(a telescope mirror formed of array of smaller mirrors)
A segmented mirror is a reflector telescope mirror formed
by aligning smaller mirrors (optical segmentation).
Keck was a pioneer. Alignment must be maintained to
a high degree of precision and Adaptive Alignment is
typically performed under computer control.
Example telescopes with segmented mirrors:
Non-segmented (monolithic mirror) examples:
European Extremely Large Telescope (E-ELT)
extremely large telescope (ELT)
Giant Magellan Telescope (GMT)
Giant Segmented Mirror Telescope (GSMT)
Gran Telescopio Canarias (GTC)
Hobby-Eberly Telescope (HET)
mirror support cell
Thirty Meter Telescope (TMT)