Computer Science
Scientific paper
Jan 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979spie..193...12a&link_type=abstract
In: Optical systems engineering; Proceedings of the Seminar, San Diego, Calif., August 27, 28, 1979. (A80-39451 16-35) Bellingha
Computer Science
Interferometers, Molecular Spectroscopy, Optical Measuring Instruments, Satellite-Borne Instruments, Spectrometers, Fourier Transformation, Mirrors, Spacelab Payloads, Stratosphere, Trace Elements
Scientific paper
The optical system design of the ATMOS Fourier transform spectrometer to be operated from Spacelab for the measurement of stratospheric trace molecules is described. The design contains features which can achieve the required fringe contrast of 80% and spectral resolution of 0.02/cm over a spectral range of 2-16 microns. In particular, the design is based on the following features which alleviate the usual requirements for alignment precision: (1) 'cat's eye' mirror configuration in the two arms of the interferometer for retroreflection stability, (2) tilt-compensated system of beamsplitter, compensator, and fold mirrors for wavefront directional stability, (3) paraboloidal 'cat's eye' primary mirror for wavefront stability against shear, (4) rotatable compensator for matching chromatic dispersion, and (5) wedged refractive components to avoid channel spectra due to the Fabry-Perot effect.
Abel I. R.
Breckinridge James B.
Pritchard Jonathan
Reynolds B. R.
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