Eye movements present during acquisition of a retinal image with optical coherence tomography (OCT) introduce
motion artifacts into the image, complicating analysis and registration. This effect is especially pronounced in highresolution
data sets acquired with adaptive optics (AO)-OCT instruments. Several retinal tracking systems have been
introduced to correct retinal motion during data acquisition. We present a method for correcting motion artifacts in AOOCT
volume data after acquisition using simultaneously captured adaptive optics-scanning laser ophthalmoscope (AOSLO)
images. We extract transverse eye motion data from the AO-SLO images, assign a motion adjustment vector to
each AO-OCT A-scan, and re-sample from the scattered data back onto a regular grid. The corrected volume data
improve the accuracy of quantitative analyses of microscopic structures.
In this paper we present a mathematical model for a point-actuated, continuous facesheet deformable mirror. The model consists of a single partial differential equation for the facesheet coupled with a number of nonlinear algebraic constraints (one constraint per actuator). We also present a nonlinearly constrained quadratic minimization problem whose solution gives the quasi-steady state control for the mirror, given a target wavefront aberration.
In this paper we present a Fourier-domain preconditioned conjugate gradient algorithm for the fitting step in Multi-Conjugate Adaptive Optics (MCAO) for extremely large telescopes. This algorithm is fast and robust, and it is convenient to implement with parallel processing in a real-time system. Simulation results are presented for an MCAO system for a 30-meter telescope with 2 deformable mirrors.
In this paper, we provide an overview of the adaptive optics (AO) program for the Thirty Meter Telescope (TMT) project, including an update on requirements; the philosophical approach to developing an overall AO system architecture; the recently completed conceptual designs for facility and instrument AO systems; anticipated first light capabilities and upgrade options; and the hardware, software, and controls interfaces with the remainder of the observatory. Supporting work in AO component development, lab and field tests, and simulation and analysis is also discussed. Further detail on all of these subjects may be found in additional papers in this conference.