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Fabrication and Testing of Active and Adaptive Cyanate Ester Composite MirrorsThe objective of the NASA/Bennett Optical Research Inc. (BOR) NAS8-02008 Phase II Program, which also incorporated ideas developed under the earlier NASA NAS8-01035 Phase 1 Program, was to develop a large mirror fabrication and test facility with emphasis on producing large, light weight active and adaptive optics. A principle objective was to develop mandrels on which to make large composite graphite-filled cyanate ester mirrors, Deliverables were two of these superpolished lightweight active/adaptive optic composite mirrors, one 12" (approx.1/3 meter) in diameter and one 22" (approx.1/2 meter) in diameter. In addition optical superpolishers for mandrels up to 1.2 meters in diameter, test instruments for determining optical figure and scattered light, novel design actuators for making the composite mirrors both active and adaptive, and passive and active means for measuring actuator performance were developed at BOR. We are now installing a superpolisher capable of producing 3 meter diameter mirror/mandrels. All polishers utilize the principle of centrifugal elutriation and produce superpolished mandrels with surface microroughnesses under 1 nm rms.
Document ID
20040121119
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Bennett, H. E.
(Bennett Optical Research, Inc. Ridgecrest, CA, United States)
Date Acquired
August 22, 2013
Publication Date
January 1, 2004
Subject Category
Optics
Meeting Information
Meeting: Miror Technology Days (SD70 Website)
Location: Huntsville, AL
Country: United States
Start Date: August 17, 2004
End Date: August 19, 2004
Funding Number(s)
CONTRACT_GRANT: NAS8-02008
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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