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A comment on New telescope images of Jupiter's moon Io rival those from spacecraft. Parent comment

Re:New telescope images of Jupiter's moon Io rival those fro... by rbanffy on Tuesday June 04, 2024 @04:25AM (#40571999)
It rivals images from spacecraft in Earth orbit - as in Hubble or Webb. It won’t rival images from cameras sent to the near vicinity of the targets, but those can take decades from the moment you decide to take a picture to the time you take it, unless you already decided you’d take some pictures from that general location decades prior.
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Re:New telescope images of Jupiter's moon Io rival those fro... by shiroiushi on Tuesday June 04, 2024 @04:47AM (#40572134)
>It rivals images from spacecraft in Earth orbit - as in Hubble or Webb. (emphasis mine)

It seems like this critical detail was left out of the headline.

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Re:New telescope images of Jupiter's moon Io rival those fro... by rbanffy on Tuesday June 04, 2024 @06:49AM (#40572909)
Still technically correct, the best kind of correct. I wonder how much cheaper are land-based telescopes over the lifetime of instruments such as the Hubble or the Webb.

Also, a huge shame the Overwhelmingly Large Telescope was cancelled. We need more creative names for those.

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Re:New telescope images of Jupiter's moon Io rival those fro... by kloch on Tuesday June 04, 2024 @11:09AM (#40575409)
Angular resolution through the Atmosphere has been solved with adaptive optics and advanced mathematical techniques.

Unfortunately, nothing can remove the temperature of the atmosphere (which affects infrared imaging), or the absorption of many wavelength bands.

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Re:New telescope images of Jupiter's moon Io rival those fro... by alfiopuglisi on Tuesday June 04, 2024 @01:28PM (#40576938)
> I wonder how much cheaper are land-based telescopes over the lifetime of instruments such as the Hubble or the Webb.

10-100 times cheaper. An LBT night is around $50k-100k, which over 10 years corresponds to $300 millions. JWST total budget is about $10 billions.

True, JWST can operate close to 24/7. On the other hand, land-based telescopes are under constant refurbishment and upgrades, and they become more powerful over time.

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Re:New telescope images of Jupiter's moon Io rival those fro... by shiroiushi on Tuesday June 04, 2024 @07:44PM (#40580050)
Sure, but you're comparing apples and oranges. It's like comparing a sports car to a boat. A ground-based telescope can never do what the JWST can do, because of the atmosphere (namely, do IR photography).
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Re:New telescope images of Jupiter's moon Io rival those fro... by WrongAssumption on Tuesday June 04, 2024 @12:51PM (#40576545)
Doesn’t change your point, as I believe you are mainly referring to distance from the object being observed. But Webb orbits the sun.
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