Nasa begin months-long effort to focus James Webb space telescope

The James Webb space telescope in Houston before being launched into space. Photograph: Chris Gunn/Nasa/AFP/Getty Images

The James Webb space telescope in Houston before being launched into space. Photograph: Chris Gunn/Nasa/AFP/Getty Images

source https://www.theguardian.com/science/2022/jan/13/nasa-begin-months-long-effort-to-bring-james-webb-space-telescope-into-focus