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 ...

The mirrors and instruments working together will enable the huge observatory's science observations. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

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 ...

The seven-phase project is expected to take three months. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The James Webb Space Telescope ...

Figuring out how to set up a telescope is your first step to exploring the heavens and observing the night sky. The most common types of telescope for your average hobbyist are reflector, refractor ...