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High-contrast imaging at first-light of the GMT: the wavefront sensing and control architecture of GMagAO-X

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Sebastiaan Y. Haffert, Jared R Males, Laird M. Close, Maggie Y. Kautz, Olivier Durney, Olivier Guyon

Instrumentation and Methods for Astrophysics · Submitted 17 Jul 2024

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim We will discuss the key components of the WFSC strategies for GMagAO-X that address the challenges posed by the first high-contrast imaging system on the ELTs.

how it is stated · asserted 0.82 read the record →

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arXiv ID2407.13021 (version 1)
Pith IDCAAEYLUS, Pith's permanent record of this paper and its review
CitationJared R Males, Laird M. Close, Maggie Y. Kautz, Olivier Durney, Olivier Guyon, Sebastiaan Y. Haffert. "High-contrast imaging at first-light of the GMT: the wavefront sensing and control architecture of GMagAO-X." arXiv:2407.13021 (2024). https://pith.science/paper/CAAEYLUS
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The compiled record

The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

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Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 5,743 input tokens.

What the abstract itself states, as probabilities: claims first 0.84 · states limitation 0.09 · human participants 0.02 · controlled comparison 0.02 · randomized assignment 0.01 · states quantitative result 0.45 · compares with prior results 0.05 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v1. Results and the main claim are underlined; .

The Giant Magellan Adaptive Optics eXtreme (GMagAO-X) instrument is a first-light high-contrast imaging instrument for the Giant Magellan Telescope (GMT). GMagAO-X's broad wavelength range and the large 25-meter aperture of the GMT creates new challenges: control of all 21.000 actuators; phasing GMT's segmented primary mirror to nm levels; active control of atmospheric dispersion to sub milli-arcsecond residuals; no chromatic pupil shear to minimize chromatic compensation errors; integrated focal plane wavefront sensing and control (WFSC). GMagAO-X will have simultaneous visible and infra-red WFS channels to control the 21.000 actuator DM. The infra-red arm will be flexible by incorporating switchable sensors such as the pyramid or Zernike WFS. One innovation that we developed for GMagAO-X is the Holographic Dispersed Fringe Sensor that measures differential piston. We have also developed several integrated coronagraphic wavefront sensors to control non-common path aberrations exactly where we need to sense them. We will discuss the key components of the WFSC strategies for GMagAO-X that address the challenges posed by the first high-contrast imaging system on the ELTs.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#sentencerolethe authors' own workstates the main conclusionstrength
s0 The Giant Magellan Adaptive Optics eXtreme (GMagAO-X) instrument is a first-light high-contrast imaging instrument for the Giant Magellan Telescope (GMT). contribution 0.50 0.14 0.07 asserted 1.00
s1 GMagAO-X's broad wavelength range and the large 25-meter aperture of the GMT creates new challenges: control of all 21.000 actuators; phasing GMT's segmented primary mirror to nm levels; active control of atmospheric dispersion to sub milli-arcsecond residuals; no chromatic pupil shear to minimize chromatic compensation errors; integrated focal plane wavefront sensing and control (WFSC). background 0.95 0.11 0.07 asserted 0.99
s2 GMagAO-X will have simultaneous visible and infra-red WFS channels to control the 21.000 actuator DM. method 0.95 0.18 0.06 asserted 0.90
s3 The infra-red arm will be flexible by incorporating switchable sensors such as the pyramid or Zernike WFS. method 0.91 0.32 0.03 asserted 0.87
s4 One innovation that we developed for GMagAO-X is the Holographic Dispersed Fringe Sensor that measures differential piston. contribution 0.99 0.94 0.06 asserted 1.00
s5 We have also developed several integrated coronagraphic wavefront sensors to control non-common path aberrations exactly where we need to sense them. contribution 0.98 0.93 0.07 asserted 1.00
s6 We will discuss the key components of the WFSC strategies for GMagAO-X that address the challenges posed by the first high-contrast imaging system on the ELTs. contribution 0.66 0.33 0.17 asserted 0.82

What kind of paper the classifier reports this is: method or tool 1.00 · evidence from argument 0.96.

What was examined, and what was not

sources read
  • arXiv listing abstract v1
not examined
  • full text
  • figures and tables
  • references and citing sentences
  • relations to other papers
levels run
  • P abstract
not run
  • S sections
  • T body sentences
  • C citations
  • R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper
Original abstract

The Giant Magellan Adaptive Optics eXtreme (GMagAO-X) instrument is a first-light high-contrast imaging instrument for the Giant Magellan Telescope (GMT). GMagAO-X's broad wavelength range and the large 25-meter aperture of the GMT creates new challenges: control of all 21.000 actuators; phasing GMT's segmented primary mirror to nm levels; active control of atmospheric dispersion to sub milli-arcsecond residuals; no chromatic pupil shear to minimize chromatic compensation errors; integrated focal plane wavefront sensing and control (WFSC). GMagAO-X will have simultaneous visible and infra-red WFS channels to control the 21.000 actuator DM. The infra-red arm will be flexible by incorporating switchable sensors such as the pyramid or Zernike WFS. One innovation that we developed for GMagAO-X is the Holographic Dispersed Fringe Sensor that measures differential piston. We have also developed several integrated coronagraphic wavefront sensors to control non-common path aberrations exactly where we need to sense them. We will discuss the key components of the WFSC strategies for GMagAO-X that address the challenges posed by the first high-contrast imaging system on the ELTs.

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What this paper does with the arXiv papers it cites

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

What it cites

Cites as background 1 paper
  • Direct imaging of Earth-like exoplanets is one of the key science goals of the upcoming ground-based telescopes like the Giant Magellan Telescope (GMT) and the European Extremely Large Telescope (ELT) [ref] .

    PCS -- A Roadmap for Exoearth Imaging with the ELT · INTRODUCTION · 0.89

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