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James Webb Space Telescope (JWST)


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Posted (edited)

 

I like nice space pics. I expecting some beauties from the latest space telescope.

 

Soon we should see some amazing pics come through. 

 

Here are a few fun facts:

Launch date: 25 December 2021

Cost: 10 billion USD (2016)

Dimensions: 20.197 m × 14.162 m (66.26 ft × 46.46 ft)

Sunshield Bandwidth: S-band up: 16 kbit/s; S-band down: 40 kbit/s; Ka-band down: up to 28 Mbit/s

Power: 2 kW

Launch mass: 6,161.4 kg (13,584 lb)

 

Here is one of the first images. They are still focusing the lenses.

 

Please share your favourite images here.

 

Old (Downunder) Tone

 

 

 

JWST-1.png

JWST-2.png

Edited by ➕👇 ꓤꓱꓷꓠꓵ🎵Tone
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 Is this really a 10 BILLION DOLLAR pic of a star?

 

1684110998_ScreenShot2022-03-02at11_58_01AM.png.42b186ad93064e53d5dd0247b25ea5ea.png🤔

 

I sure hope it looks a lot better in focus,

cuz I have pics like this in my Animations' folder.

 

Mine even twinkles, and I got it for FREE.  

1651990852_Startwinkling.gif.d0b0344cbfb8a9d01dc10bbab3542d85.gif106482329_12__!@!__unknown.gif.bf9b7ccff0b5fd20b093cac9aab3b96d.gif

 

Plus, I have an astigmatism, so this is how I already see the stars:

 

1684110998_ScreenShot2022-03-02at11_58_01AM.png.42b186ad93064e53d5dd0247b25ea5ea.png1684110998_ScreenShot2022-03-02at11_58_01AM.png.42b186ad93064e53d5dd0247b25ea5ea.png1684110998_ScreenShot2022-03-02at11_58_01AM.png.42b186ad93064e53d5dd0247b25ea5ea.png1684110998_ScreenShot2022-03-02at11_58_01AM.png.42b186ad93064e53d5dd0247b25ea5ea.png

1684110998_ScreenShot2022-03-02at11_58_01AM.png.42b186ad93064e53d5dd0247b25ea5ea.png1684110998_ScreenShot2022-03-02at11_58_01AM.png.42b186ad93064e53d5dd0247b25ea5ea.png1684110998_ScreenShot2022-03-02at11_58_01AM.png.42b186ad93064e53d5dd0247b25ea5ea.png1684110998_ScreenShot2022-03-02at11_58_01AM.png.42b186ad93064e53d5dd0247b25ea5ea.png1684110998_ScreenShot2022-03-02at11_58_01AM.png.42b186ad93064e53d5dd0247b25ea5ea.png

1684110998_ScreenShot2022-03-02at11_58_01AM.png.42b186ad93064e53d5dd0247b25ea5ea.png1684110998_ScreenShot2022-03-02at11_58_01AM.png.42b186ad93064e53d5dd0247b25ea5ea.png1684110998_ScreenShot2022-03-02at11_58_01AM.png.42b186ad93064e53d5dd0247b25ea5ea.png555789864_Yeshappysmile.gif.c44a3e3a5aa6bd9499b488f2dcf35949.gif

                                                                                                     1326399_Skygazing.gif.c78df4b13089ca4648df2fd47f0c4500.gif

 

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Posted (edited)

Interesting article. Probably nothing you don't already know. But it does have some nice links to animations and existing Hubble images.

EG. Below: Pillars of Creation in the Eagle Nebula

https://www.space.com/james-webb-space-telescope-massive-star-radiation-probe

Old (Downunder) Tone
 

Hubble.png

Edited by ➕👇 ꓤꓱꓷꓠꓵ🎵Tone
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  • 2 weeks later...

While we wait.... (from Hubble)

 

"Deep within the Andromeda constellation, some 320 million light-years away, two galaxies are consumed by a gravitationally bound dance, and the Hubble Space Telescope has just photographed the action in extraordinary three-dimensional detail..."

 

https://www.space.com/hubble-telescope-photo-galaxy-tidal-interactions

 

Hubble-1.png

Hubble-2.png

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Another interesting article:

 

"Webb will detect, for the first time in human history, galaxy populations forming shortly after the big bang, and theory is paving the way for the search," says Yung. "In turn, Webb's observations will refine our understanding of galaxies and the history of our universe."

 

Encore, encore — Hubble changed the way we see the universe, giving us a glimpse not only into the extremely distant universe but also the unimaginably old. But when the James Webb Space Telescope takes a look at Hubble's crowning achievement, we're going to see even further into the abyss — into the same conditions that allowed every galaxy, every star, every planet, and being, to exist.

 

https://interestingengineering.com/james-webb-hubble-ultra-deep-field

 

(If this is the 'before' shot, I cannot wait to see the 'after'!)

Time-1.png

Before.png

After.png

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Posted (edited)
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https://www.nasa.gov/press-release/nasa-s-webb-reaches-alignment-milestone-optics-working-successfully

 

spacer.png

Quote

While the purpose of this image was to focus on the bright star at the center for alignment evaluation, Webb's optics and NIRCam are so sensitive that the galaxies and stars seen in the background show up. At this stage of Webb’s mirror alignment, known as “fine phasing,” each of the primary mirror segments have been adjusted to produce one unified image of the same star using only the NIRCam instrument. This image of the star, which is called 2MASS J17554042+6551277, uses a red filter to optimize visual contrast.

Credits: NASA/STScI

Sounds like it will be a few months before the telescope is fully functional, but the pic above is already SPECTACULAR!!!

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Posted (edited)

17 March 2022 / Jamie Priest

 

“Better than our most optimistic prediction” – first images from James Webb exceed all expectations.

 

Images of a very “boring” star are making waves across the astronomical world today – they are the first sent back from NASA’s James Webb telescope, and they have exceeded all hopes and expectations.

Having completed the self-assembly of its 18-segmented main mirror, the telescope has now taken exceptional images of an unexceptional star as a test of its capabilities. The star, known as HD84406, is 100 times fainter than what can be seen with the human eye. The star itself is of little interest, lovely though its image is – instead, astronomers are captivated by the spray of tiny dots scattered across the background. Each is a distant galaxy, and this is the first time we’ve ever been able to capture them...

"The telescope’s performance so far is everything that we dared to hope,” says Jane Rigby, Webb operations project scientist at Goddard. “The engineering images that we saw today are as sharp and as crisp as the images that Hubble can take, but are at a wavelength of light that is totally invisible to Hubble. So this is making the invisible universe snapping into very, very sharp focus.”

More than just confirming that the telescope is operating smoothly, these first images are also a clear demonstration of the James Webb’s capabilities."

First photos from James Webb telescope better than expected.
https://cosmosmagazine.com/space/exploration/first-photos-james-webb-telescope/?amp=1

Old (Downunder) Tone
 

JWST-0001.png

Edited by ➕👇 ꓤꓱꓷꓠꓵ🎵Tone
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Webb Space Telescope Begins Multi-Instrument Alignment

By NASA’S GODDARD SPACE FLIGHT CENTER MARCH 21, 2022

After meeting the major milestone of aligning the telescope to NIRCam, the Webb team is starting to extend the telescope alignment to the guider (the Fine Guidance Sensor, or FGS) and the other three science instruments. This six-week-long process is called multi-instrument multi-field (MIMF) alignment.

When a ground-based telescope switches between cameras, sometimes the instrument is physically taken off the telescope, and a new one is installed during the daytime when the telescope is not in use. If the other instrument is already on the telescope, mechanisms are in place to move part of the telescope’s optics (known as a pick-off mirror) into the field of view...

https://scitechdaily.com/webb-space-telescope-begins-multi-instrument-alignment/

[Looks like we wait another 6 weeks]

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Posted (edited)

Meanwhile, back at the Hubble...

"This cosmic portrait — captured with the NASA/ESA Hubble Space Telescope’s Wide Field Camera 3 — shows a stunning view of the spiral galaxy NGC 4571, which lies approximately 60 million light-years from Earth in the constellation Coma Berenices. This constellation — whose name translates as Bernice’s Hair — was named after an Egyptian queen who lived more than 2200 years ago..."


https://scitechdaily.com/hubble-spies-a-stunning-spiral-in-constellation-coma-berenices/



Old (Downunder) Tone
 

NGC-4571.png

Edited by ➕👇 ꓤꓱꓷꓠꓵ🎵Tone
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  • 2 weeks later...
Posted (edited)

More from Hubble:

Hubble Spots Farthest Star Ever Seen Thanks to Lucky Cosmic Alignment – “We Almost Didn’t Believe it!"
By SPACE TELESCOPE SCIENCE INSTITUTE
MARCH 30, 2022

The star nicknamed Earendel (indicated with arrow) is positioned along a ripple in spacetime that gives it extreme magnification, allowing it to emerge into view from its host galaxy, which appears as a red smear across the sky. The whole scene is viewed through the distorted lens created by a massive galaxy cluster in the intervening space, which allows the galaxy’s features to be seen, but also warps their appearance—an effect astronomers call gravitational lensing. The red dots on either side of Earendel are one star cluster that is mirrored on either side of the ripple, a result of the gravitational lensing distortion. The entire galaxy, called the Sunrise Arc, appears three times, and knots along its length are more mirrored star clusters. Earendel’s unique position right along the line of most extreme magnification allows it to be detected, even though it is not a cluster.

https://scitechdaily.com/hubble-spots-farthest-star-ever-seen-thanks-to-lucky-cosmic-alignment-we-almost-didnt-believe-it/

Old (Downunder) Tone
 

Earendel.png

Edited by ➕👇 ꓤꓱꓷꓠꓵ🎵Tone
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Posted (edited)

I should add that the above article on Earendel did mention the JWST:

Confirmation with Webb
Astronomers expect that Earendel will remain highly magnified for years to come. It will be observed by NASA’s James Webb Space Telescope. Webb’s high sensitivity to infrared light is needed to learn more about Earendel, because its light is stretched (redshifted) to longer infrared wavelengths due to the universe’s expansion.

“With Webb we expect to confirm Earendel is indeed a star, as well as measure its brightness and temperature,” Coe said. These details will narrow down its type and stage in the stellar lifecycle. “We also expect to find the Sunrise Arc galaxy is lacking in heavy elements that form in subsequent generations of stars. This would suggest Earendel is a rare, massive metal-poor star,” Coe said.

Earendel’s composition will be of great interest for astronomers, because it formed before the universe was filled with the heavy elements produced by successive generations of massive stars. If follow-up studies find that Earendel is only made up of primordial hydrogen and helium, it would be the first evidence for the legendary Population III stars, which are hypothesized to be the very first stars born after the big bang. While the probability is small, Welch admits it is enticing all the same.

“With Webb, we may see stars even farther than Earendel, which would be incredibly exciting,” Welch said. “We’ll go as far back as we can. I would love to see Webb break Earendel’s distance record.”

Old (Downunder) Tone
 

Earendel-2.png

Edited by ➕👇 ꓤꓱꓷꓠꓵ🎵Tone
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Image details:

This detailed view highlights the star Earendel’s position along a ripple in space-time (dotted line) that magnifies it and makes it possible for the star to be detected over such a great distance—nearly 13 billion light-years. Also indicated is a cluster of stars that is mirrored on either side of the line of magnification. The distortion and magnification are created by the mass of a huge galaxy cluster located in between Hubble and Earendel. The mass of the galaxy cluster is so great that it warps the fabric of space, and looking through that space is like looking through a magnifying glass—along the edge of the glass or lens, the appearance of things on the other side are warped as well as magnified.

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Posted (edited)

Abell 370
An artice touching on Gravitational lenses. The light arc in the pic below (called The Dragon.) is one system out of view behind another system, but gravity has bent the light beams into view.
(Hubble pic below)

From the article:

The most prominent of these magnified images is the thickest bright arc above and to the left of the center of the picture. Called "the Dragon," this arc consists of two images of the same distant galaxy at its head and tail. Overlapping images of several other distant galaxies comprise the arc of the dragon's body.

These gravitationally magnified images are useful to astronomers, because the magnification reveals more detail of the distant lensed object than would otherwise be seen. In this case the lensed galaxy's population of stars can be examined in detail.


Point 4 in this link entitled Abell 370:

https://phys.org/news/2021-12-telescope-pictures-universe.html?utm_source=TrendMD&utm_medium=cpc&utm_campaign=Phys.org_TrendMD_1


Old (Downunder) Tone
 

Abell370.png

Edited by ➕👇 ꓤꓱꓷꓠꓵ🎵Tone
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