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Proceedings Paper

Tip-tilt performance test of FSMP for development of the GMT FSM
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Paper Abstract

The Giant Magellan Telescope (GMT) will be equipped with two Gregorian secondary mirrors: a fast-steering mirror (FSM) system for seeing-limited operations and an adaptive secondary mirror (ASM) for adaptive optics observing modes. The FSM has an effective diameter of 3.2 m and is comprised of seven 1.1 m diameter circular segments, which are conjugated 1:1 to the seven 8.4m segments of the primary. Each FSM segment has a tip-tilt capability for fast guiding to attenuate telescope wind shake and jitter. To verify the tip-tilt performance at various orientations, we performed tiptilt tests using a conceptual prototype of the FSM (FSMP) which was developed at KASI for R&D of key technologies for FSM. In this paper, we present configuration, methodology, results, and lessons from the FSMP test which will be considered in the development of FSM.

Paper Details

Date Published: 6 July 2018
PDF: 10 pages
Proc. SPIE 10700, Ground-based and Airborne Telescopes VII, 107003P (6 July 2018); doi: 10.1117/12.2311774
Show Author Affiliations
Sanghyuk Kim, Korea Astronomy and Space Science Institute (Korea, Republic of)
Chang-Hee Kim, Korea Astronomy and Space Science Institute (Korea, Republic of)
Ueejeong Jeong, Korea Astronomy and Space Science Institute (Korea, Republic of)
Sungho Lee, Korea Astronomy and Space Science Institute (Korea, Republic of)
Won Gi Lee, Institute for Advanced Engineering (Korea, Republic of)
Chan-Hee Lee, Institute for Advanced Engineering (Korea, Republic of)
Il-Kwon Moon, Korea Research Institute of Standards and Science (Korea, Republic of)
Jeong-Yeol Han, Korea Astronomy and Space Science Institute (Korea, Republic of)
Yunjong Kim, Korea Astronomy and Space Science Institute (Korea, Republic of)
Bongkon Moon, Korea Astronomy and Space Science Institute (Korea, Republic of)
Myung Kyu Cho, National Optical Astronomy Observatory (United States)
Byeong-Gon Park, Korea Astronomy and Space Science Institute (Korea, Republic of)
Chan Park, Korea Astronomy and Space Science Institute (Korea, Republic of)
Ho-Sang Kim, Institute for Advanced Engineering (Korea, Republic of)
Paul B. Gardner, GMTO Corp. (United States)
Robert J. Bernier, GMTO Corp. (United States)
Frank Groark, GMTO Corp. (United States)
Hugo Chiquito, GMTO Corp. (United States)


Published in SPIE Proceedings Vol. 10700:
Ground-based and Airborne Telescopes VII
Heather K. Marshall; Jason Spyromilio, Editor(s)

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