Phasing the Segmented Giant Magellan Telescope: Progress in Testbeds and Prototypes

Richard Demers; Antonin Bouchez; Fernando Quiros-Pacheco; Patricio Schurter; Breann Sitarski; Marcos A. van Dam; Dan Catropa; Jan Kansky; Brian McLeod; Stuart McMuldroch; Bill Podgorski; Laird Close; Victor Gasho; Sebastiaan Haffert; Alex Hedglen; Maggie Kautz; Jared Males; Guido Agapito; Nicolò Azzaroli; Luca Carbonaro; Anne Laure Cheffot; Simone Esposito; Tommaso Lapucci; Enrico Pinna; Cédric Plantet; Alfio Puglisi; Fabio Rossi; Guillermo Gonzalez; Bijan Nemati

doi:10.1117/12.2630144

Phasing the Segmented Giant Magellan Telescope: Progress in Testbeds and Prototypes

Richard Demers, Antonin Bouchez, Fernando Quiros-Pacheco, Patricio Schurter, Breann Sitarski, Marcos A. van Dam, Dan Catropa, Jan Kansky, Brian McLeod, Stuart McMuldroch, Bill Podgorski, Laird Close, Victor Gasho, Sebastiaan Haffert, Alex Hedglen, Maggie Kautz, Jared Males, Guido Agapito, Nicolò Azzaroli, Luca CarbonaroAnne Laure Cheffot, Simone Esposito, Tommaso Lapucci, Enrico Pinna, Cédric Plantet, Alfio Puglisi, Fabio Rossi, Guillermo Gonzalez, Bijan Nemati

Astronomy

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

10 Scopus citations

Abstract

One of the greatest technical challenges of the doubly-segmented Giant Magellan Telescope is the accurate and stable control of segment piston in the diffraction limited observation mode. To address this challenge, in collaboration with the University of Arizona, Smithsonian Astrophysical Observatory and the Istituto Nazionale di Astrofisica, GMTO is executing a project to optimize and validate segment piston control strategies and algorithms using a pair of testbeds. The testbeds provide disturbances to simulate atmospheric turbulence and differential atmospheric dispersion. In addition to the phasing demonstration, the testbeds offer the opportunity to validate hardware designs for the Acquisition & Guiding Wavefront Sensor (AGWS) and the Natural Guide Star Wavefront Sensor (NGWS) and to mitigate their fabrication and assembly risks. Significant progress is reported in the design of the AGWS and NGWS prototypes as well as preliminary test results from the testbeds.

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/10.1117/12.2630144
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
diffraction limited imaging
Giant Magellan Telescope
segment phasing
segmented telescope
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

10.1117/12.2630144

Cite this

Demers, R., Bouchez, A., Quiros-Pacheco, F., Schurter, P., Sitarski, B., van Dam, M. A., Catropa, D., Kansky, J., McLeod, B., McMuldroch, S., Podgorski, B., Close, L., Gasho, V., Haffert, S., Hedglen, A., Kautz, M., Males, J., Agapito, G., Azzaroli, N., ... Nemati, B. (2022). Phasing the Segmented Giant Magellan Telescope: Progress in Testbeds and Prototypes. In L. Schreiber, D. Schmidt, & E. Vernet (Eds.), Adaptive Optics Systems VIII Article 1218518 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12185). SPIE. https://doi.org/10.1117/12.2630144

Phasing the Segmented Giant Magellan Telescope: Progress in Testbeds and Prototypes. / Demers, Richard; Bouchez, Antonin; Quiros-Pacheco, Fernando et al.
Adaptive Optics Systems VIII. ed. / Laura Schreiber; Dirk Schmidt; Elise Vernet. SPIE, 2022. 1218518 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12185).

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

Demers, R, Bouchez, A, Quiros-Pacheco, F, Schurter, P, Sitarski, B, van Dam, MA, Catropa, D, Kansky, J, McLeod, B, McMuldroch, S, Podgorski, B, Close, L, Gasho, V, Haffert, S, Hedglen, A, Kautz, M, Males, J, Agapito, G, Azzaroli, N, Carbonaro, L, Cheffot, AL, Esposito, S, Lapucci, T, Pinna, E, Plantet, C, Puglisi, A, Rossi, F, Gonzalez, G & Nemati, B 2022, Phasing the Segmented Giant Magellan Telescope: Progress in Testbeds and Prototypes. in L Schreiber, D Schmidt & E Vernet (eds), Adaptive Optics Systems VIII., 1218518, 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/10.1117/12.2630144

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abstract = "One of the greatest technical challenges of the doubly-segmented Giant Magellan Telescope is the accurate and stable control of segment piston in the diffraction limited observation mode. To address this challenge, in collaboration with the University of Arizona, Smithsonian Astrophysical Observatory and the Istituto Nazionale di Astrofisica, GMTO is executing a project to optimize and validate segment piston control strategies and algorithms using a pair of testbeds. The testbeds provide disturbances to simulate atmospheric turbulence and differential atmospheric dispersion. In addition to the phasing demonstration, the testbeds offer the opportunity to validate hardware designs for the Acquisition & Guiding Wavefront Sensor (AGWS) and the Natural Guide Star Wavefront Sensor (NGWS) and to mitigate their fabrication and assembly risks. Significant progress is reported in the design of the AGWS and NGWS prototypes as well as preliminary test results from the testbeds.",

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AB - One of the greatest technical challenges of the doubly-segmented Giant Magellan Telescope is the accurate and stable control of segment piston in the diffraction limited observation mode. To address this challenge, in collaboration with the University of Arizona, Smithsonian Astrophysical Observatory and the Istituto Nazionale di Astrofisica, GMTO is executing a project to optimize and validate segment piston control strategies and algorithms using a pair of testbeds. The testbeds provide disturbances to simulate atmospheric turbulence and differential atmospheric dispersion. In addition to the phasing demonstration, the testbeds offer the opportunity to validate hardware designs for the Acquisition & Guiding Wavefront Sensor (AGWS) and the Natural Guide Star Wavefront Sensor (NGWS) and to mitigate their fabrication and assembly risks. Significant progress is reported in the design of the AGWS and NGWS prototypes as well as preliminary test results from the testbeds.

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Phasing the Segmented Giant Magellan Telescope: Progress in Testbeds and Prototypes

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

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