Jitter studies for the secondary and tertiary mirror systems on the Thirty Meter Telescope
Contributors
Abstract
The Secondary Mirror System (M2S) and Tertiary Mirror System (M3S) of the Thirty Meter Telescope (TMT) consist of passively mounted mirrors supported in kinematic cell assemblies that are moved during telescope tracking to counteract effects of changing zenith angle and thermal gradients within the telescope structure. TMT is concerned that the requirements for pointing jitter during Adaptive Optics tracking for the M2 and M3 Systems are very challenging with a risk of requiring complex stabilization systems for compliance. Both systems were researched to determine whether similar un-stabilized hardware exists that can meet the TMT jitter requirements. Tests using representative TMT tracking motions were then performed to measure jitter on similar existing hardware. The results of these hardware tests have been analyzed. Test results, remaining risk assessment and further testing plans are presented.
Additional Information
© 2014 SPIE. I would like to acknowledge the expertise, guidance and support provided by management staff of ADS International, S.r.l, and Advanced Mechanical & Optical Systems S.A. The TMT Project gratefully acknowledges support of TMT collaborating institutions. They are: Association of Canadian Universities for Research in Astronomy (ACURA), the California Institute of Technology, the University of California, the National Astronomical Observatory of Japan, the National Astronomical Observatories of China and consortium partners, and the Department of Science and Technology of India and supported institutes. This work was supported as well by the Gordon and Betty Moore Foundation, the Canada Foundation for Innovation, the Ontario Ministry of Research and Innovation, the National Research Council of Canada, the Natural Sciences and Engineering Research Council of Canada, the British Columbia Knowledge Development Fund, the Association of Universities for Research in Astronomy (AURA), the U.S. National Science Foundation, and the National Institutes of Natural Sciences of Japan.Attached Files
Published - Ford_2014p91512H.pdf
Files
Ford_2014p91512H.pdf
Additional details
Identifiers
- Eprint ID
- 58216
- Resolver ID
- CaltechAUTHORS:20150612-135150018
Funding
- Association of Canadian Universities for Research in Astronomy (ACURA)
- Caltech
- University of California
- National Astronomical Observatory of Japan
- National Astronomical Observatories of China
- Department of Science and Technology of India
- Gordon and Betty Moore Foundation
- Canada Foundation for Innovation (CFI)
- Ontario Ministry of Research and Innovation
- National Research Council of Canada
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- British Columbia Knowledge Development Fund
- Association of Universities for Research in Astronomy (AURA)
- NSF
- National Institutes of Natural Sciences of Japan
Dates
- Created
-
2015-06-13Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
Caltech Custom Metadata
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 9151