Design of the adaptive optics systems for GMT

Michael Lloyd-Hart, Roger Angel, N. Mark Milton, Matt Rademacher, Johanan Codona

Research output: Chapter in Book/Report/Conference proceedingConference contribution

29 Scopus citations


The Giant Magellan Telescope (GMT) includes adaptive optics (AO) as an integral component of its design. Planned scientific applications of AO span an enormous parameter space: wavelengths from 1 to 25 μm, fields of view from 1 arcsec to 8 arcmin, and contrast ratio as high as 10 9. The integrated systems are designed about common core elements. The telescope's Gregorian adaptive secondary mirror, with seven segments matched to the primary mirror segments, will be used for wavefront correction in all AO modes, providing for high throughput and very low background in the thermal infrared. First light with AO will use wavefront reconstruction from a constellation of six continuous-wave sodium laser guide stars to provide ground-layer correction over 8 arcmin and diffraction-limited correction of small fields. Natural guide stars will be used for classical AO and high contrast imaging. The AO system is configured to feed both the initial instrument suite and ports for future expansion.

Original languageEnglish (US)
Title of host publicationAdvances in Adaptive Optics II
StatePublished - 2006
EventAdvances in Adaptive Optics II - Orlando, FL, United States
Duration: May 24 2006May 31 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6272 I
ISSN (Print)0277-786X


OtherAdvances in Adaptive Optics II
Country/TerritoryUnited States
CityOrlando, FL


  • Adaptive optics
  • Extremely large telescopes
  • Giant Magellan Telescope
  • Tomography

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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