High order adaptive optics system with a high density spherical membrane deformable mirror

M. P. Langlois, J. P.R. Angel, M. Lloyd-Hart, S. Miller, G. Angeli

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations


We have designed a new type of curved deformable mirror with 3000 actuators. It will be used at the 6.5 m MMT telescope in an adaptive optics system to correct the wavefront on a scale of 12 cm, for diffraction limited changes in visible light (0.02 arcsec) and for high contrast imaging with a coronagraph in the near infrared. The mirror's 51 cm diameter glass faceplate, 400 microns thick, will be actuated by tubular piezoceramic actuators on 8 mm centers. The mirror is made concave so it can be used in a simple, compact optical relay with no need for large collimator or camera elements. A prototype deformable mirror with 300 elements that tests the support and assembly techniques is being built for lab tests and will be tested in a closed loop adaptive optics system at the Steward Observatory 2.3m telescope.

Original languageEnglish (US)
Pages (from-to)50-57
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1999
EventProceedings of the 1999 Adaptive Optics Systems and Technology - Denver, CO, USA
Duration: Jul 21 1999Jul 22 1999

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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