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

被引：2

作者：

Close, Laird M. ^{[1
]}

Males, Jared R. ^{[1
]}

Durney, Olivier ^{[1
]}

Coronado, Fernando ^{[1
]}

Haffert, Sebastiaan Y. ^{[1
]}

Gasho, Victor ^{[1
]}

Hedglen, Alexander ^{[1
,2
]}

Kautz, Maggie Y. ^{[1
,2
]}

Connors, Tom E. ^{[1
]}

Sullivan, Mark ^{[1
]}

Guyon, Olivier ^{[1
,2
,3
,4
]}

Noenickx, Jamison ^{[1
]}

机构：

[1] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA

[2] Univ Arizona, Blames C Wyant Coll Optic Sci, Tucson, AZ USA

[3] Natl Astron Observ Japan, Subaru Telescope, Mitaka, Japan

[4] Natl Inst Nat Sci, Astrobiol Ctr, Tokyo, Japan

来源：

ADAPTIVE OPTICS SYSTEMS VIII | 2022年 / 12185卷

基金：

美国国家科学基金会;

关键词：

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

D O I：

10.1117/12.2629553

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页数：15

共 12 条

[1] Close L. M., 2019, arXiv:2004.06808, V6
[2] Optical and mechanical design of the extreme AO coronagraphic instrument MagAO-X
Close, Laird M.
Males, Jared R.
Durney, Olivier
Sauve, Corwynn
Kautz, Maggie
Hedglen, Alex
Schatz, Lauren
Lumbres, Jennifer
Miller, Kelsey
Van Gorkom, Kyle
Jean, Madison
Gasho, Victor
[J]. ADAPTIVE OPTICS SYSTEMS VI, 2018, 10703
[3] Hedglen AD, 2022, Arxiv, DOI [arXiv:2206.03614, 10.1117/1.JATIS.8.2.021515, DOI 10.1117/1.JATIS.8.2.021515]
[4] Demers R., 2022, Proc. SPIE, V12185, p#44
[5] Extreme Adaptive Optics
Guyon, Olivier
[J]. ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, VOL 56, 2018, 56 : 315 - 355
[6] Haffert Sebastiaan Y., 2022, Proc. SPIE, V12185, p#122
[7] Phasing the Giant Magellan Telescope with the holographic dispersed fringe sensor
Haffert, Sebastiaan Y.
Close, Laird M.
Hedglen, Alexander D.
Males, Jared R.
Kautz, Maggie
Bouchez, Antonin H.
Demers, Richard
Quiros-Pacheco, Fernando
Sitarski, Breann N.
Van Gorkom, Kyle
Long, Joseph D.
Guyon, Olivier
Schatz, Lauren
Miller, Kelsey
Lumbres, Jennifer
Rodack, Alex
Knight, Justin M.
[J]. JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS, 2022, 8 (02)
[8] Hedglen A., 2022, Proc. SPIE, V12185, p#42
[9] Kautz M. Y., 2022, PROC SPIE, V12185, P167
[10] Males J., 2019, Bulletin of the American Astronomical Society, V51, P236

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