A "selfie" taken by the James Webb Space telescope during the early stages of calibration process. NASA SHARE Focusing a six-ton, $10 billion space telescope isn’t as simple as turning the focus ring ...

How to align a telescope A ‘go-to’ telescope needs to know exactly where it is for its software to know what to point at.

Some telescopes now have built-in GPS. How to align a telescope A ‘go-to’ telescope needs to know exactly where it is for its software to know what to point at.

ABSTRACT.The optical alignment of the Large Synoptic Survey Telescope (LSST) is potentially challenging, due to its fast three-mirror optical design and its large 3.5° field of view (FOV). It is ...

Several instruments are preparing to help the James Webb Space Telescope with its mirror alignment and future observations, with several key steps achieved in recent days, according to NASA.

BALTIMORE (WJZ) --The James Webb Space Telescope team is nearly halfway through commissioning the observatory's four science instruments, the National Aeronautics and Space Administration said ...