Increasing the useful field-of-view of an adaptive optics system

Mark R. Chun, Walter J. Wild, Fang Shi, Michael F. Smutko, Edward J. Kibblewhite, Robert Q. Fugate, Julian C. Christou

Research output: Contribution to journalConference articlepeer-review


The size of the corrected field of view of an adaptive optics system is though to be a severe limitation on the usefulness of an adaptive optics system. We show that under good seeing conditions the useful field of view is an order of magnitude larger than the field predicted by the classical isoplanatic angle. The corrected field of view is experimentally shown to increase when using spatially degraded wavefront corrections. Two methods of spatially degrading the wavefront were tested: low-order modal wavefront reconstructions and the use of a low-altitude Rayleigh wavefront reference beacon. In both cases the on- axis performance is sacrificed for an increased field of view.

Original languageEnglish (US)
Pages (from-to)384-390
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1998
EventAdaptive Optical System Technologies - Kona, HI, United States
Duration: Mar 23 1998Mar 23 1998


  • Isoplanatic angle
  • Modal correction
  • Rayleigh guide star

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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