Giant Magellan Telescope Adaptive Optics Overview

Antonin H. Bouchez; Laird M. Close; Rodolphe Conan; Richard Demers; Simone Esposito; Frank Groark; Jared Males; Brian A. McLeod; Fernando Quirós-Pacheco; Rob Sharp; Breann N. Sitarski; Peter Thompson; Marcos A. van Dam

Giant Magellan Telescope Adaptive Optics Overview

Antonin H. Bouchez, Laird M. Close, Rodolphe Conan, Richard Demers, Simone Esposito, Frank Groark, Jared Males, Brian A. McLeod, Fernando Quirós-Pacheco, Rob Sharp, Breann N. Sitarski, Peter Thompson, Marcos A. van Dam

Astronomy

Research output: Contribution to conference › Paper › peer-review

1 Scopus citations

Abstract

The 25.4 m diameter Giant Magellan Telescope will have four first-generation observing modes: Natural seeing, ground-layer AO, natural guide star AO, and laser tomography AO. These control modes are enabled by a suite of wavefront sensors and metrology systems that provide feedback to a segmented active primary mirror and a segmented adaptive secondary mirror. There have been several changes made to the GMT AO design since the last conference. The Natural Guide Star Wavefront Sensor now incorporates both a pyramid wavefront sensor for high-order sensing and a Holographic Dispersed Fringe Sensor to increase the segment piston sensing dynamic range. The On-Instrument Wavefront Sensors of the GMTNIRS and GMTIFS instruments have been further developed and now include real-time phase retrieval to sense segment piston errors at high frame rate. We are developing laboratory optical testbeds and prototype wavefront sensors to validate active optics and AO algorithms. We are also fabricating the first off-axis adaptive secondary mirror segment to retire fabrication risk and verify its performance.

Original language	English (US)
State	Published - 2023
Event	7th Adaptive Optics for Extremely Large Telescopes Conference, AO4ELT7 2023 - Avignon, France Duration: Jun 25 2023 → Jun 30 2023

Conference

Conference	7th Adaptive Optics for Extremely Large Telescopes Conference, AO4ELT7 2023
Country/Territory	France
City	Avignon
Period	6/25/23 → 6/30/23

Keywords

Extremely Large Telescopes
Laser Guide Stars
Segment Phasing
Wavefront Sensing

ASJC Scopus subject areas

Space and Planetary Science
Control and Systems Engineering
Mechanical Engineering
Electronic, Optical and Magnetic Materials
Astronomy and Astrophysics
Instrumentation

Cite this

@conference{16f0cbc72f3841fa83e9de27fc6c9bc7,

title = "Giant Magellan Telescope Adaptive Optics Overview",

abstract = "The 25.4 m diameter Giant Magellan Telescope will have four first-generation observing modes: Natural seeing, ground-layer AO, natural guide star AO, and laser tomography AO. These control modes are enabled by a suite of wavefront sensors and metrology systems that provide feedback to a segmented active primary mirror and a segmented adaptive secondary mirror. There have been several changes made to the GMT AO design since the last conference. The Natural Guide Star Wavefront Sensor now incorporates both a pyramid wavefront sensor for high-order sensing and a Holographic Dispersed Fringe Sensor to increase the segment piston sensing dynamic range. The On-Instrument Wavefront Sensors of the GMTNIRS and GMTIFS instruments have been further developed and now include real-time phase retrieval to sense segment piston errors at high frame rate. We are developing laboratory optical testbeds and prototype wavefront sensors to validate active optics and AO algorithms. We are also fabricating the first off-axis adaptive secondary mirror segment to retire fabrication risk and verify its performance.",

keywords = "Extremely Large Telescopes, Laser Guide Stars, Segment Phasing, Wavefront Sensing",

author = "Bouchez, {Antonin H.} and Close, {Laird M.} and Rodolphe Conan and Richard Demers and Simone Esposito and Frank Groark and Jared Males and McLeod, {Brian A.} and Fernando Quir{\'o}s-Pacheco and Rob Sharp and Sitarski, {Breann N.} and Peter Thompson and {van Dam}, {Marcos A.}",

note = "Publisher Copyright: {\textcopyright} 2023 7th Adaptive Optics for Extremely Large Telescopes Conference, AO4ELT7 2023. All rights reserved.; 7th Adaptive Optics for Extremely Large Telescopes Conference, AO4ELT7 2023 ; Conference date: 25-06-2023 Through 30-06-2023",

year = "2023",

language = "English (US)",

}

TY - CONF

T1 - Giant Magellan Telescope Adaptive Optics Overview

AU - Bouchez, Antonin H.

AU - Close, Laird M.

AU - Conan, Rodolphe

AU - Demers, Richard

AU - Esposito, Simone

AU - Groark, Frank

AU - Males, Jared

AU - McLeod, Brian A.

AU - Quirós-Pacheco, Fernando

AU - Sharp, Rob

AU - Sitarski, Breann N.

AU - Thompson, Peter

AU - van Dam, Marcos A.

PY - 2023

Y1 - 2023

N2 - The 25.4 m diameter Giant Magellan Telescope will have four first-generation observing modes: Natural seeing, ground-layer AO, natural guide star AO, and laser tomography AO. These control modes are enabled by a suite of wavefront sensors and metrology systems that provide feedback to a segmented active primary mirror and a segmented adaptive secondary mirror. There have been several changes made to the GMT AO design since the last conference. The Natural Guide Star Wavefront Sensor now incorporates both a pyramid wavefront sensor for high-order sensing and a Holographic Dispersed Fringe Sensor to increase the segment piston sensing dynamic range. The On-Instrument Wavefront Sensors of the GMTNIRS and GMTIFS instruments have been further developed and now include real-time phase retrieval to sense segment piston errors at high frame rate. We are developing laboratory optical testbeds and prototype wavefront sensors to validate active optics and AO algorithms. We are also fabricating the first off-axis adaptive secondary mirror segment to retire fabrication risk and verify its performance.

AB - The 25.4 m diameter Giant Magellan Telescope will have four first-generation observing modes: Natural seeing, ground-layer AO, natural guide star AO, and laser tomography AO. These control modes are enabled by a suite of wavefront sensors and metrology systems that provide feedback to a segmented active primary mirror and a segmented adaptive secondary mirror. There have been several changes made to the GMT AO design since the last conference. The Natural Guide Star Wavefront Sensor now incorporates both a pyramid wavefront sensor for high-order sensing and a Holographic Dispersed Fringe Sensor to increase the segment piston sensing dynamic range. The On-Instrument Wavefront Sensors of the GMTNIRS and GMTIFS instruments have been further developed and now include real-time phase retrieval to sense segment piston errors at high frame rate. We are developing laboratory optical testbeds and prototype wavefront sensors to validate active optics and AO algorithms. We are also fabricating the first off-axis adaptive secondary mirror segment to retire fabrication risk and verify its performance.

KW - Extremely Large Telescopes

KW - Laser Guide Stars

KW - Segment Phasing

KW - Wavefront Sensing

UR - http://www.scopus.com/inward/record.url?scp=85206086424&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85206086424&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:85206086424

T2 - 7th Adaptive Optics for Extremely Large Telescopes Conference, AO4ELT7 2023

Y2 - 25 June 2023 through 30 June 2023

ER -

Giant Magellan Telescope Adaptive Optics Overview

Abstract

Conference

Keywords

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this