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18 July 1999 High-order adaptive optics system with a high-density spherical membrane deformable mirror
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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 images in visible light and for high contrast imaging with a coronagraph in the near IR. 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 test the support and assembly techniques is being built for lab test and will be tested in a closed loop adaptive optics system at the Steward Observatory.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Maud P. Langlois, James Roger P. Angel, Michael Lloyd-Hart, Stephen M. Miller III, and George Z. Angeli "High-order adaptive optics system with a high-density spherical membrane deformable mirror", Proc. SPIE 3762, Adaptive Optics Systems and Technology, (18 July 1999);

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