title: Low-order adaptive deformable mirror.
abstract: We report the main parameters of a nine-electrode bimorph piezoelectric adaptive mirror designed to correct low-order aberrations. We describe measurements of the control coefficients for defocus, astigmatism, pure coma, and spherical aberration of this mirror and the temperature stability of its profile. The performance of a simple adaptive optical system for imaging through laboratory-generated turbulence is investigated. This low-order device is suitable for small (<1-m-diameter) telescopes and for nonastronomical applications of adaptive optics.
authors.forename: J C
authors.initials: JC
authors.lastname: Dainty
authors.forename: A V
authors.initials: AV
authors.lastname: Koryabin
authors.forename: A V
authors.initials: AV
authors.lastname: Kudryashov