From the press release: ... Compare with images of Io taken recently by the Juno spacecraft's JunoCam and a spectrographic map taken with JWST.
From the press release:
Taken by the Large Binocular Telescope (LBT) on Mount Graham in Arizona, the images were made possible by a new high-contrast optical imaging instrument, dubbed SHARK-VIS, and the telescope’s adaptive optics system, which compensates for the blurring induced by atmospheric turbulence.
The images reveal surface features as small as 50 miles across, a spatial resolution that until now had been achievable only with spacecraft sent to Jupiter, such as the two Voyager spacecraft in 1979, the Galileo mission, which ended in 2003, and Juno, which has been orbiting Jupiter since 2016.
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De Pater has been observing Io for decades, mostly using ground-based infrared telescopes, such as the Keck Observatory and Gemini Observatory in Hawaii, and radio telescopes like the Atacama Large (sub)Millimeter Array (ALMA) in Chile. Infrared observations capture hot features, such as lava flows, but are inherently lower resolution. Most recently, she analyzed infrared images from NASA’s newest observatory, the James Webb Space Telescope (JWST).
From the press release:
...
Compare with images of Io taken recently by the Juno spacecraft's JunoCam and a spectrographic map taken with JWST.