NASA Releases Ridiculously Sharp Webb Space Telescope Images

During a press conference Monday morning, NASA provided an update on the status of the Webb Space Telescope and released images from the telescope that put Webb's progress on dazzling display. Gizmodo reports: 'I'm delighted to report that the telescope alignment has been completed with performance even better than we had anticipated,' said Michael McElwain, a Webb observatory project scientist at NASA's Goddard Space Flight Center, in a NASA press conference. 'This is an extraordinary milestone for humanity.' Webb sits at an observational point called L2 nearly 1 million miles from Earth, where it will look further back in time than the Hubble Space Telescope. (Hubble will continue to operate alongside Webb once the latter is operational). The preparation and testing of the telescope's science instruments (a process called commissioning) will take about two months to complete. Only once the commissioning is complete can Webb begin taking the scientific images that will define its tenure in space.

But some images are already being collected, to make sure the telescope is functioning properly. Webb's coldest instrument -- the Mid-Infrared Instrument (MIRI) -- recently took a test image of the Large Magellanic Cloud, a satellite galaxy of the Milky Way that was previously imaged by the now-retired Spitzer Space Telescope's Infrared Array Camera. Webb's image of the same region makes Spitzer's look like a finger painting, showing interstellar gas clearly distributed across the star field. The stars -- blots, in Spitzer's view -- are seven-pointed beacons of light in the MIRI test.

Webb's next steps will focus on taking images of its science targets, known as early release observations. These will not only be the first images of Webb science targets, but they will be the first images processed into full color. (Webb sees the cosmos in the infrared and near-infrared wavelengths, but the images will be translated into visible light.) Klaus Pontoppidan, a Webb project scientist at the Space Telescope Science Institute, said in the briefing that the chief differences between the most recent images and the ones to come are that the former were taken to test the telescope's ability to see clearly, whereas the latter will test the telescope's ability to image science targets. Pontoppidan wouldn't elaborate on what Webb team will capture in the early release observations -- the targets are a 'surprise,' he said.

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