Development of the fast steering secondary mirror assembly of GMT

Sungho Lee; Myung K. Cho; Chan Park; Jeong Yeol Han; Ueejeong Jeong; Yang Noh Yoon; Je Heon Song; Byeong Gon Park; Christoph Dribusch; Won Hyun Park; Youra Jun; Ho Soon Yang; Il Kwon Moon; Chang Jin Oh; Ho Sang Kim; Kyoung Don Lee; Robert Bernier; Chris Alongi; Andrew Rakich; Paul Gardner; Lee Dettmann; Wylie Rosenthal

doi:10.1117/12.2233710

Development of the fast steering secondary mirror assembly of GMT

Sungho Lee, Myung K. Cho, Chan Park, Jeong Yeol Han, Ueejeong Jeong, Yang Noh Yoon, Je Heon Song, Byeong Gon Park, Christoph Dribusch, Won Hyun Park, Youra Jun, Ho Soon Yang, Il Kwon Moon, Chang Jin Oh, Ho Sang Kim, Kyoung Don Lee, Robert Bernier, Chris Alongi, Andrew Rakich, Paul GardnerLee Dettmann, Wylie Rosenthal

Optical Sciences

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

8 Scopus citations

Abstract

The Giant Magellan Telescope (GMT) will be featured with two Gregorian secondary mirrors, an adaptive secondary mirror (ASM) and a fast-steering secondary mirror (FSM). The FSM has an effective diameter of 3.2 m and built as seven 1.1 m diameter circular segments, which are conjugated 1:1 to the seven 8.4m segments of the primary. Each FSM segment contains a tip-tilt capability for fine co-alignment of the telescope sub-apertures and fast guiding to attenuate telescope wind shake and mount control jitter. This tip-tilt capability thus enhances performance of the telescope in the seeing limited observation mode. As the first stage of the FSM development, Phase 0 study was conducted to develop a program plan detailing the design and manufacturing process for the seven FSM segments. The FSM development plan has been matured through an internal review by the GMTO-KASI team in May 2016 and fully assessed by an external review in June 2016. In this paper, we present the technical aspects of the FSM development plan.

Original language	English (US)
Title of host publication	Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II
Editors	Ramon Navarro, James H. Burge
Publisher	SPIE
ISBN (Electronic)	9781510602038
DOIs	https://doi.org/10.1117/12.2233710
State	Published - 2016
Event	Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II - Edinburgh, United Kingdom Duration: Jun 26 2016 → Jul 1 2016

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9912
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Other

Other	Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II
Country/Territory	United Kingdom
City	Edinburgh
Period	6/26/16 → 7/1/16

Keywords

Extremely large telescope
Fast Steering Secondary Mirror
Giant Magellan Telescope
Mirror support, tip-tilt, image quality
Optics
Optomechanics

ASJC Scopus subject areas

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

Access to Document

10.1117/12.2233710

Cite this

Lee, S., Cho, M. K., Park, C., Han, J. Y., Jeong, U., Yoon, Y. N., Song, J. H., Park, B. G., Dribusch, C., Park, W. H., Jun, Y., Yang, H. S., Moon, I. K., Oh, C. J., Kim, H. S., Lee, K. D., Bernier, R., Alongi, C., Rakich, A., ... Rosenthal, W. (2016). Development of the fast steering secondary mirror assembly of GMT. In R. Navarro, & J. H. Burge (Eds.), Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II Article 991241 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9912). SPIE. https://doi.org/10.1117/12.2233710

Development of the fast steering secondary mirror assembly of GMT. / Lee, Sungho; Cho, Myung K.; Park, Chan et al.
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II. ed. / Ramon Navarro; James H. Burge. SPIE, 2016. 991241 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9912).

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

Lee, S, Cho, MK, Park, C, Han, JY, Jeong, U, Yoon, YN, Song, JH, Park, BG, Dribusch, C, Park, WH, Jun, Y, Yang, HS, Moon, IK, Oh, CJ, Kim, HS, Lee, KD, Bernier, R, Alongi, C, Rakich, A, Gardner, P, Dettmann, L & Rosenthal, W 2016, Development of the fast steering secondary mirror assembly of GMT. in R Navarro & JH Burge (eds), Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II., 991241, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9912, SPIE, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, Edinburgh, United Kingdom, 6/26/16. https://doi.org/10.1117/12.2233710

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title = "Development of the fast steering secondary mirror assembly of GMT",

abstract = "The Giant Magellan Telescope (GMT) will be featured with two Gregorian secondary mirrors, an adaptive secondary mirror (ASM) and a fast-steering secondary mirror (FSM). The FSM has an effective diameter of 3.2 m and built as seven 1.1 m diameter circular segments, which are conjugated 1:1 to the seven 8.4m segments of the primary. Each FSM segment contains a tip-tilt capability for fine co-alignment of the telescope sub-apertures and fast guiding to attenuate telescope wind shake and mount control jitter. This tip-tilt capability thus enhances performance of the telescope in the seeing limited observation mode. As the first stage of the FSM development, Phase 0 study was conducted to develop a program plan detailing the design and manufacturing process for the seven FSM segments. The FSM development plan has been matured through an internal review by the GMTO-KASI team in May 2016 and fully assessed by an external review in June 2016. In this paper, we present the technical aspects of the FSM development plan.",

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AU - Yoon, Yang Noh

AU - Song, Je Heon

AU - Park, Byeong Gon

AU - Dribusch, Christoph

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AU - Jun, Youra

AU - Yang, Ho Soon

AU - Moon, Il Kwon

AU - Oh, Chang Jin

AU - Kim, Ho Sang

AU - Lee, Kyoung Don

AU - Bernier, Robert

AU - Alongi, Chris

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AU - Dettmann, Lee

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AB - The Giant Magellan Telescope (GMT) will be featured with two Gregorian secondary mirrors, an adaptive secondary mirror (ASM) and a fast-steering secondary mirror (FSM). The FSM has an effective diameter of 3.2 m and built as seven 1.1 m diameter circular segments, which are conjugated 1:1 to the seven 8.4m segments of the primary. Each FSM segment contains a tip-tilt capability for fine co-alignment of the telescope sub-apertures and fast guiding to attenuate telescope wind shake and mount control jitter. This tip-tilt capability thus enhances performance of the telescope in the seeing limited observation mode. As the first stage of the FSM development, Phase 0 study was conducted to develop a program plan detailing the design and manufacturing process for the seven FSM segments. The FSM development plan has been matured through an internal review by the GMTO-KASI team in May 2016 and fully assessed by an external review in June 2016. In this paper, we present the technical aspects of the FSM development plan.

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Development of the fast steering secondary mirror assembly of GMT

Abstract

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Keywords

ASJC Scopus subject areas

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