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Old July 12th, 2022 #21
Ole Massa
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Looks like a Pink Floyd album cover.
 
Old July 13th, 2022 #22
Ray Allan
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Quote:
Originally Posted by T.Garrett View Post
Beautiful thing, built by Ball Aerospace and Northrop Grumman shame its deployed at an unserviceable distance form earth incase its damaged by a space rock. Nasa teevee has a fat nigger sow doing the introduction to the 'first images' ...shame that this mission, which started over two decades ago will probably be Nasa's last hurrah.


watching Nasa Live ...


itz hard to listen to this nigger bitch, she mispronounces half of what she reads off the teleprompter ...hahaha they cant even run the sound system correctly, one of the pols had to hand another his mike because it didnt work
I didn't watch that, but I have seen that sheboon on NASA TV before and everything she does is a trainwreck. It certainly doesn't help NASA's public image, except for the PC crowd, who probably think having a bunch of Apefirmative Action creatures are great. As I've said before, NASA now stands for 'Nigger And Spic Astro-naughts.' Sure ain't your daddy's and grandaddy's NASA anymore like everything else in the KWA.

A slide-show of some of JWST's images:

https://www.space.com/james-webb-spa...e-first-photos
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Old July 18th, 2022 #23
T.Garrett
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Post JWST might have been damaged more than first thought

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Nasa’s James Webb Space Telescope damaged after being smashed by space rock, images show


Permanent damage to C3, one of the Webb telescope’s 18 mirror segments, can be seen in the lower right corner of the image of Webbs primary mirror the right compared to the image on the left, taken before a micrometeorite strike in May, 2022 (Nasa/ESA/CSA)

Damage to the James Webb Telescope’s primary mirror from a micrometeorite strike in May is worse than first thought, according to new images revealed in a new report.

A paper published Tuesday on the academic preprint server arxiv.org detailing Webb’s performance during the commissioning of the telescope revealed that most of the micrometeorite strikes on Webb’s big mirror resulted in negligible damage, a strike that occured in mid-may left the telescope with permanent damage.

“The single micrometeorite impact that occurred between 22 — 24 May 2022 UT exceeded prelaunch expectations of damage for a single micrometeoroid triggering further investigation and modeling by the JWST Project,” the report read.

Unlike the Hubble Space Telescope, which encloses the primary mirror the telescope uses to collect light and focus light on scientific instruments in a cylindrical housing, Webb’s 6.5-metre diameter segmented mirror is exposed to space. But given Webb’s orbit around Lagrangian point 2, or L2, a region of space about 1 million miles from Earth, scientists only expected Webb to encounter potentially hazardous micrometeorites about once per month.

During the commissioning period from late January into June, as ground controllers calibrated, aligned, and tested Webb’s mirrors and instruments, the primary mirror sustained six total micrometeorite strikes.

Of those strikes, five did little damage, causing less than 1 nanometer of wavefront error root mean square (RMS), a technical way to describe how much Webb’s mirror distorts the starlight the mirror collects. Most of the distortion added by those five strikes can be corrected out of the mirror, since the 18 hexagonal segments that make up its face can be individually and finely adjusted.

But the sixth strike, which impacted a mirror segment labeled C3, did more damage that can be fully corrected for. That micrometeorite strike raised the wavefront error of the segment from 56 nanometers to 178 nanometers after correction by adjusting the segment.

Because every mirror segment is adjustable, however, the damage to the C3 segment could be compensated for and did not compromise the resolution of Webb’s primary mirror as a whole, according to the report. The total wavefront error for the entire mirror increased by around 9 nanometers due to the strike.

“It is not yet clear whether the May 2022 hit to segment C3 was a rare event (i.e. an unlucky early strike by a high kinetic energy micrometeoroid that statistically might occur only once in several years),” the report read, “or whether the telescope may be more susceptible to damage by micrometeoroids than pre-launch modeling predicted.”

The report goes on to note the Webb project team is considering actions to mitigate future micrometeorite strikes, such as limiting how long the telescope can be pointed in directions known to expose the mirror to a higher probability of micrometeorite strikes.

Preserving the long-term health of the Webb telescope is a high priority for Nasa and astronomers everywhere.

After more than 20 years and $10 billion spent in development, the space telescope was launched atop an Ariane 5 rocket on Christmas Day. That launch was more precise than expected, saving Webb considerable propellant it would have used to correct its course after launch, and nearly doubling the observatory’s projected operational lifespan — so long as space rocks don’t spoil its optics.

“Before launch, JWST was required to carry propellant for at least 10.5 years of mission lifetime,” the report read. “Now that JWST is in orbit around L2, it is clear that the remaining propellant will last for more than 20 years of mission lifetime.”
https://www.yahoo.com/entertainment/...212449197.html


Life's a bitch, ey?
 
Old July 18th, 2022 #24
Ray Allan
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Maybe the telescope designers should have put a micrometeoroid shield on it, but it may not have been practical to do so, weight issues, interference with the mirror, or something. Unfortunately, where JWST is located it cannot be serviced by astronauts like Hubble is in low Earth orbit.
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Old July 19th, 2022 #25
Nikola Bijeliti
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Quote:
Originally Posted by Ray Allan View Post
Unfortunately, where JWST is located it cannot be serviced by astronauts like Hubble is in low Earth orbit.
Not with current technology, but Artemis could, at least in theory, be used for a service mission when it is ready.
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Old July 23rd, 2022 #26
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Default Dr. Becky

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Old July 24th, 2022 #27
Ray Allan
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Imagine what the night sky on a planet in one of the Stephan's Quintet galaxies must look like.
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Last edited by Ray Allan; July 24th, 2022 at 07:32 AM.
 
Old August 4th, 2022 #28
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Default Cartwheel Galaxy



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This image from Webb's Mid-Infrared Instrument (MIRI) shows a group of galaxies including a large distorted ring-shaped galaxy known as the Cartwheel. The Cartwheel Galaxy, located 500 million light-years away in the Sculptor constellation is composed of a bright inner ring and an active outer ring. While the outer ring has a lot of star formation, the dusty area in between reveals many stars and star clusters.
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Old 3 Weeks Ago #29
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Spectacular videos reveal 'Phantom Galaxy' by James Webb Space Telescope, Hubble

https://www.space.com/amazing-phanto...-hubble-videos



"Phantom Galaxy" or M74, located 32 million light-years away in the constellation Pisces.
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Old 3 Weeks Ago #30
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NASA's Webb Takes its First Ever Direct Image of Distant World

https://blogs.nasa.gov/webb/2022/09/...distant-world/
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Old 2 Weeks Ago #31
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