5 papers
Subspace Recycling-based Regularization Methods
Ronny Ramlau, Kirk M. Soodhalter, Victoria Hutterer
Subspace recycling techniques have been used quite successfully for the acceleration of iterative methods for solving large-scale linear systems. These methods often work by augmen…
Real-time Adaptive Optics with pyramid wavefront sensors: A theoretical analysis of the pyramid sensor model
Victoria Hutterer, Ronny Ramlau, Iuliia Shatokhina
We consider the mathematical background of the wavefront sensor type that is widely used in Adaptive Optics systems for astronomy, microscopy, and ophthalmology. The theoretical an…
Real-time Adaptive Optics with pyramid wavefront sensors: Accurate wavefront reconstruction using iterative methods
Victoria Hutterer, Ronny Ramlau, Iuliia Shatokhina
In this paper, we address the inverse problem of fast, stable, and high-quality wavefront reconstruction from pyramid wavefront sensor data for Adaptive Optics systems on Extremely…
Non-linear wavefront reconstruction methods for pyramid sensors using Landweber and Landweber-Kaczmarz iteration
Victoria Hutterer, Ronny Ramlau
Accurate and robust wavefront reconstruction methods for pyramid wavefront sensors are in high demand as these sensors are planned to be part of many instruments currently under de…
The MICADO first light imager for the ELT: overview, operation, simulation
Richard Davies, João Alves, Yann Clénet +98
MICADO will enable the ELT to perform diffraction limited near-infrared observations at first light. The instrument's capabilities focus on imaging (including astrometric and high…