High-precision cryogenic wheel mechanisms for the JWST NIRSPEC instrument

被引：4
|
作者：
Weidlich, Kai [1 ]
Fischer, Manfred [1 ]
Ellenrieder, Marc M. [1 ]
Gross, Torsten [1 ]
Salvignol, Jean-Christophe [2 ]
Barho, Reiner [3 ]
Neugebauer, Christian [4 ]
Koenigsreiter, Guenter [4 ]
Trunz, Michael [5 ]
Mueller, Friedrich [6 ]
Krause, Oliver [6 ]
机构：
[1] Carl Zeiss Optron GmbH, Carl Zeiss Str 22, D-73447 Oberkochen, Germany
[2] European Space Agcy, NL-2201 Noordwijk, Netherlands
[3] EADS Astrium GmbH, D-88093 Friedrichshafen, Germany
[4] Austrian Aerospace GmbH, A-1120 Vienna, Austria
[5] Ing Buro Strukturmechanik Trunz, D-73408 Aalen, Germany
[6] Max Planck Inst Astron, D-69117 Heidelberg, Germany
来源：
ADVANCED OPTICAL AND MECHANICAL TECHNOLOGIES IN TELESCOPES AND INSTRUMENTATION, PTS 1-3 | 2008年 / 7018卷
关键词：
Cryomechanism; Wheel mechanism; Ratchet; Optical Mount; Bearing; Spectrograph; NIRSpec;
D O I：
10.1117/12.789663
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
The Grating and Filter Wheel Mechanisms of the JWST NIRSpec instrument allow for reconfiguration of the spectrograph in space in a number of NIR sub-bands and spectral resolutions. Challenging requirements need to be met simultaneously including high launch loads, the large temperature shift to cryo-space, high position repeatability and minimum deformation of the mounted optics. The design concept of the NIRSpec wheel mechanisms is based oil the ISOPHOT Filter Wheels but With significant enhancements to Support much larger optics. A well-balanced set of design parameters was to be found and a considerable effort was spent to adjust the hardware within narrow tolerances.
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页数：12
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