The Bulletin of The Korean Astronomical Society (천문학회보)
- Volume 41 Issue 2
- /
- Pages.66.3-67
- /
- 2016
- /
- 1226-2692(pISSN)
Development Plan for the GMT Fast-steering Secondary Mirror
- Lee, Sugnho (Korea Astronomy and Space Science Institute) ;
-
Han, Jeong-Yeol
(Korea Astronomy and Space Science Institute)
;
- Park, Chan (Korea Astronomy and Space Science Institute) ;
- Jeong, Ueejeong (Korea Astronomy and Space Science Institute) ;
-
Yoon, Yang-noh
(Korea Astronomy and Space Science Institute)
;
- Song, Je Heon (Korea Astronomy and Space Science Institute) ;
-
Moon, Bongkon
(Korea Astronomy and Space Science Institute)
;
-
Park, Byeong-Gon
(Korea Astronomy and Space Science Institute)
;
- Cho, Myung K. (National Optical Astronomy Observatory) ;
- Dribusch, Christoph (National Optical Astronomy Observatory) ;
- Park, Won Hyun (National Optical Astronomy Observatory) ;
- Jun, Youra (National Optical Astronomy Observatory) ;
-
Yang, Ho-Soon
(Korea Research Institute of Standards and Science)
;
-
Moon, Il-Kwon
(Korea Research Institute of Standards and Science)
;
- Oh, Chang Jin (University of Arizona) ;
-
Kim, Ho-Sang
(Institute for Advanced Engineering)
;
-
Lee, Kyoung-Don
(Institute for Advanced Engineering)
;
- Bernier, Robert (GMTO Corporation) ;
- Gardner, Paul (GMTO Corporation) ;
- Alongi, Chris (GMTO Corporation) ;
- Rakich, Andrew (GMTO Corporation) ;
- Dettmann, Lee (GMTO Corporation) ;
- Rosenthal, Wylie (GMTO Corporation)
- Published : 2016.10.12
Abstract
The Giant Magellan Telescope (GMT) will feature two interchangeable 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 subapertures 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, KASI conducted a Phase 0 study to develop a program plan detailing the design and manufacturing process for the seven FSM segments. The GMTO-KASI team matured this plan via an internal review in May 2016 and the revised plan was further assessed by an external review in June 2016. In this poster, we present the technical aspects of the FSM development plan.
Keywords