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Proceedings Paper

Fabrication and testing of 4.2m off-axis aspheric primary mirror of Daniel K. Inouye Solar Telescope
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Paper Abstract

Daniel K. Inouye Solar Telescope (formerly known as Advanced Technology Solar Telescope) will be the largest optical solar telescope ever built to provide greatly improved image, spatial and spectral resolution and to collect sufficient light flux of Sun. To meet the requirements of the telescope the design adopted a 4m aperture off-axis parabolic primary mirror with challenging specifications of the surface quality including the surface figure, irregularity and BRDF. The mirror has been completed at the College of Optical Sciences in the University of Arizona and it meets every aspect of requirement with margin. In fact this mirror may be the smoothest large mirror ever made.

This paper presents the detail fabrication process and metrology applied to the mirror from the grinding to finish, that include extremely stable hydraulic support, IR and Visible deflectometry, Interferometry and Computer Controlled fabrication process developed at the University of Arizona.

Paper Details

Date Published: 22 July 2016
PDF: 12 pages
Proc. SPIE 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, 99120O (22 July 2016); doi: 10.1117/12.2229324
Show Author Affiliations
Chang Jin Oh, College of Optical Sciences, The Univ. of Arizona (United States)
Andrew E. Lowman, College of Optical Sciences, The Univ. of Arizona (United States)
Greg A. Smith, College of Optical Sciences, The Univ. of Arizona (United States)
Peng Su, College of Optical Sciences, The Univ. of Arizona (United States)
Run Huang, College of Optical Sciences, The Univ. of Arizona (United States)
Tianquan Su, College of Optical Sciences, The Univ. of Arizona (United States)
Daewook Kim, College of Optical Sciences, The Univ. of Arizona (United States)
Chunyu Zhao, College of Optical Sciences, The Univ. of Arizona (United States)
Ping Zhou, College of Optical Sciences, The Univ. of Arizona (United States)
James H. Burge, College of Optical Sciences, The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 9912:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II
Ramón Navarro; James H. Burge, Editor(s)

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