Author Topic: Anyone else excited/nervous about the upcoming James Webb Telescope launch?  (Read 32829 times)

rcjordan

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Re: Anyone else excited/nervous about the upcoming James Webb Telescope launch?
« Reply #30 on: February 11, 2022, 11:35:36 PM »
Webb Space Telescope Captures Selfie as It Aligns Its Gold Mirrors

https://gizmodo.com/webb-space-telescope-selfie-1848523892

rcjordan

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Re: Anyone else excited/nervous about the upcoming James Webb Telescope launch?
« Reply #31 on: February 13, 2022, 03:08:22 PM »
"The process is going well, according to NASA.

This initial search covered an area about the size of the full moon because the segment dots could potentially have been that spread out on the sky," Marshall Perrin, the deputy telescope scientist for Webb and an astronomer at the Space Telescope Science Institute, said in the same statement. "Taking so much data right on the first day required all of Webb's science operations and data processing systems here on Earth working smoothly with the observatory in space right from the start. And we found light from all 18 segments very near the center early in that search! This is a great starting point for mirror alignment."

rcjordan

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Re: Anyone else excited/nervous about the upcoming James Webb Telescope launch?
« Reply #32 on: February 17, 2022, 11:56:40 PM »
James Webb Space Telescope has locked onto guide star in crucial milestone

littleman

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Re: Anyone else excited/nervous about the upcoming James Webb Telescope launch?
« Reply #33 on: February 26, 2022, 12:40:49 AM »
https://arstechnica.com/science/2022/02/webb-telescope-reaches-major-milestone-all-its-light-is-in-one-place/

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Webb Telescope reaches major milestone: All its light is in one place

Today, NASA shared an image indicating that it had successfully completed the image alignment stage of commissioning the Webb Space telescope. The Webb's primary mirror is composed of 18 individual segments and, as of today's update, all of those segments are aligned so that a single star shows up as a single object. While there are still several more focusing steps required, the path to commissioning the telescope keeps getting shorter.

rcjordan

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Re: Anyone else excited/nervous about the upcoming James Webb Telescope launch?
« Reply #34 on: February 28, 2022, 12:39:08 PM »
Webb continues on its path to becoming a focused observatory. The team has successfully worked through the second and third out of seven total phases of mirror alignment. With the completion of these phases, called Segment Alignment and Image Stacking, the team will now begin making smaller adjustments to the positions of Webb's mirrors.

After moving what were 18 scattered dots of starlight into Webb's signature hexagonal formation, the team refined each mirror segment's image by making minor adjustments, while also changing the alignment of Webb's secondary mirror. The completion of this process, known as Segment Alignment, was a key step prior to overlapping the light from all the mirrors so that they can work in unison.

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Even though the segments are properly aligned, each of the mirror segments are still acting as 18 small telescopes instead of one big one, as is the final intent. NASA says that these segments now need to be lined up to each other with an accuracy smaller than a the wavelength of light.

The next step, phase four of seven, is known as Coarse Phasing, where the NIRCam will be used to capture light spectra from 20 separate pairings of the mirror segments.
« Last Edit: February 28, 2022, 08:03:47 PM by rcjordan »

littleman

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NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully

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On March 11, the Webb team completed the stage of alignment known as “fine phasing.” At this key stage in the commissioning of Webb’s Optical Telescope Element, every optical parameter that has been checked and tested is performing at, or above, expectations. The team also found no critical issues and no measurable contamination or blockages to Webb’s optical path. The observatory is able to successfully gather light from distant objects and deliver it to its instruments without issue.

Although there are months to go before Webb ultimately delivers its new view of the cosmos, achieving this milestone means the team is confident that Webb’s first-of-its-kind optical system is working as well as possible.

“More than 20 years ago, the Webb team set out to build the most powerful telescope that anyone has ever put in space and came up with an audacious optical design to meet demanding science goals,” said Thomas Zurbuchen, associate administrator for NASA’s Science Mission Directorate in Washington. “Today we can say that design is going to deliver.”

rcjordan

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NASA released a statement explaining how JWST is performing even better than expected. "Every optical parameter that has been checked and tested is performing at, or above, expectations. The team also found no critical issues and no measurable contamination or blockages to Webb's optical path. The observatory is able to successfully gather light from distant objects and deliver it to its instruments without issue."

NASA's James Webb Space Telescope mirror surpasses expectations as alignment continues
https://www.teslarati.com/nasa-webb-telescope-jwst-mirror-alignment-progress/

ergophobe

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“Better than our most optimistic prediction” – first images from James Webb exceed all expectations
https://cosmosmagazine.com/space/james-webb-telescope-first-images

Chunkford

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https://bigthink.com/starts-with-a-bang/james-webb-spikes/
I learnt something new today, being able to tell by the spikes which which telescope was used.

Every article I read I'm always awestruck at the the insane level the engineers went to get this telescope to where it is now.
"If my answers frighten you then you should cease asking scary questions"

rcjordan

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Three of James Webb's four instruments are now aligned
https://www.digitaltrends.com/news/james-webb-multi-instrument-alignment/

rcjordan

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Final James Webb Space Telescope instrument reaches super-cold operating temperature - Space.com

rcjordan

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Webb’s mirror alignment is done, now it’s on to the instruments | Ars Technica
https://arstechnica.com/science/2022/04/webbs-mirror-alignment-is-done-now-its-on-to-the-instruments/

rcjordan

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NASA James Webb Target Acquired: A Super-Earth Covered in Lava Oceans - CNET
https://www.cnet.com/science/space/nasa-james-webb-target-acquired-a-super-earth-covered-in-lava-oceans/

rcjordan

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James Webb Space Telescope will release its 1st science-quality images July 12
https://www.space.com/james-webb-space-telescope-first-images-july-12

rcjordan

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