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Cryogenic Optical Performance of a Light-weight Mirror Assembly for Future Space Astronomical Telescopes: Optical Test Results and Thermal Optical ModelA 40 cm diameter mirror assembly was interferometrically tested at room temperature down to 250 degrees Kelvin for thermal deformation. The 2.5 m radius of curvature spherical mirror assembly was constructed by low temperature fusing three abrasive waterjet core sections between two face sheets. The 93% lightweighted Corning ULE mirror assembly represents the current state of the art for future UV, optical, near IR space telescopes. During the multiple thermal test cycles, test results of interferometric test, thermal IR images of the front face were recorded in order to validate thermal optical model.
Document ID
20140002959
Acquisition Source
Marshall Space Flight Center
Document Type
Abstract
Authors
Eng, Ron (NASA Marshall Space Flight Center Huntsville, AL, United States)
Arnold, William (NASA Marshall Space Flight Center Huntsville, AL, United States)
Baker, Markus A. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Bevan, Ryan M. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Carpenter, James R. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Effinger, Michael R. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Gaddy, Darrell E. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Goode, Brian K. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Kegley, Jeffrey R. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Hogue, William D. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Siler, Richard D. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Smith, W. Scott (NASA Marshall Space Flight Center Huntsville, AL, United States)
Stahl. H. Philip (NASA Marshall Space Flight Center Huntsville, AL, United States)
Tucker, John M. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Wright, Ernest R. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Kirk, Charles S. (ITT Exelis Geospatial Systems Rochester, NY, United States)
Hanson, Craig (ITT Exelis Geospatial Systems Rochester, NY, United States)
Burdick, Gregory (ITT Exelis Geospatial Systems Rochester, NY, United States)
Maffett, Steven (ITT Exelis Geospatial Systems Rochester, NY, United States)
Date Acquired
April 15, 2014
Publication Date
August 25, 2013
Subject Category
Optics
Report/Patent Number
M13-2529
Meeting Information
Meeting: SPIE Conference on Material Technologies and Applications to Optics, Structures, Components, and Sub-Systems
Location: San Diego, CA
Country: United States
Start Date: August 25, 2013
End Date: August 29, 2013
Sponsors: International Society for Optical Engineering
Distribution Limits
Public
Copyright
Public Use Permitted.

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