James Webb Space Telescope Conducts Critical Tower Extension, Sun Shield Deployment in Next Few Days

James Webb Space Telescope will still take nearly six months to get fully ready to do its job.

By Edited by Gadgets 360 Newsdesk | Updated: 30 December 2021 12:51 IST

James Webb Space Telescope Conducts Critical Tower Extension, Sun Shield Deployment in Next Few Days

Photo Credit: Twitter/ @NASAWebb

James Webb Space Telescope has successfully completed its Deployable Tower Assembly

Highlights

James Webb Space Telescope was launched on Christmas Day
James Webb Space Telescope can only be unfolded when it's in orbit
James Webb Space Telescope is the largest of its kind

NASA's James Webb Telescope is going through some critical manoeuvre phases which will determine its success as a mission to shed light on the origin of the universe. The powerful space observatory, which was launched into orbit on Christmas Day, is heading for a “make or break” moment when it attempts to unpack its five-layered sun shield. The barrier will provide the space telescope with super cold temperatures for its instruments to work properly. And NASA is providing regular updates via Twitter on these tense moments, which are being followed by millions of enthusiasts around the world.

In a tweet, NASA said the James Webb team has successfully extended the Deployable Tower Assembly (DTA) in order to unfold the sun shield in the next few days. The launch of the space telescope from Earth was only the start of a six-month process to get James Webb into place for its job. The process is lengthy, as James Webb Space Telescope is a big observatory, packed into a tiny space inside the nose cone of the Ariane launcher. What this means is that the telescope could only be unfolded once it was released into orbit.

Moving on up! ⬆️

Our team has just confirmed that we have successfully extended our Deployable Tower Assembly (DTA) upwards, making space for our sunshield deployments in the next few days -- another step completed as we #UnfoldTheUniverse: https://t.co/oJcYs13Ju3 pic.twitter.com/eaaHpC5GxS
— NASA Webb Telescope (@NASAWebb) December 29, 2021

The deployment of DTA creates space between the upper section of the observatory and the spacecraft bus to allow sensitive mirrors and instruments to cool down to necessary temperatures to detect infrared light. This gap will also provide room for the sun shield membranes, each as thin as human hair, to fully unfold.

There's little room for error.

James Webb Space Telescope "is split into a ‘hot side' and ‘cold side' by its sun shield. The sun shield will always be facing the Sun to block out heat and light, as Webb's mirrors need to stay extremely cold to observe faint heat signals in the universe,” NASA explained in another tweet.

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You're hot and you're cold… ????#NASAWebb is split into a “hot side” and “cold side” by its sunshield. The sunshield will always be facing the Sun to block out heat and light, as Webb's mirrors need to stay extremely cold to observe faint heat signals in the universe! pic.twitter.com/GciNPo04nr
— NASA Webb Telescope (@NASAWebb) December 29, 2021

Why the need for this hot and cold separation? Temperatures on the hot side of James Webb will reach as high as 85 degrees Celsius and on the cold side it will be about -233 degrees Celsius. If you are intrigued by such a huge temperature difference, NASA has set up a live tracker. “Note that temperatures will continue to change as Webb unfolds and then cools down to operating temperatures over the next months,” the agency added.

NASA said that the James Webb team has successfully completed two mid-course corrections that will significantly enhance the life of the observatory.

Due to the precision of our launch and our first two mid-course corrections, our team has determined that Webb should have enough fuel to allow support of science operations for significantly more than a 10-year science lifetime! ???? https://t.co/1e3sWlynPI pic.twitter.com/yb4Oe6dnwj
— NASA Webb Telescope (@NASAWebb) December 29, 2021

James Webb, meanwhile, has automatically executed the solar array deployment after rocket separation. “Because Webb was already in the correct attitude, the array deployed about 1.5 min after separation, or 29 min. after launch,” the agency added.

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Because Webb was already in the correct attitude, the array deployed about 1.5 min after separation, or 29 min. after launch.

The rest of our deployments are human-controlled, so deployment timing or order may change! Explore what's next: https://t.co/NXe96U821e
— NASA Webb Telescope (@NASAWebb) December 29, 2021

The James Webb Space Telescope is a joint project of the NASA, European Space Agency, and the Canadian Space Agency.

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