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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Jul 12 2022, 05:22 PM
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#202
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Senior Member Group: Members Posts: 1452 Joined: 26-July 08 Member No.: 4270 |
Jupiter! (from here which also has other goodies including a transit of the ~1.4 R_earth planet transiting GJ 4332).
-------------------- -- Hungry4info (Sirius_Alpha)
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Jul 12 2022, 07:56 PM
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#203
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Senior Member Group: Members Posts: 2106 Joined: 13-February 10 From: Ontario Member No.: 5221 |
Jupiter! (from here which also has other goodies including a transit of the ~1.4 R_earth planet transiting GJ 4332). Wow! For some reason I read somewhere that Jupiter is actually too bright for JWST to observe (glad to be wrong!) |
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Jul 13 2022, 03:28 AM
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#204
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Member Group: Members Posts: 251 Joined: 14-January 22 Member No.: 9140 |
Even Mars (which has a higher surface brightness than Jupiter) isn't too bright for JWST to observe, and will be observed by it. Mercury and Venus are off limits, of course.
Despite the extensive exploration that Mars, Jupiter, and Saturn have already received, JWST still has spectroscopic capabilities that none of the spacecraft that have visited those places could match. |
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Jul 13 2022, 07:27 AM
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#205
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Member Group: Members Posts: 251 Joined: 14-January 22 Member No.: 9140 |
For those curious about the jewel of exoplanet targets, TRAPPIST-1 has already been observed by JWST, will be observed again in the next day or so, and yet again within a week. Based on at least two approved programs, it will be targeted a minimum of 17 times during the first year (Cycle 1), timed to match predicted transits of all seven of its known planets. So, in a nutshell, this much anticipated work is underway, and it's anyone's guess when the first results will be announced, but it seems like a good bet that preliminary results will be released by early 2023 if not sooner, but, as the signals accumulate over many repeated observations, it won't be anytime soon that JWST is done with this amazing system of multiple high-interest targets.
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Jul 13 2022, 06:18 PM
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#206
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Member Group: Members Posts: 723 Joined: 13-June 04 Member No.: 82 |
For those curious about the jewel of exoplanet targets, TRAPPIST-1 has already been observed by JWST, will be observed again in the next day or so, and yet again within a week. Based on at least two approved programs, it will be targeted a minimum of 17 times during the first year (Cycle 1), timed to match predicted transits of all seven of its known planets. So, in a nutshell, this much anticipated work is underway, and it's anyone's guess when the first results will be announced, but it seems like a good bet that preliminary results will be released by early 2023 if not sooner, but, as the signals accumulate over many repeated observations, it won't be anytime soon that JWST is done with this amazing system of multiple high-interest targets. From THIS THREAD: Combined transit list for the TRAPPIST-1 system: TRAPPIST-1b: 5 transits, MIRI/F1500W (GTO 1177) 5 transits, MIRI/F1280W (GTO 1279) 2 transits, NIRISS/SOSS (CO 2589) TRAPPIST-1c: 4 transits, NIRSpec/S1600A1 (CO 2420) 2 transits, NIRISS/SOSS (CO 2589) TRAPPIST-1d: 5 transits, NIRISS/SOSS (GTO 1201) TRAPPIST-1e: 4 transits, NIRSpec/BOTS (GTO 1331) 2 transits, MIRI/F1500W (CO 2304) TRAPPIST-1f: 2 transits, NIRSpec/BOTS (GTO 1201) TRAPPIST-1g: 2 transits, NIRSpec/BOTS (CO 2589) TRAPPIST-1h: 3 transits, NIRSpec/PRISM (CO 1981) 2 transits, NIRSpec/BOTS (CO 2589) NOTE -- CO 2590 changed to CO 2589 as per StargazeInWonder |
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Jul 13 2022, 09:14 PM
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#207
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Member Group: Members Posts: 251 Joined: 14-January 22 Member No.: 9140 |
Thanks for the update, Mongo – double what I had found, and then some.
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