JWST/HST images of Uranus and Neptune |
JWST/HST images of Uranus and Neptune |
Dec 2 2021, 09:39 PM
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#31
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Senior Member Group: Members Posts: 2106 Joined: 13-February 10 From: Ontario Member No.: 5221 |
Yes, that polar hood is absolutely enormous, and the entire planet is probably a bit brighter as a result. Pure bad luck that Voyager 2 didn't see it, if this phenomenon occurs at either hemisphere's equinox.
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Dec 6 2021, 07:24 PM
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#32
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Member Group: Members Posts: 708 Joined: 1-April 08 From: Minnesota ! Member No.: 4081 |
Some encouraging news https://www.nasa.gov/feature/goddard/2021/h...m-investigating for HST continuing to provide us with periodic views of Uranus and Neptune.
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Apr 12 2022, 06:00 PM
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#33
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Member Group: Members Posts: 708 Joined: 1-April 08 From: Minnesota ! Member No.: 4081 |
A new article, published 4/11/’22, concerns Neptune’s atmospheric temperature variation over the last 20 years. Although data from Hubble was not used, infrared observations from Spitzer and multiple, large ground-based telescopes (8-10 meter class instruments) provided more than 95 images acquired between 2003 and 2020 at wavelengths ranging from 7.7 to 25.5 μm. The full article is here: https://iopscience.iop.org/article/10.3847/PSJ/ac5aa4
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Mar 24 2023, 09:14 PM
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#34
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Member Group: Members Posts: 708 Joined: 1-April 08 From: Minnesota ! Member No.: 4081 |
A new article concerning the latest views from Hubble on Jupiter and Uranus was published yesterday and is here: https://www.nasa.gov/feature/goddard/2023/h...iter-and-uranus
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Apr 6 2023, 07:20 PM
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#35
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Solar System Cartographer Group: Members Posts: 10226 Joined: 5-April 05 From: Canada Member No.: 227 |
New Webb image of Uranus:
https://webbtelescope.org/contents/news-rel...s-2023-117.html I played with the image a bit to pull out a bit of extra detail (in the bright region particularly). Anyone with better skills than mine especially in sharpening the image might be able to see more. Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Apr 6 2023, 09:35 PM
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#36
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Member Group: Members Posts: 251 Joined: 14-January 22 Member No.: 9140 |
Nice improvements on an already nice image!
I like how the rings had only been detected previously by one ground-based telescope, and the JWST, to say the least, detects them in amazing detail. As with JWST's previous release of a Neptune image, the trick here is using IR wavelengths that greatly darken this particular planet, allowing longer exposures that pump up the rings without losing them in the glare. A storm on the left seems to have clouds that rise far enough above most of the methane in the atmosphere that it glares rather prominently. |
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Apr 7 2023, 07:23 PM
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#37
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Member Group: Members Posts: 655 Joined: 22-January 06 Member No.: 655 |
Beautiful!
The axial tilt really highlights how well Voyager 2 performed during its encounter (and with an iffy scan platform too) - all the most important observations and measurements (moons, rings, atmosphere, fields/particles, occultations etc) packed into the six hours or so either side of closest approach. |
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Apr 9 2023, 04:59 PM
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#38
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Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Topic title updated to reflect JWST's new contributions.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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