Publication Date:
2019-07-13
Description:
The JWST primary mirror consists of 18 1.5 m hexagonal segments, each with 6-DoF and RoC adjustment. The telescope will be tested at its cryogenic operating temperature at Johnson Space Center. The testing will include center-of-curvature measurements of the PM, using the Center-of-Curvature Optical Assembly (COCOA) and the Absolute Distance Meter Assembly (ADMA). The performance of these metrology systems, including hardware, software, procedures, was assessed during two cryogenic tests at JSC, using the JWST Pathfinder telescope. This paper describes the test setup, the testing performed, and the resulting metrology system performance.
Keywords:
Optics; Instrumentation and Photography
Type:
GSFC-E-DAA-TN33074
,
SPIE Astronomical Telescopes & Instrumentation 2016; Jun 26, 2016 - Jul 01, 2016; Edinburgh, Scotland; United Kingdom
Format:
application/pdf
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