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

Benjamin L. Gerard; Dominic F. Sanchez; Aditya R. Sengupta; Chris Ratliff; Sylvain Cetre; Elinor Gates; Daren Dillon; Bautista Fernandez; Brian Bauman; Lisa Poyneer; Aaron Lemmer; Rebecca Jensen-Clem; Phillip Hinz; Bruce Macintosh

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

Instrumentation and Methods for Astrophysics 2026-07-31 v1

Authors: Benjamin L. Gerard , Dominic F. Sanchez , Aditya R. Sengupta , Chris Ratliff , Sylvain Cetre , Elinor Gates , Daren Dillon , Bautista Fernandez , Brian Bauman , Lisa Poyneer , Aaron Lemmer , Rebecca Jensen-Clem , Phillip Hinz , Bruce Macintosh

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Abstract

REDWOODS is a new sub-testbed within the Shane Adaptive Optics (AO) system at Lick observatory, developed to test second stage AO wavefront sensing and control technologies, including a Self-Coherent Camera with optional broadband Wynne corrector, two different three-sided fully reflective highly broadband pyramid wavefront sensor modes, and multi-wavefront sensor single conjugate AO control. We present project results to date, including on-sky data.

Keywords

adaptive optics wavefront sensing control Lick observatory Shane AO second stage AO

Cite

@article{arxiv.2607.28913,
  title  = {On-sky results from REDWOODS, a platform at Lick/ShaneAO for testing second stage AO technologies},
  author = {Benjamin L. Gerard and Dominic F. Sanchez and Aditya R. Sengupta and Chris Ratliff and Sylvain Cetre and Elinor Gates and Daren Dillon and Bautista Fernandez and Brian Bauman and Lisa Poyneer and Aaron Lemmer and Rebecca Jensen-Clem and Phillip Hinz and Bruce Macintosh},
  journal= {arXiv preprint arXiv:2607.28913},
  year   = {2026}
}

Comments

Proceeding for SPIE Astronomical Telescopes and Instrumentation 2026, Adaptive Optics Session, Paper No. 14150-89