The successor to Hubble is halfway through aligning its mirrors. 🔭 engineering
An enticing image of a star
“We still have work to do, but we are increasingly pleased with the results we’re seeing,” said in the statement Lee Feinberg, optical telescope element manager for Webb at NASA’s Goddard Space Flight Center. “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.”
The new image released is Webb's first-ever “stacked” picture of the star HD 84406 and it gives an idea of how sharp the telescope's eye will be once it has reached its final form. The term"stacked" refers to the shape and processes the telescope had to undertake in order to produce the image. process called Segment Alignment. This is when all 18 of Webb’s beryllium and gold-coated mirror segments are carefully placed into alignment with one another.
The next step is called Image Stacking and is where the term"stacked" came from. In this process, the engineers activated sets of six mirrors at a time and commanded them to repoint their light to overlap. Once all these steps had been completed, NASA was able to produce an image of the faraway star by using Webb’s primary science instrument: the NIRCam.What is next for the powerful telescope? The tool has just undergone stages two and three of a seven-step process that aims to fully align the telescope’s mirrors and get all 18 segments functioning as one unit.As the Webb Telescope completes each next phase, the images it will produce will become clearer and clearer, as never seen before.
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