Grating drive for the short-wavelength spectrometer in ISO

The short-wavelength spectrometer is to be flown on the European Space Agency's Infrared Space Observatory, planned for 1992. This cryogenic instrument employs rotating mirrors to vary the angle of incidence on fixed gratings. These mirrors are mounted on flexural pivots and driven by means of...

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Bibliographic Details
Published in:Cryogenics (Guildford) 1987-02, Vol.27 (2), p.68-72
Main Authors: Wildeman, K.J., Beintema, D.A., Ploeger, G.R., Snel, D., Wijnbergen, J.J.
Format: Article
Language:English
Subjects:
Astronomy
Earth, ocean, space
Exact sciences and technology
Fundamental astronomy and astrophysics. Instrumentation, techniques, and astronomical observations
instrumentation
Observation and data reduction techniques. Computer modeling and simulation
space cryogenics
spectrometers
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Summary:The short-wavelength spectrometer is to be flown on the European Space Agency's Infrared Space Observatory, planned for 1992. This cryogenic instrument employs rotating mirrors to vary the angle of incidence on fixed gratings. These mirrors are mounted on flexural pivots and driven by means of a linear motor. The design and the measured performance of a prototype are discussed. The mirrors can be rotated over an angle of 12°, with a power dissipation in the cryostat of < 5 mW. First measurements, with an inductive position sensor in a feed-back loop, indicate an angular position reproducibility better than the required 32″.
ISSN:0011-2275
1879-2235
DOI:10.1016/0011-2275(87)90142-1