One of the most difficult challenges when assembling a telescope is aligning it to optical precision. If you don’t do it correctly, all your images will be fuzzy. This is particularly challenging when you assemble your telescope in space, as the James Webb Space Telescope (JWST) demonstrates.
Brian Koberlein is an astrophysicist and author known for his work in the field of astrophysics and science communication. He writes for various publications, including Universe Today, ScienceAlert, and the National Radio Astronomy Observatory. His articles cover a wide range of topics in astrophysics, from exoplanets and neutron stars to dark matter and the early universe.