The Optical and Mechanical Design for the 21,000 Actuator ExAO System for the Giant Magellan Telescope: GMagAO-X

Laird M. Close; Jared R. Males; Olivier Durney; Fernando Coronado; Sebastiaan Y. Haffert; Victor Gasho; Alexander Hedglen; Maggie Y. Kautz; Tom E. Connors; Mark Sullivan; Olivier Guyon; Jamison Noenickx

doi:10.1117/12.2629553

The Optical and Mechanical Design for the 21,000 Actuator ExAO System for the Giant Magellan Telescope: GMagAO-X

Laird M. Close, Jared R. Males, Olivier Durney, Fernando Coronado, Sebastiaan Y. Haffert, Victor Gasho, Alexander Hedglen, Maggie Y. Kautz, Tom E. Connors, Mark Sullivan, Olivier Guyon, Jamison Noenickx

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

8 Scopus citations

Abstract

GMagAO-X is the ExAO coronagraphic instrument for the 25.4m GMT. It is designed for a slot on the folded port of the GMT. To meet the strict ExAO fitting and servo error requirement (<90nm rms WFE), GMagAO-X must have 21,000 actuator DM capable of ≥2KHz correction speeds. To minimize wavefront/segment piston error GMagAO-X has an interferometric beam combiner on a vibration isolated table, as part of this “21,000 actuator parallel DM”. Piston errors are sensed by a Holographic Dispersed Fringe Sensor (HDFS). In addition to a coronagraph, it has a post-coronagraphic Low Order WFS (LLOWFS) to sense non-common path (NCP) errors. The LLOWFS drives a non-common path DM (NCP DM) to correct those NCP errors. GMagAO-X obtains high-contrast science and wavefront sensing in the visible and/or the NIR. Here we present our successful externally reviewed (Sept. 2021) CoDR optical-mechanical design that satisfies GMagAO-X's top-level science requirements and is compliant with the GMT instrument requirements and only requires COTS parts.

Original language	English (US)
Title of host publication	Adaptive Optics Systems VIII
Editors	Laura Schreiber, Dirk Schmidt, Elise Vernet
Publisher	SPIE
ISBN (Electronic)	9781510653511
DOIs	https://doi.org/10.1117/12.2629553
State	Published - 2022
Event	Adaptive Optics Systems VIII 2022 - Montreal, Canada Duration: Jul 17 2022 → Jul 22 2022

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	12185
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Adaptive Optics Systems VIII 2022
Country/Territory	Canada
City	Montreal
Period	7/17/22 → 7/22/22

Keywords

adaptive optics
coronagraphs
deformable mirrors
exoplanets
high-contrast imaging
wavefront sensing

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2629553

Cite this

Close, L. M., Males, J. R., Durney, O., Coronado, F., Haffert, S. Y., Gasho, V., Hedglen, A., Kautz, M. Y., Connors, T. E., Sullivan, M., Guyon, O., & Noenickx, J. (2022). The Optical and Mechanical Design for the 21,000 Actuator ExAO System for the Giant Magellan Telescope: GMagAO-X. In L. Schreiber, D. Schmidt, & E. Vernet (Eds.), Adaptive Optics Systems VIII Article 1218524 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12185). SPIE. https://doi.org/10.1117/12.2629553

The Optical and Mechanical Design for the 21,000 Actuator ExAO System for the Giant Magellan Telescope: GMagAO-X. / Close, Laird M.; Males, Jared R.; Durney, Olivier et al.
Adaptive Optics Systems VIII. ed. / Laura Schreiber; Dirk Schmidt; Elise Vernet. SPIE, 2022. 1218524 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12185).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Close, LM, Males, JR, Durney, O, Coronado, F, Haffert, SY, Gasho, V, Hedglen, A, Kautz, MY, Connors, TE, Sullivan, M, Guyon, O & Noenickx, J 2022, The Optical and Mechanical Design for the 21,000 Actuator ExAO System for the Giant Magellan Telescope: GMagAO-X. in L Schreiber, D Schmidt & E Vernet (eds), Adaptive Optics Systems VIII., 1218524, Proceedings of SPIE - The International Society for Optical Engineering, vol. 12185, SPIE, Adaptive Optics Systems VIII 2022, Montreal, Canada, 7/17/22. https://doi.org/10.1117/12.2629553

Close LM, Males JR, Durney O, Coronado F, Haffert SY, Gasho V et al. The Optical and Mechanical Design for the 21,000 Actuator ExAO System for the Giant Magellan Telescope: GMagAO-X. In Schreiber L, Schmidt D, Vernet E, editors, Adaptive Optics Systems VIII. SPIE. 2022. 1218524. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2629553

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abstract = "GMagAO-X is the ExAO coronagraphic instrument for the 25.4m GMT. It is designed for a slot on the folded port of the GMT. To meet the strict ExAO fitting and servo error requirement (<90nm rms WFE), GMagAO-X must have 21,000 actuator DM capable of ≥2KHz correction speeds. To minimize wavefront/segment piston error GMagAO-X has an interferometric beam combiner on a vibration isolated table, as part of this “21,000 actuator parallel DM”. Piston errors are sensed by a Holographic Dispersed Fringe Sensor (HDFS). In addition to a coronagraph, it has a post-coronagraphic Low Order WFS (LLOWFS) to sense non-common path (NCP) errors. The LLOWFS drives a non-common path DM (NCP DM) to correct those NCP errors. GMagAO-X obtains high-contrast science and wavefront sensing in the visible and/or the NIR. Here we present our successful externally reviewed (Sept. 2021) CoDR optical-mechanical design that satisfies GMagAO-X's top-level science requirements and is compliant with the GMT instrument requirements and only requires COTS parts.",

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The Optical and Mechanical Design for the 21,000 Actuator ExAO System for the Giant Magellan Telescope: GMagAO-X

Abstract

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Conference

Keywords

ASJC Scopus subject areas

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