Stansberry (STScI)īut just how fast can an object move and still be tracked by Webb? This was an important question for scientists who study asteroids and comets. Click on the image to play the gif again. Asteroid 6481 Tenzing, center, is seen moving against a background of stars in this series of images taken by NIRCam. This test demonstrated the ability of the observatory to find and track guide stars in the vicinity of bright Jupiter. Webb also obtained these images of Jupiter and Europa moving across the telescope’s field of view in three separate observations. Jupiter and its moon Europa are seen in this animation made from three images taken through the NIRCam instrument 2.12 micron filter. “The Jupiter images in the narrow-band filters were designed to provide nice images of the entire disk of the planet, but the wealth of additional information about very faint objects (Metis, Thebe, the main ring, hazes) in those images with approximately one-minute exposures was absolutely a very pleasant surprise,” said John Stansberry, observatory scientist and NIRCam commissioning lead at the Space Telescope Science Institute. That the rings showed up in one of Webb’s first solar system images is “absolutely astonishing and amazing,” Milam said. Stansberry (STScI)Īdditionally, Webb easily captured some of Jupiter’s rings, which especially stand out in the NIRcam long-wavelength filter image. Jupiter and some of its moons are seen through NIRCam’s 3.23 micron filter. “I think that’s just one of the coolest things that we’ll be able to do with this telescope in the solar system,” Milam said. Webb may be able to see the signatures of plumes depositing material on the surface on Europa. Scientists will use Webb to explore the tantalizing question of whether we can see plumes of material spewing out of moons like Europa and Saturn’s moon Enceladus. Scientists were especially eager to see these images because they are proof that Webb can observe the satellites and rings near bright solar system objects such as Jupiter, Saturn, and Mars. “It’s really exciting to think of the capability and opportunity that we have for observing these kinds of objects in our solar system.” “I couldn’t believe that we saw everything so clearly, and how bright they were,” said Stefanie Milam, Webb’s deputy project scientist for planetary science based at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. Other visible moons in these images include Thebe and Metis. What’s more, Europa’s shadow can be seen to the left of the Great Red Spot. Stansberry (STScI)Ĭlearly visible at left is Europa, a moon with a probable ocean below its thick icy crust, and the target of NASA’s forthcoming Europa Clipper mission. Right: Jupiter and Europa, Thebe, and Metis are seen through NIRCam’s 3.23 micron filter. Left: Jupiter, center, and its moons Europa, Thebe, and Metis are seen through the James Webb Space Telescope’s NIRCam instrument 2.12 micron filter. “Combined with the deep field images released the other day, these images of Jupiter demonstrate the full grasp of what Webb can observe, from the faintest, most distant observable galaxies to planets in our own cosmic backyard that you can see with the naked eye from your actual backyard,” said Bryan Holler, a scientist at the Space Telescope Science Institute in Baltimore, who helped plan these observations. The iconic spot appears white in this image because of the way Webb’s infrared image was processed. A view from the NIRCam instrument’s short-wavelength filter shows distinct bands that encircle the planet as well as the Great Red Spot, a storm big enough to swallow the Earth. Stansberry (STScI)įans of Jupiter will recognize some familiar features of our solar system’s enormous planet in these images seen through Webb’s infrared gaze. Jupiter, center, and its moon Europa, left, are seen through the James Webb Space Telescope’s NIRCam instrument 2.12 micron filter. The data demonstrates Webb’s ability to track solar system targets and produce images and spectra with unprecedented detail. The data includes images of Jupiter and images and spectra of several asteroids, captured to test the telescope’s instruments before science operations officially began July 12. On the heels of Tuesday’s release of the first images from NASA’s James Webb Space Telescope, data from the telescope’s commissioning period is now being released on the Space Telescope Science Institute’s Mikulski Archive for Space Telescopes.
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