James Webb Space Telescope, information, updates and discussion |
James Webb Space Telescope, information, updates and discussion |
Aug 23 2005, 02:01 PM
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Member Group: Members Posts: 134 Joined: 13-March 05 Member No.: 191 |
The manufacture of the JWST mirror blanks has now been completed.
Despite this milestone, the fate of JWST is still somewhat precarious, because although the scientific bang from the telescope is expected to be huge, the bucks required have increased to a staggering $4.5 billion. A Space.com article on the squeeze in NASA's space-based astronomy plans gives some background. The JWST home page can be found here. The Space Telescope Science Institute, which runs Hubble, also has a site here. As does ESA. |
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Aug 24 2022, 10:10 PM
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Director of Galilean Photography Group: Members Posts: 896 Joined: 15-July 04 From: Austin, TX Member No.: 93 |
For amusement purposes only, I have taken a shot of Pluto from New Horizons and a shot of Jupiter from JWST and adjusted their sizes to show what kind of details we could expect from a Pluto JWST image. Pluto is only 1.7% the diameter of Jupiter, but assuming we can get similar resolution we should see some real features. And since we already have closeups we can probably deconvolute a better picture than Hubble did without prior knowledge of the surface.
-------------------- Space Enthusiast Richard Hendricks
-- "The engineers, as usual, made a tremendous fuss. Again as usual, they did the job in half the time they had dismissed as being absolutely impossible." --Rescue Party, Arthur C Clarke Mother Nature is the final inspector of all quality. |
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Aug 24 2022, 10:53 PM
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Senior Member Group: Members Posts: 2542 Joined: 13-September 05 Member No.: 497 |
For amusement purposes only, I have taken a shot of Pluto from New Horizons and a shot of Jupiter from JWST and adjusted their sizes to show what kind of details we could expect from a Pluto JWST image. Unless you deliberately blurred the images, this kind of simulation always massively overestimates how many details you would really be able to see. Just FYI. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Aug 25 2022, 02:46 PM
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Director of Galilean Photography Group: Members Posts: 896 Joined: 15-July 04 From: Austin, TX Member No.: 93 |
Unless you deliberately blurred the images, this kind of simulation always massively overestimates how many details you would really be able to see. Just FYI. Right, because the shrunk pixels don't get affected by the PSF of the telescope? Here's one with a 5 pixel Gaussian applied. Pluto is a target in the first Observing Cycle with a program lead by Emmanuel Lellouch so we'll know in about a year I'd say? https://www.stsci.edu/jwst/science-executio...on.html?id=1658 -------------------- Space Enthusiast Richard Hendricks
-- "The engineers, as usual, made a tremendous fuss. Again as usual, they did the job in half the time they had dismissed as being absolutely impossible." --Rescue Party, Arthur C Clarke Mother Nature is the final inspector of all quality. |
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