Design of the fast steering secondary mirror assembly for the Giant Magellan Telescope
Author
Cho, Myung K.Dribusch, Christoph
Moon, Il-Kwon
Jun, Youra
Ryu, Jieun
Poczulp, Gary
Liang, Ming
Lee, Sungho
Han, Jeong-Yeol
Kim, Sanghyuk
Jeong, Ueejeong
Kim, Chang-Hee
Park, Chan
Park, Byeong-Gon
Lee, Wongi
Kim, Ho-Sang
Gardner, Paul
Chiquito, Hugo
Moon, Bongkon
Kim, Yunjong
Lee, Chan-Hee
Bernier, Robert
Groark, Frank
Affiliation
Univ ArizonaIssue Date
2018Keywords
extremely large telescopeGiant Magellan Telescope
Fast Steering Secondary Mirror
optics
opto-mechanics
mirror support
tip-tilt
optical performances
Metadata
Show full item recordPublisher
SPIE-INT SOC OPTICAL ENGINEERINGCitation
Myung Cho, Youra Jun, Christoph Dribusch, Jieun Ryu, Gary Poczulp, Ming Liang, Sungho Lee, Jeong-Yeol Han, Ueejeong Jeong, Sanghyuk Kim, Bongkon Moon, Chang-Hee Kim, Yunjong Kim, Chan Park, Byeong-Gon Park, Il-Kwon Moon, Chan-Hee Lee, Wongi Lee, Ho-Sang Kim, Paul Gardner, Robert Bernier, Frank Groark, and Hugo Chiquito "Design of the fast steering secondary mirror assembly for the Giant Magellan Telescope", Proc. SPIE 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III, 1070607 (10 July 2018); doi: 10.1117/12.2313375; https://doi.org/10.1117/12.2313375Rights
© 2018 SPIE.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
The Fast-Steering secondary mirror (FSM) of Giant Magellan Telescope (GMT) consists of seven 1.1m diameter segments with effective diameter of 3.2m. Each of the seven segments is held by three axial supports and a central lateral support with a vacuum system to mirror gravity compensations. The mirror assembly has a tip-tilt feature capable of guiding to attenuate telescope wind shake and mount control jitter. Both on-axis and off-axis mirror segments were optimized under various design considerations using finite element analyses and optical performance analyses. An integrated model of the mirror cell assembly was developed including sub-assembly parts consisting of axial supports, lateral support, breakaway mechanism, seismic restraints, and pressure seal. In this paper for the optimized FSM mirror and mirror cell assembly, the design considerations are addressed, and performance prediction results are discussed in detail with respect to the specifications.ISSN
97815106196549781510619661
Version
Final published versionSponsors
KASI; GMT Project OfficeAdditional Links
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10706/2313375/Design-of-the-fast-steering-secondary-mirror-assembly-for-the/10.1117/12.2313375.fullhttps://www.spiedigitallibrary.org/conference-presentations/10706/1070607/Design-of-the-fast-steering-secondary-mirror-assembly-for-the/10.1117/12.2313375.5807154375001
ae974a485f413a2113503eed53cd6c53
10.1117/12.2313375