Shutter for the short wavelength spectro
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K.J. Wildeman; G.R. Ploeger; D.A. Beintema
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Article
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1989
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Elsevier Science
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English
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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