Researched
Segmented-Mirror Telescopes
Keck I (1993) joins 36 hexagonal mirror segments, adjusted continuously by computer, into one 10 m mirror.
Open in the interactive tree →Segmenting and actively controlling a mirror removed the size limit of single glass blanks. The same principle carries JWST's 18-segment gold mirror and the planned extremely large telescopes.
Prerequisites
Unlocks
- James Webb Space Telescope2021JWST's mirror is made of actively controlled segments, as pioneered at Keck