English

Event-based Detectors for Laser Guide Star Tip-Tilt Sensing

Instrumentation and Methods for Astrophysics 2025-04-10 v2

Abstract

Event-based sensors detect only changes in brightness across a scene, with each pixel producing an asynchronous stream of spatial-temporal data, rather than recording frames of overall illumination such as a traditional frame-based sensor. This is advantageous for implementing into a wavefront sensor, which benefits from high temporal resolution and high dynamic range. The determination of tip-tilt in particular is still a problem in laser guide star (LGS) adaptive optics as there are no current technological capabilities to measure it. We characterized the behavior of an event-based sensor in the context of tip-tilt sensing, investigating if the high temporal resolution of the event streams could address these challenges. Different conditions of tip-tilt and background illumination levels are explored and found to be a strong contender for tip-tilt sensing with LGSs.

Keywords

Cite

@article{arxiv.2412.11436,
  title  = {Event-based Detectors for Laser Guide Star Tip-Tilt Sensing},
  author = {Monique Cockram and Noelia Martinez Rey},
  journal= {arXiv preprint arXiv:2412.11436},
  year   = {2025}
}

Comments

16 pages, 11 figures

R2 v1 2026-06-28T20:36:21.999Z