[W: 329] The James Webb Space Telescope Photo Album Thread

[HangLow]

Webb Image Release- Webb Space Telescope GSFC/NASA

The Latest NASA Released Webb Image is featured on this page. The James Webb Space Telescope's revolutionary technology will study every phase of cosmic history—from within our solar system to the most distant observable galaxies in the early universe. Webb’s infrared telescope will explore a...

www.jwst.nasa.gov

Webb at Europe's Spaceport in French Guiana

Launch and launch preparations

www.flickr.com

 

[HangLow]

Why The Webb Telescope’s ‘First Light’ Images Will Be Blurry—
And The Naked-Eye Galaxy That NASA Will Use To Fix Them

Why The Webb Telescope’s ‘First Light’ Images Will Be Blurry—And The Naked-Eye Galaxy That NASA Will Use To Fix Them

How NASA will align the space telescope's 18 mirrors and the irregular dwarf galaxy it will be pointed at first.

www.forbes.com

​

When will Webb take its first images?
NASA estimates that it could take up to 120 days after launch for Webb’s mirror alignment work to be complete. Given that Webb launched on December 25, 2021, that’s April 24, 2022. So Webb will likely be pointing at stars and seeing its “first light” six weeks before that—around mid-March. However, NASA says not to expect the first “showpiece” photos from Webb until about five months after launch, once commissioning ends.

That’s about May 24, 2022.

So whether we’ll see any of Webb’s first test images of stars is doubtful.
It’s more likely that NASA will publicly release a set of beautiful

“first light” ​

photos all in one go during May or June 2022.

 

[HangLow]

What is the Large Magellanic Cloud?
What’s the one big astronomical target in the LMC?
Aside from its estimated 30 billion stars, the most famous target is the Tarantula Nebula. About 160,000 light-years distant, it’s a famous target for astrophotography. Best thought of as a super-massive version of the Orion Nebula, it’s is one hundred times larger and the biggest star-forming region in our part of the Universe. It’s so luminous that if it was as close to us as the Orion Nebula is (about 1,300 light-years), it would cast a shadow on Earth at night according to NASA.

It’s very possible that Webb will be pointed at the Tarantula Nebula during testing. The LMC is close not only to the south celestial pole but also to the bright center of the Milky Way. It’s stuffed with incredible astronomical targets.

The Tarantula Nebula area, NGC 2070, of the Large Magellanic Cloud, LMC. Numerous other nebulas and ... [+]
UNIVERSAL IMAGES GROUP VIA GETTY IMAGES

This image from the NASA/ESA Hubble Space Telescope reveals an ancient, glimmering ball of stars ... [+] ESA/HUBBLE & NASA

What else could Webb be pointed at in the LMC?
For an irregular satellite galaxy,
the LMC has some incredible targets for Webb’s engineers to test its instruments on. They include:

• NGC 1466 globular cluster: a relic from the early Universe about 160,000 light-years distant imaged by Hubble (above).
• NGC 1818 open cluster: a young cluster of about 20,000 stars about 164,000 light-years away that’s also been photographed by Hubble.
• “Ghost Head Nebula” NGC 2080: one of a chain of star-forming regions in the LMC that’s also been imaged by Hubble.
• N 49 supernova remnant: the leftovers of a massive star that died in a supernova blast. Inside is a magnetar—a neutron star that spins once every eight seconds and has a strong magnetic. It’s also been spectacularly photographed by Hubble.

 

[HangLow]

This Sunday's Science Alert;
Things that may aid us in Space Exploration...
-Peace

ENVIRONMENT
Methane Pollution Just Reached New Heights, And The Sources May Not Be What You Think

​

SPACE
This Stupendous Crater on Mars Looks Eerily Like a Tree Stump


NATURE
What Actually Is a 'Bomb Cyclone'? An Atmospheric Scientist Explains


NATURE
Orcas Documented Killing Blue Whales And Eating Their Tongues in a World First


NATURE
How The Venom of The King Baboon Spider Could Help Us Better Understand Chronic Pain




NATURE
Birds Use Earth's Magnetic Field For 'Stop Signs' When They Migrate


NATURE
Scientists Spent 4 Years Identifying a New Wasp That Only Leaves Its Home For 2 Days


HUMANS
Our Brains Keep Us 15 Seconds 'in The Past' to Help Us See a Stable World, Says Study

​

NATURE
How Gut Microbe Symbiosis Helps Squirrels Keep Their Muscles During Hibernation


NATURE
Scientists Solve The Century-Old Mystery of Why This Special Insect Can Float in Water

 

[MaryP]

Why The Webb Telescope’s ‘First Light’ Images Will Be Blurry—
And The Naked-Eye Galaxy That NASA Will Use To Fix Them

Why The Webb Telescope’s ‘First Light’ Images Will Be Blurry—And The Naked-Eye Galaxy That NASA Will Use To Fix Them

How NASA will align the space telescope's 18 mirrors and the irregular dwarf galaxy it will be pointed at first.

www.forbes.com

View attachment 67371861​

When will Webb take its first images?
NASA estimates that it could take up to 120 days after launch for Webb’s mirror alignment work to be complete. Given that Webb launched on December 25, 2021, that’s April 24, 2022. So Webb will likely be pointing at stars and seeing its “first light” six weeks before that—around mid-March. However, NASA says not to expect the first “showpiece” photos from Webb until about five months after launch, once commissioning ends.

That’s about May 24, 2022.

So whether we’ll see any of Webb’s first test images of stars is doubtful.
It’s more likely that NASA will publicly release a set of beautiful

“first light” ​

photos all in one go during May or June 2022.

Oh wow. It's been a long time since I was able to see the Milky Way. Too much light pollution these days.

 

[HangLow]

​

Oh wow. It's been a long time since I was able to see the Milky Way.
Too much light pollution these days.

I grew up in the fifties on our ranch in Texas and our farm in Louisiana, away from the big cities and bright lights, and spent endless nights stargazing... This article may help... It is a short read... I can not wait to see what the Webb can do...

FEATURE | July 28, 2021​

How to Find Good Places to Stargaze​

How to Find Good Places to Stargaze

If you're hoping to do some skywatching, but you're not quite sure how to find a great spot, we have you covered. Here are some key things to know about how to find the best places for stargazing.

solarsystem.nasa.gov

 

[MaryP]

View attachment 67372091​

I grew up in the fifties on our ranch in Texas and our farm in Louisiana, away from the big cities and bright lights, and spent endless nights stargazing... This article may help... It is a short read... I can not wait to see what the Webb can do...

FEATURE | July 28, 2021​

How to Find Good Places to Stargaze​

How to Find Good Places to Stargaze

If you're hoping to do some skywatching, but you're not quite sure how to find a great spot, we have you covered. Here are some key things to know about how to find the best places for stargazing.

solarsystem.nasa.gov

Thanks!

 

[HangLow]

THIS WEEK IN SCIENCE
24 - 30 January 2022

​

 

[HangLow]

Why is the Webb at Lagrange point 2?

​

 

[psikeyhackr]

Lagrange Point 2, James Webb Space Telescope’s Observational Post In Space, Explained

The James Webb Space Telescope has been parked in space where it was planned to be.This is a special gravitational parking spot that will enable Webb to do the ambitious science it aims for.

swarajyamag.com

 

[HangLow]

The telescope and scientific instruments started to cool rapidly in the shade of the sun shield once it was deployed, but it will take several weeks for them to cool all the way down to stable operational temperatures. This cooldown will be carefully controlled with strategically-placed electric heater strips.

Hmmm, why would it take several weeks to cool down, and how does one cool something off with electric heater strips?

 

[HangLow]

Great Question...
Those who are following the mission must be aware that the Webb telescope carried five layers of sun shields which it uses to prevent its scientific instruments from warming up from the Sun’s heat.

NASA says that the sun shields have helped a lot in cooling down the instruments but further cooling will take place in the coming days.

However, Webb’s Mid-Infrared Instrument (MIRI) would require cooling as low as -266° C,
which will be done through a special refrigerator called the ‘cryocooler’.

As I thought, the cryocooler is a Heat Pump / Air Conditioner... The Webb MIRI cryocooler is basically a sophisticated refrigerator with its pieces distributed throughout the observatory. The primary piece is the Cryocooler Compressor Assembly (CCA). It is a heat pump consisting of a precooler that generates about 1/4 Watt of cooling power at about 14 kelvin (using helium gas as a working fluid), and a high-efficiency pump that circulates refrigerant (also helium gas) cooled by conduction with the precooler, to MIRI...
Cryocooler Webb/NASA
https://webb.nasa.gov › content › about › innovations
In the Air Force, we used Cryogenically cooled, parametric amplifiers for our very large dishes...

Cryogenically Cooled Amplifiers | Performance | Applications​

Cryogenically Cooled Amplifiers: The term solid-state is used deliberately here; it does not mean "semiconductor." In terms of the somewhat older maser
www.eeeguide.com


CRYOCOOLER


The cooling device for the Mid-Infrared Instrument, or MIRI, is one of the James Webb Space Telescope's four instruments. The MIRI requires a lower operating temperature than Webb's other instruments, the cryocooler accommodates this requirement. Image: NASA/JPL-Caltech

Cryocooler Webb/NASA​

James Webb Space Telescope
webb.nasa.gov

 

[justabubba]

The telescope and scientific instruments started to cool rapidly in the shade of the sun shield once it was deployed, but it will take several weeks for them to cool all the way down to stable operational temperatures. This cooldown will be carefully controlled with strategically-placed electric heater strips.

Hmmm, why would it take several weeks to cool down, and how does one cool something off with electric heater strips?

would the heater strips be used to control cold-shock?

 

[RAMOSS]

The telescope and scientific instruments started to cool rapidly in the shade of the sun shield once it was deployed, but it will take several weeks for them to cool all the way down to stable operational temperatures. This cooldown will be carefully controlled with strategically-placed electric heater strips.

Hmmm, why would it take several weeks to cool down, and how does one cool something off with electric heater strips?

They want it to cool down in a constant predictable manner so the structure doesn't warp

 

[HangLow]

NASA's James Webb Space Telescope​

turns on cameras to look at first-star target​

NASA's James Webb Space Telescope turns on cameras to look at first star target

Spacecraft controllers started powering up James Webb Space Telescope's four cutting-edge instruments as they prepare to take test images of the first star.

www.space.com

Spacecraft controllers have begun powering up the four cutting-edge instruments on NASA's James Webb Space Telescope as they prepare for the observatory's first glimpses of a target star.

That star, called HD 84406, is located 241 light-years from Earth and part of the constellation Ursa Major, the Great Bear. The images will not be used for science but will help the ground teams align the 18 golden segments of Webb's 21-foot-wide (6.5 meters) main mirror.

 

[psikeyhackr]

Hmmm, why would it take several weeks to cool down, and how does one cool something off with electric heater strips?

Thermos bottles use vacuum as an insulator. Conduction, convection and radiation are the ways of transferring heat. Conduction and convection don't work in space. So getting rid of heat only by radiation must take a while to approach absolute zero.

That is the funny thing about some episodes of Star Trek TNG. That huge ship was supposedly getting cold after just a few hours of life support going off.

 

[jpn]

Why The Webb Telescope’s ‘First Light’ Images Will Be Blurry—And The Naked-Eye Galaxy That NASA Will Use To Fix Them

From the article:

​

“We then have to align the mirrors to the point at which they’re actually aligned to a fraction of a wavelength of light.”​

Friggin' fantastic.

 

[HangLow]

​

 

[HangLow]

Did you know that anyone can submit a request for the JWST to look at something???
Did you know that the first data from the JWST will be open to everyone on the planet...

So, until May we may as well play a game of 'What If"
I'll go first...

00001
- What if when the JWST peer back into time and space with its BIG EYE, there is a BIG EYE staring back???

00002
- What if we see another technologically advanced species??? Will we be told??? What will we do???

you get the idea...
-peace

 

[HangLow]

00003
- What if we see them and they don't see us... Then What???

 

[HangLow]

The James Webb telescope reaches its final destination in space, a million miles away

The $10 billion telescope is nearly ready to begin capturing images that scientists hope will help uncover the mysteries of the universe — and scope out other possible habitable planets.

www.opb.org

Thirty days after its launch,
the tennis court-size telescope made its way
into a parking spot that's about a million miles away from Earth.

From there, it will begin its ambitious mission

• to better understand the early days of our universe,
• peer at distant exoplanets and their atmospheres,
• and help answer large-scale questions such as how quickly the universe is expanding.

 

[Ug make hammer]

The telescope and scientific instruments started to cool rapidly in the shade of the sun shield once it was deployed, but it will take several weeks for them to cool all the way down to stable operational temperatures. This cooldown will be carefully controlled with strategically-placed electric heater strips.

Hmmm, why would it take several weeks to cool down, and how does one cool something off with electric heater strips?

Heat pump I guess. The heater strips would be on the hot side of the assembly, with the amplifiers for communications.

 

[Ug make hammer]

00002
- What if we see another technologically advanced species??? Will we be told??? What will we do???

We will be told, because

00002.1 Scientists get the info before politicians do.
00002.2 Setting up long-term committees to "represent" humanity would be a vote winner.
00002.3 Both of the above: trying to cover it up would be political suicide

 

[HangLow]

We will be told, because

00002.1 Scientists get the info before politicians do.
00002.2 Setting up long-term committees to "represent" humanity would be a vote winner.
00002.3 Both of the above: trying to cover it up would be political suicide

IDK... i would hope that it got out leaked out...
They would want to cover it up... LIE LIE LIE...

do you think it will cause worldwide chaos???
or unite mankind?? nope...

i bet they would shut the jwst down, maybe blow it out of space

some percentage will not believe it... some disbelieve the moon landing...

 

[Ug make hammer]

IDK... i would hope that it got out leaked out...
They would want to cover it up... LIE LIE LIE...

do you think it will cause worldwide chaos???
or unite mankind?? nope...

It would likely unite mankind in building better space weapons. Sigh.

But this isn't the thread for that. If aliens are coming for us at near light speed, we'd need a different telescope to see them (they would be blue shifted) and if they're coming for us with FTL they're so far beyond us we have no chance.

What the Webb is best suited for, is observing large events billions of years in the past. Peace!