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Comparing realtime optical gain measurement and methods on MagAO-X — arXiv:2608.10539

Source: arXiv (en)
Original: https://arxiv.org/abs/2608.10539
License (as archived): CC0-1.0
Archived: 2026-10-19T06:41:42.533Z
SHA-256 of the archived text: 9bd922f633c6ea0563a4fe6816962d8ffdbf638bc69ef9631c3b2f5823fa6a8b
Stable URL of this page: https://metraipolis.com/documento/dc_fc7fdedd6547

How to cite

Comparing realtime optical gain measurement and methods on MagAO-X — arXiv:2608.10539 — arXiv (en), https://arxiv.org/abs/2608.10539 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_fc7fdedd6547 (Metraipolis archive dc_fc7fdedd6547, sha256 9bd922f633c6ea0563a4fe6816962d8ffdbf638bc69ef9631c3b2f5823fa6a8b)

BibTeX

@misc{dcfc7fdedd6547,
  title = {Comparing realtime optical gain measurement and methods on MagAO-X — arXiv:2608.10539},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2608.10539},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_fc7fdedd6547; sha256 9bd922f633c6ea0563a4fe6816962d8ffdbf638bc69ef9631c3b2f5823fa6a8b},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2608.10539. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

A lingering technical challenge for pyramid wavefront sensors (PyWFS) is their change in response between calibration and correction residuals, a quantity known as optical gain (OG). Given the prevalent use of PyWFSs in current and planned high contrast adaptive optics (AO), understanding and reliably measuring OG for realtime control unlocks advanced correction and post processing techniques. The OG quantity as an unknown inhibits a system's ability to stably correct non common path errors, reconstructing wavefronts, and PSF reconstruction. This work compares kinds of optical gain measurement techniques on MagAO-X, a visible light extreme AO instrument on the 6.5m Magellan Clay telescope. We present a set of on-sky measurements of OG across three techniques: 1) An on-sky calibration that acquires OG per spatial mode, 2) realtime measurements of the instantaneous Strehl Ratio (SR) on the pyramid tip, and 3) realtime measurement of known, high-frequency probe signal on the WFS itself. We compare these on-sky results with performance diagnostics to asses how faithfully OG is returned. We conclude with future steps for active control of OG on MagAO-X.

Tema degli esploratori: fisica e astronomia (retro-catalogo arXiv: annunci del 2026-08-12 in astro-ph.IM).
Categorie arXiv: Instrumentation and Methods for Astrophysics (astro-ph.IM).
Pagina del lavoro: https://arxiv.org/abs/2608.10539 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-10-19T06:37:00.853Z dalla pagina https://arxiv.org/catchup/astro-ph.IM/2026-08-12?abs=True (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).