Mr. Glen Cole Profile

Glen Cole

at Thirty Meter Telescope

SPIE Involvement:

Author

Publications (7)

Proceedings Article | 21 December 2020 Presentation + Paper

Experimental data improves prediction of Thirty Meter Telescope segment warping harness correction

Carey Weisberg, Mark Colavita, Glen Cole, Carl Nissly, John Rogers, Matthias Schoeck, Byoung-Joon Seo, Mitchell Troy

Proceedings Volume 11450, 114500W (2020) https://doi.org/10.1117/12.2563129

KEYWORDS: Thirty Meter Telescope, Image segmentation, Prototyping, Mirrors, Keck Observatory, Computer simulations

Read Abstract +

Proceedings Article | 13 December 2020 Presentation + Paper

2216 epoxy bonds for TMT: performance, and precautions

Glen Cole, Benjamin Gallagher, Eric Hansen

Proceedings Volume 11445, 114451P (2020) https://doi.org/10.1117/12.2559896

KEYWORDS: Epoxies, Thirty Meter Telescope, Nondestructive evaluation, Interfaces, Interferometry, Oxides, Glasses

Read Abstract +

Proceedings Article | 24 October 2016 Paper

Fabrication and metrology study for M3MP of TMT

Xiao Luo, Erhui Qi, Haixiang Hu, Haifei Hu, Virginia Ford, Glen Cole

Proceedings Volume 9682, 968209 (2016) https://doi.org/10.1117/12.2245801

KEYWORDS: Thirty Meter Telescope, Metrology, Mirrors, Fizeau interferometers, Polishing, Optical fabrication, Autocollimators, 3D modeling, Prototyping, Monochromatic aberrations

Read Abstract +

Proceedings Article | 24 October 2016 Paper

Hydraulic supports for polishing TMT M3MP

Haifei Hu, Erhui Qi, Glen Cole, Haixiang Hu, Xiao Luo, Virginia Ford, Xuejun Zhang

Proceedings Volume 9682, 968208 (2016) https://doi.org/10.1117/12.2245642

KEYWORDS: Polishing, Mirrors, System integration, Prototyping, Photovoltaics, Telescopes, Mechanics, Optimization (mathematics), Field emission displays, Surface finishing

Read Abstract +

Proceedings Article | 24 October 2016 Paper

Research on sub-surface damage and its stress deformation in the process of large aperture and high diameter-to-thickness ratio TMT M3MP

Hai-xiang Hu, Erhui Qi, Glen Cole, Hai-fei Hu, Xiao Luo, Xue-jun Zhang

Proceedings Volume 9682, 96820A (2016) https://doi.org/10.1117/12.2245575

KEYWORDS: Thirty Meter Telescope, Mirrors, Polishing, Surface finishing, Optics manufacturing, Telescopes, Manufacturing, Abrasives, Surface roughness, Photovoltaics

Read Abstract +

Proceedings Article | 24 October 2016 Paper

The application of pentaprism scanning technology on the manufacturing of M3MP

Erhui Qi, Haixiang Hu, Haifei Hu, Glen Cole, Xiao Luo, Virginia Ford, Xuejun Zhang

Proceedings Volume 9682, 96821A (2016) https://doi.org/10.1117/12.2245813

KEYWORDS: Thirty Meter Telescope, Mirrors, Manufacturing, Monochromatic aberrations, Optics manufacturing, Autocollimators, Prisms, Telescopes, Polishing, Prototyping

Read Abstract +

Proceedings Article | 27 July 2016 Paper

Pre-construction progress of giant steerable science mirror for TMT

Fei Yang, Hongchao Zhao, Qichang An, Peng Guo, Haibo Jiang, Linchu Han, Virginia Ford, Glen Cole, Byron Smith, Marvin Campbell

Proceedings Volume 9906, 99064M (2016) https://doi.org/10.1117/12.2232068

KEYWORDS: Thirty Meter Telescope, Mirrors, Prototyping, Telescopes, Polishing, Optical fabrication, Interfaces, Calibration, Motion measurement, Surface finishing

Read Abstract +

The Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP) team is developing the Giant Steerable Science Mirror (GSSM) for Thirty Meter Telescope (TMT) which will enter the preliminary design phase in 2016. The GSSM is the tertiary mirror of TMT and consists of the world’s largest flat telescope mirror (approximately 3.4m X 2.4 m X 100mm thick) having an elliptical perimeter positioned with an extremely smooth tracking and pointing mechanism in a gravity-varying environment. In order to prepare for developing this unique mirror system, CIOMP has been developing a 1/4 scale, functionally accurate version of the GSSM prototype during the pre-construction phase of GSSM. The prototype will incorporate the same optomechanical system and servo control system as the GSSM. The size of the prototype mirror is 898.5mm×634mm×12.5mm with an elliptical perimeter. The mirror will be supported axially by an 18 point whiffletree and laterally with a 12 point whiffletree. The main objective of the preconstruction phase includes requirement validation and risk reduction for GSSM and to increase confidence that the challenge of developing the GSSM can be met. The precision mechanism system and the optical mirror polishing and testing have made good progress. CIOMP has completed polishing the mirror, the prototype mechanism is nearly assembled, some testing has been performed, and additional testing is being planned and prepared. A dummy mirror is being integrated into the cell assembly prototype to verify the design, analysis and interface and will be used when testing the prototype positioner tilt and rotation motions. The prototype positioner tilt and rotator structures have been assembled and tested to measure each subsystem’s jitter and dynamic motion. The mirror prototype has been polished and tested to verify the polishing specification requirement and the mirror manufacturing process. The complete assembly, integration and verification of the prototype will be soon finished. Final testing will verify the prototype requirements including mounted mirror surface figure accuracy in 5 different orientations; rotation and tilt motion calibration and pointing precision; motion jitter; and internally generated vibrations. CIOMP has scheduled to complete the prototype by the end of July 2016. CIOMP will get the sufficient test results during the pre-construction phase to prepare to enter the preliminary design for GSSM.

Showing 5 of 7 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years