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Post by graywolf on Mar 15, 2022 5:58:34 GMT -8
Thanks for posting these.
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Post by High Sierra Fan on Mar 15, 2022 7:01:23 GMT -8
An update by the James Webb Space Telescope team is scheduled for Wednesday. NASA to Discuss Progress as Webb Telescope’s Mirrors Align
“NASA will hold a virtual media briefing at noon EDT Wednesday, March 16, to provide an update on the James Webb Space Telescope’s mirror alignment. The briefing will air live on NASA TV, the NASA app, and the agency’s website.
Participants will share progress made in aligning Webb’s mirrors, resulting in a fully focused image of a single star. NASA will make imagery demonstrating the completion of this milestone available on the agency’s website at 11:30 a.m., prior to the briefing.
In recent weeks, the Webb team successfully captured starlight through each of Webb’s 18 mirror segments. The team then refined and stacked those 18 individual dots of light on top of one another to form an initial alignment image of a single star. Since then, in stages of alignment called “coarse phasing" and "fine phasing,” engineers have made smaller adjustments to the positions of Webb’s 18 primary mirror segments so they act as a single mirror, producing a sharp and focused image of a single star.
Webb, an international partnership with ESA (European Space Agency) and the Canadian Space Agency, launched Dec. 25 from Europe’s Spaceport in Kourou, French Guiana. After unfolding into its final form in space and successfully reaching its destination 1 million miles from Earth, the observatory is now in the process of preparing for science operations. The Webb team will release the telescope’s first science images and data this summer after completing telescope alignment and preparing the instruments.“
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Travis
Trail Wise!
WYOMING NATIVE
Posts: 2,574
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Post by Travis on Mar 15, 2022 7:34:48 GMT -8
So far this appears to be a remarkable success story. Can't wait to see some images.
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Post by Coolkat on Mar 15, 2022 8:52:59 GMT -8
No kidding! Thanks for sharing! Incredible!!
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Post by High Sierra Fan on Mar 16, 2022 10:42:40 GMT -8
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Travis
Trail Wise!
WYOMING NATIVE
Posts: 2,574
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Post by Travis on Mar 16, 2022 19:33:45 GMT -8
So it appears that the small gaps between mirror segments are removed by calibration and focus of the individual segments. I thought they would be weeded out. And the photo shows that they are.
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Post by High Sierra Fan on Jun 14, 2022 21:06:15 GMT -8
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balzaccom
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Waiting for spring...
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Post by balzaccom on Jun 19, 2022 15:09:59 GMT -8
That's a pretty "stellar" optical image, complete with the diffraction spikes from the six mirror segments...
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Post by swimswithtrout on Jul 11, 2022 15:46:41 GMT -8
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Post by High Sierra Fan on Jul 13, 2022 11:06:21 GMT -8
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swiftdream
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the Great Southwest Unbound
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Post by swiftdream on Jul 13, 2022 17:21:14 GMT -8
It is impressive to view the JW deep field side by side with the Hubble deep field. The Hubble version is one of the most impressive images I’ve ever seen and JW is so much more detailed with such powerful resolving. It took Hubble ten days to capture its version but JW took about 12 hours. I think JW is going to be sending a mountain of constant overpowering images. That’s some crazy stuff, communicating with such a thing one million miles away.
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Post by High Sierra Fan on Sept 21, 2022 5:21:52 GMT -8
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balzaccom
Trail Wise!
Waiting for spring...
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Post by balzaccom on Sept 21, 2022 5:33:20 GMT -8
Neptune’s rings and moons as seen by Webb. Amazing. The explanation is as amazing at the photo!
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reuben
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Gonna need more Camels at the next refugio...
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Post by reuben on Nov 17, 2022 17:02:22 GMT -8
This is what our sun may have looked like. 4.5 billion years ago.
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swiftdream
Trail Wise!
the Great Southwest Unbound
Posts: 540
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Post by swiftdream on Nov 17, 2022 17:26:26 GMT -8
They say the waist of the hourglass is about the size of our solar system.
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