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Proceedings Paper

Research progress of large optics in the TMT MOBIE
Author(s): Shijie Liu; Longbo Xu; You Zhou; Weili Zhang; Qi Lu; Wenlan Gao; Jianguo Wang; Zhaoyang Wei; Xueke Xu; Hongbo He; Jianda Shao
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Paper Abstract

The multi-object broadband imaging echellette (MOBIE) is the seeing-limited, visible-wavelength imaging multi-object spectrograph (MOS) planned for first-light use on the thirty meter telescope (TMT). The current MOBIE optical design provides two color channels, spanning the 310nm–550nm and 550nm-1000nm passbands. The involved large optics includes an atmospheric dispersion corrector (ADC) prism (1.4m in diameter), a collimator (1.7mx1.0m), a dichroic(680 mm x500 mm x 30 mm), a red folding mirror and two corrector lenses(570mm in diameter) for different channels. In the past two years, Shanghai Institute of Optics and Fine Mechanics (SIOM) has been included in the preliminary study of folding mirror sub-system in MOBIE, especially the study on the large optics manufacture techniques. The research progress of these large optics will be reviewed in this paper. The influence of optical quality of the large optics on the MOBIE is analyzed in order to define the specifications of the large optics. The manufacture methods are designed for different large optics. In order to testify the effectiveness of the manufacture methods, some samples have been processed and the final performance including wavefront error and spectral properties are tested. Finally, the future work including remaining problems and possible solutions are introduced.

Paper Details

Date Published: 19 October 2016
PDF: 8 pages
Proc. SPIE 10154, Advanced Optical Design and Manufacturing Technology and Astronomical Telescopes and Instrumentation, 1015429 (19 October 2016); doi: 10.1117/12.2247534
Show Author Affiliations
Shijie Liu, Shanghai Institute of Optics and Fine Mechanics (China)
Longbo Xu, Nanjing Univ. of Science and Technology (China)
You Zhou, Shanghai Institute of Optics and Fine Mechanics (China)
Weili Zhang, Shanghai Institute of Optics and Fine Mechanics (China)
Qi Lu, Shanghai Institute of Optics and Fine Mechanics (China)
Wenlan Gao, Shanghai Institute of Optics and Fine Mechanics (China)
Jianguo Wang, Shanghai Institute of Optics and Fine Mechanics (China)
Zhaoyang Wei, Shanghai Institute of Optics and Fine Mechanics (China)
Xueke Xu, Shanghai Institute of Optics and Fine Mechanics (China)
Hongbo He, Shanghai Institute of Optics and Fine Mechanics (China)
Jianda Shao, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 10154:
Advanced Optical Design and Manufacturing Technology and Astronomical Telescopes and Instrumentation
Min Xu; Ji Yang, Editor(s)

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