Cryogenic Optical Thermal-Vacuum Testing of the James Webb Space Telescope (JWST)

Sabelhaus, Phillip A.; Geithner, Paul; Diaz, Charles

doi:10.1109/aero.2007.352981

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Pupil Verification Trades1

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“…During the observatory-level testing, currently planned to occur in the large (27 m high and 17 m diameter internal volume) thermal vacuum chamber, Chamber A, at the Johnson Space Center (JSC) 10 , pupil characteristics will only be checked at three points in the telescope's field of view. So to ensure that the primary JWST pupil verification generates the data of interest, we studied and analyzed a variety of pupil test techniques for the ISIM Element test campaign.…”

Section: Pupil Verification Tradesmentioning

confidence: 99%

Pupil alignment considerations for large deployable space telescopes

2011

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For many optical systems the properties and alignment of the internal apertures and pupils are not critical or controlled with high precision during optical system design, fabrication or assembly. In wide angle imaging systems, for instance, the entrance pupil position and orientation is typically unconstrained and varies over the system's field of view in order to optimize image quality. Aperture tolerances usually do not receive the same amount of scrutiny as optical surface aberrations or throughput characteristics because performance degradation is typically graceful with misalignment,

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Section: Pupil Verification Tradesmentioning

confidence: 99%