of encapsulation and the launch date tomorrow,” Thomas Zurbuchen, head of NASA’s science mission directorate tweeted Dec. 16.

“It’s an interface issue in the electrical network connecting the observatory and the ground support equipment. Or, to be more precise, it’s a cable located in the launch table which is experiencing intermittent losses of data,” said Daniel Neuenschwander, ESA director of space transportation at a Dec. 16 NASA ESA update briefing about the technical issue and the launch.

“We’re not taking any risks with Webb,” said Thomas Zurbuchen, head of NASA’s science mission directorate. “It’s already risky enough the way it is. We’re absolutely making sure everything works.”

The encapsulation of Webb was completed after technicians hoisted and mated the telescope to the top of the Ariane 5 upper stage.

 

After finishing fueling Webb was transferred on Dec. 7 to the final assembly building at Europe’s Spaceport in French Guiana while stowed inside a special transport container and mobile clean room.

“Webb’s vitals were meticulously monitored throughout the entire process of moving between buildings” NASA reported.

On Saturday 11 December, 2021, the James Webb Space Telescope (JWST) folded for flight was placed on top of the Ariane 5 rocket that will launch it to space from Europe’s Spaceport in French Guiana targeted for 24 December 2021. Credit: ESA-M. Pedoussaut

For mating to Arianne 5 Webb was lifted slowly about 40 meter high and then carefully maneuvered on top of the rocket.  Technicians then bolted the telescopes launch vehicle adapter down to the rocket.

On Saturday 11 December, 2021, the James Webb Space Telescope (JWST) folded for flight was placed on top of the Ariane 5 rocket that will launch it to space from Europe’s Spaceport in French Guiana targeted for 24 December 2021. Credit: ESA-M. Pedoussaut

“This whole process was performed under strict safety and cleanliness regulations, as it was one of the most delicate operations during the entire launch campaign for Webb, reported ESA.

“A ‘shower curtain’ about 12 m high and 8 m in diameter was installed in between two platforms, to create a closed-off space around Webb to avoid any contamination.”

On 11 December, 2021, the James Webb Space Telescope (JWST) folded for flight was placed on top of the Ariane 5 rocket that will launch it to space from Europe’s Spaceport in French Guiana targeted for 24 December 2021. Credit: ESA-M. Pedoussaut

Webbs primary mirror is comprised of 18 segmented gold coated individual mirror segment that measure 6.5 meters in diameter when unfurled.

In space it is protected by a tennis court sized sunshade of 5 layers

Webb is equipped with 4 state-of-the-art science observing instruments.

 

 

NASA is planning extensive prelaunch and launch coverage of the JWST mission.

Details here:

https://www.nasa.gov/mission_pages/webb/main/index.html

https://www.nasa.gov/feature/nasa-invites-public-to-share-excitement-of-webb-space-telescope-launch

Live countdown commentary and launch broadcast coverage coverage will begin at 6 a.m. Friday, Dec. 24, on NASA TV, the NASA app, and the agency’s website. The public can also watch live on FacebookTwitterYouTubeTwitch, and Daily Motion.

NASA will hold a prelaunch media briefing at 2 p.m. on Tuesday, Dec. 21, and a postlaunch news conference approximately 30 minutes after the live launch broadcast ends on Friday, Dec. 24.

The Webb Telescope is a joint international collaborative project between NASA, the European Space Agency (ESA) and the Canadian Space Agency  (CSA).

Webb is designed to look at the first light of the Universe and will be able to peer back in time to when the first stars and first galaxies were forming.  It will also study the history of our universe and the formation of our solar system as well as other solar systems and exoplanets, some of which may be capable of supporting life on planets similar to Earth.

“It will explore every phase of cosmic history – from within our solar system to the most distant observable galaxies in the early universe, and everything in between. Webb will reveal new and unexpected discoveries, and help humanity understand the origins of the universe and our place in it,” says NASA.

The 18-segment gold coated primary mirror of NASA’s James Webb Space Telescope is raised into vertical alignment in the largest clean room at the agency’s Goddard Space Flight Center in Greenbelt, Maryland, on Nov. 2, 2016.The secondary mirror mount booms are folded down into stowed for launch configuration.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com

I observed JWST many times while under construction at NASA Goddard Spaceflight Center in Greenbelt, MD.

This photo shows the science instrument/mirror module in the Goddard cleanroom after installation of the 18 primary mirrors was completed.

The 18-segment gold coated primary mirror of NASA’s James Webb Space Telescope is raised into vertical alignment in the largest clean room at the agency’s Goddard Space Flight Center in Greenbelt, Maryland, on Nov. 2, 2016.The secondary mirror mount booms are folded down into stowed for launch configuration.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com

JWST is the largest, most powerful and most complex space telescope ever built. It will serve as the scientific successor to NASA’s world famous and phenomenally successful Hubble Space Telescope (HST).

It will be launched on an Ariane 5 rocket, folded up like origami inside the nose cone which measures 5.4 meters in diameter and 17 meters tall.

Watch this space for my ongoing reports on JWST mirrors, science, construction and testing.

Watch Ken’s continuing reports about JWST, IXPE, DART, SpaceX Crew and Cargo Dragons, Artemis, SLS, Orion and NASA missions, Lucy Asteroid mission, SpaceX Starlink, Blue Origin and Space Tourism, Commercial Crew and Starliner and Crew Dragon and onsite for live reporting of upcoming and recent SpaceX and ULA launches including Crew 1 & 2 & 3, ISS, Solar Orbiter, Mars 2020 Perseverance and Curiosity rovers, NRO spysats and national security missions and more at the Kennedy Space Center and Cape Canaveral Space Force Station.

Stay tuned here for Ken’s continuing Earth and Planetary science and human spaceflight news: www.kenkremer.com –www.spaceupclose.com – twitter @ken_kremer – email: ken at kenkremer.com

Dr. Kremer is a research scientist and journalist based in the KSC area, active in outreach and interviewed regularly on TV and radio about space topics.
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Ken’s photos are for sale and he is available for lectures and outreach events

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JWST artist concept

 

NASA James Webb Space Telescope (JWST) folded for launch while inside the clean room at Europe’s Spaceport in French Guiana in Nov. 2021. Credit: NASA/Chris Gunn

 

Ken Kremer/Space UpClose reflecting in the golden mirrors of NASA’s James Webb Space Telescope which will peer back 13.5 Billion years to unravel the mysteries of the formation of the early Universe and tell us how our place in the Universe came to be.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com

 

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Ken Kremer

Watch for Ken’s continuing onsite coverage of NASA, SpaceX, ULA, Boeing, Lockheed Martin, Northrop Grumman and more space and mission reports direct from Kennedy Space Center and Cape Canaveral Air Force Station in Florida and Wallops Flight Facility in Virginia. Stay tuned here for Ken's continuing Earth and Planetary science and human spaceflight news. Dr. Kremer is a research scientist and journalist based in the KSC area, active in outreach and interviewed regularly on TV and radio about space topics. Ken’s photos are for sale and he is available for lectures and outreach events.

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