title: Experimental validation of single-iteration multigrid wavefront reconstruction at the Palomar Observatory.
abstract: Single-iteration multigrid (SIMG) wavefront reconstruction schemes were implemented and validated on the adaptive optics system at the Hale 5.1 m telescope at the Palomar Observatory. Results indicate that even the simplest such method produces a performance indistinguishable from that of the standard least-squares reconstructor for both bright and dim guide stars. SIMG provides a dramatic reduction in computational cost when compared to vector-matrix multiplication and can be implemented in parallel, making it the obvious choice for reconstruction in future large-scale adaptive optics systems.
authors.affiliation: Department of Aeronautics, Stanford University, 496 Lomita Mall, Stanford, CA 94305, USA. lessard@stanford.edu
authors.forename: Laurent
authors.initials: L
authors.lastname: Lessard
authors.forename: Douglas
authors.initials: D
authors.lastname: MacMynowski
authors.forename: Matthew
authors.initials: M
authors.lastname: West
authors.forename: Antonin
authors.initials: A
authors.lastname: Bouchez
authors.forename: Sanjay
authors.initials: S
authors.lastname: Lall