Ultra lightweight mirror performance at 8 degrees kelvinEarlier work funded by DARPA, evaluating the optical stability of a 0.5-m ultra-lightweight, frit-bonded, fused silica mirror, is extended from the previous 100 deg K specification down to 8 deg K. The thermal stability is excellent and comparable to that for conventional fusion and solid mirrors. The total mirror change of 0.10 lambda rms (lambda = 0.6328 microns) meets the needs of most IR systems. Thermal elastic quilting is excellent (0.008 lambda). Ames Research Center and Kodak data evaluations, done independently, are in very good agreement.
Document ID
19860030625
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Crowe, D. A. (Eastman Kodak Co. Rochester, NY, United States)
Melugin, R. K. (Eastman Kodak Co. Rochester, NY, United States)
Miller, J. H. (NASA Ames Research Center Moffett Field, CA, United States)