@inproceedings{3de4475a432f46dfb16d5d5591a8fbc3,
title = "High-contrast imaging at first-light of the GMT: the wavefront sensing and control architecture of GMagAO-X",
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{\textquoteright}s broad wavelength range and the large 25-meter aperture of the GMT creates new challenges: control of all 21.000 actuators; phasing GMT{\textquoteright}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 (WFS&C). 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 WFS&C strategies for GMagAO-X that address the challenges posed by the first high-contrast imaging system on the ELTs.",
keywords = "Coronagraphy, exoplanets, integrated wavefront sensing and coronagraphy, phase induced amplitude apodization complex mask coronagraph, PIAACMC, Zernike wavefront sensor",
author = "Haffert, {Sebastiaan Y.} and Males, {Jared R.} and Close, {Laird M.} and Kautz, {Maggie Y.} and Olivier Durney and Olivier Guyon",
note = "Publisher Copyright: {\textcopyright} 2024 SPIE.; Adaptive Optics Systems IX 2024 ; Conference date: 16-06-2024 Through 22-06-2024",
year = "2024",
doi = "10.1117/12.3020623",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Jackson, {Kathryn J.} and Dirk Schmidt and Elise Vernet",
booktitle = "Adaptive Optics Systems IX",
}