Jupyter simulations Using NGS Intensity with PyWFS for REDWOODS

2025/08/19 by Joel Hurtado, Benjamin L. Gerard, Hurtado, Joel +5 · 1 citation
Engineering · Physics and Astronomy · #Vibration and Dynamic Analysis #Electromagnetic Scattering and Analysis #Electromagnetic Simulation and Numerical Methods

paper · pdf · doi:10.48550/arxiv.2508.14256

Abstract

REDWOODS on ShaneAO at Lick Observatory implements a second-stage, 3-sided reflective pyramid wavefront sensor (PWFS), which, under low-light conditions, offers an improved signal-to-noise ratio for deformable mirror commands to correct dynamic atmospheric aberrations. We modeled the REDWOODS limiting natural guide star magnitude. We also investigated performance tradeoffs between two PWFS modes that are available to REDWOODS, one with higher bandwidth error and another with higher aliasing error. We also implemented an experimental setup to image one of the REDWOODS PWFS masks.

Citations

• Developments on LLNL's high contrast testbed and Lick/ShaneAO

Cited by

• On-sky results from REDWOODS, a platform at Lick/ShaneAO for testing second stage AO technologies

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