New cryogenic optical test capability at Marshall Space Flight Center's Space Optics Manufacturing Technology Center

Jeff Kegley; Ron Eng; Robert Engberg; James B. Hadaway; William Hogue; J. Cary Reily; Kevin Russell; H. Philip Stahl; Ernest R. Wright

doi:10.1117/12.461793

5 March 2003 New cryogenic optical test capability at Marshall Space Flight Center's Space Optics Manufacturing Center

Jeff Kegley, Ron Eng, Robert Engberg, James B. Hadaway, William Hogue, J. Cary Reily, Kevin Russell, H. Philip Stahl, Ernest R. Wright

Author Affiliations +

Proceedings Volume 4850, IR Space Telescopes and Instruments; (2003) https://doi.org/10.1117/12.461793
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

Marshall Space Flight Center (MSFC) has been performing optical wavefront testing at cryogenic temperatures since 1999 in the Space Optics Manufacturing Technology Center's (SOMTC's) X-ray / Cryogenic Facility (XRCF). Recently the cryogenic optical testing capability has been extended to a smaller chamber. This smaller horizontal cylindrical vacuum chamber has been outfitted with a helium-cooled liner that can be connected to the existing helium refrigeration system bringing the kilowatt of refrigeration capacity to bear on a 1 x 2 meter test envelope. Cryogenic cycles to 20 Kelvin, including set-up and chamber evacuation/backfill, are now possible in only a few days. Since activation and chamber characterization tests in September 2001, the new chamber has been used to perform a number of proprietary cryogenic tests on mirrors, adhesives, and actuators. A vibration survey has also been performed on the test chamber. Chamber specifications and performance data, vibration environment data, and optical test capability will be discussed.

Citation Download Citation

Jeff Kegley, Ron Eng, Robert Engberg, James B. Hadaway, William Hogue, J. Cary Reily, Kevin Russell, H. Philip Stahl, and Ernest R. Wright "New cryogenic optical test capability at Marshall Space Flight Center's Space Optics Manufacturing Center", Proc. SPIE 4850, IR Space Telescopes and Instruments, (5 March 2003); https://doi.org/10.1117/12.461793

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