Elizabeth Howell, Ph.D., is a contributing writer for Space.com since 2012. As a proud Trekkie and Canadian, she tackles topics like spaceflight, diversity, science fiction, astronomy and gaming to help others explore the universe. Elizabeth's on-site reporting includes two human spaceflight launches from Kazakhstan, and embedded reporting from a simulated Mars mission in Utah. She holds a Ph.D. and M.Sc. in Space Studies from the University of North Dakota, and a Bachelor of Journalism from Canada's Carleton University. Her latest book, NASA Leadership Moments, is co-written with astronaut Dave Williams. Elizabeth first got interested in space after watching the movie Apollo 13 in 1996, and still wants to be an astronaut someday.
"We still have work to do, but we are increasingly pleased with the results we’re seeing," Lee Feinberg, optical telescope element manager for Webb at NASA's Goddard Space Flight Center in Greenbelt, Maryland, said in the same statement."Years of planning and testing are paying dividends, and the team could not be more excited to see what the next few weeks and months bring."star rendered 18 times.
Engineers made minor adjustments to the main mirror and changed the alignment of Webb's secondary mirror. These repositionings were key to"overlapping the light from all the mirrors so that they can work in unison," Webb officials said in the update. During the image stacking stage, individual segment images are moved so they produce one unified image instead of 18 separate images. In this image, all 18 segments are stacked on top of each other. After future alignment steps, the image will be even sharper.
Then the third stage, image stacking, saw the focused dots reflected by each mirror stacked on top of one another. Photons of light from the individual segments were each rendered to the same location of a sensor on the telescope's near-infrared mirror . "The team activated sets of six mirrors at a time and commanded them to repoint their light to overlap, until all dots of starlight overlapped with each other," Webb officials said of image stacking.Related stories:
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