Shutter for the short wavelength spectrometer in ISO

The Short Wavelength Spectrometer is one of the four astronomical instruments in the Infrared Space Observatory. At the input of this cryogenic spectrometer, two shutters select one of the three entrance slits. A fourth setting closes the entrance for dark-current measurements. The design of the shu...

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Bibliographic Details
Published in:Cryogenics (Guildford) 1989-05, Vol.29 (5), p.546-549
Main Authors: Wildeman, K.J., Ploeger, G.R., Beintema, D.A.
Format: Article
Language:English
Subjects:
Astronomical and space-research instrumentation
Astronomy
Earth, ocean, space
Exact sciences and technology
Fundamental astronomy and astrophysics. Instrumentation, techniques, and astronomical observations
ISO
Short Wavelength Spectrometer
space cryogenics
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Summary:The Short Wavelength Spectrometer is one of the four astronomical instruments in the Infrared Space Observatory. At the input of this cryogenic spectrometer, two shutters select one of the three entrance slits. A fourth setting closes the entrance for dark-current measurements. The design of the shutters and results of performance tests on a prototype are the subject of this paper. The shutter vanes are mounted on cross-spring flexure pivots; results of cryogenic lifetime tests on these pivots are also discussed.
ISSN:0011-2275
1879-2235
DOI:10.1016/0011-2275(89)90104-5