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cryogenic optical performance of a lightweighted mirror assembly for future space astronomical telescopes: correlating optical test results and thermal optical modelA 43cm diameter stacked core mirror demonstrator was interferometrically tested at room temperature down to 250 degrees Kelvin for thermal deformation. The 2.5m radius of curvature spherical mirror assembly was constructed by low temperature fusing three abrasive waterjet core sections between two CNC pocket milled 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
20140003112
Document Type
Conference Paper
Authors
Eng, Ron
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Arnold, William R.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Baker, Marcus A.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Bevan, Ryan M.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Burdick, Gregory
(ITT Exelis Geospatial Systems Rochester, NY, 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)
Hanson, Craig
(ITT Exelis Geospatial Systems Rochester, NY, United States)
Hogue, William D.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Kegley, Jeffrey R.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Kirk, Charlie
(ITT Exelis Geospatial Systems Rochester, NY, United States)
Maffett, Steven P.
(ITT Exelis Geospatial Systems Rochester, NY, United States)
Matthews, Gary W.
(ITT Exelis Geospatial Systems Rochester, NY, 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)
Date Acquired
April 16, 2014
Publication Date
August 25, 2013
Subject Category
Instrumentation and Photography
Optics
Report/Patent Number
M13-2954
Meeting Information
2013 International Society for Optics and Photonics (SPIE) Optics and Photonics Exhibition-Material Tech. and Appl. to Optics, Structures, Components, and Sub-sys. Conference(San Diego, CA)
Distribution Limits
Public
Copyright
Public Use Permitted.

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