1. Keck telescope primary mirror segments: initial alignment and active control;Chanan,1988
2. Overview of the performance of the W. M. Keck Observatory;Nelson,1994
3. The 42m European ELT: status;Gilmozzi,2008
4. Status of the James Webb Space Telescope observatory;Clampin,2012
5. Phasing the mirror segments of the Keck telescopes II: the narrow-band phasing algorithm