✨ Our NIRCam instrument's detectors saw their 1st photons of starlight! While #NASAWebb is not yet ready for science, this is the first of many steps to capture images that are at first unfocused, used to slowly fine-tune the optics: https://t.co/Sak6r7Ncex #UnfoldTheUniverse pic.twitter.com/vHRX8x9ki2

— NASA Webb Telescope (@NASAWebb) February 3, 2022