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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#201
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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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Dec 18 2022, 03:16 PM
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#202
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Member Group: Members Posts: 251 Joined: 14-January 22 Member No.: 9140 |
Here are the abstracts from the JWST "First Science Results" conference held last week. These abstracts are, of course, much more broad than deep or detailed, but there's still plenty of interesting stuff here.
https://www.stsci.edu/files/live/sites/www/...-compendium.pdf |
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Dec 20 2022, 07:10 PM
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#203
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Member Group: Members Posts: 251 Joined: 14-January 22 Member No.: 9140 |
Poster abstracts from the same event:
https://www.stsci.edu/files/live/sites/www/...esentations.pdf The TRAPPIST-1 abstracts include the fact that one transit is not sufficient for detecting atmospheric molecular composition, there's some optimism that four transits may be sufficient, but also a note that features on the star TRAPPIST-1 introduced some unexpected noise that is much larger than the expected signal from a transiting planet's atmosphere. (Perhaps it is nonetheless distinguishable from atmospheric absorption features?) Again, publications from before the JWST indicate that measuring the atmospheric composition would benefit, ideally, from observations made during dozens of transits, per planet – more than is likely feasible. |
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