Physics – Optics
Scientific paper
Dec 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ssi.....3..369b&link_type=abstract
Space Science Instrumentation, vol. 3, Dec. 1977, p. 369-387. NASA-supported research.
Physics
Optics
8
Astronomical Photometry, Astronomical Spectroscopy, Optical Properties, Oso-8, Satellite-Borne Instruments, Spaceborne Astronomy, Ultraviolet Spectrometers, Apertures, Cassegrain Optics, Ebert Spectrometers, Gratings (Spectra), Position (Location), Slits, User Requirements
Scientific paper
The optical design of the high-resolution ultraviolet spectrometer prepared for the OSO-8 spacecraft is discussed. The instrument is a conventional 1 m Ebert-Fastie spectrometer fed by a Cassegrainian telescope. The instrument operates in the spectral range 1200-2000 A with spectral resolution of order 0.02 A. Spatial resolution is about 2.5 arcsec normal to the direction of the slit and is selectable from about 3 arcsec to 15 arcmin along the direction of the slit. Time resolution for the single spectrometer channel is selectable according to the needs of an individual observation and is limited to a maximum sampling rate of 40 ms per data point. The instrument is controlled by an internal general purpose computer.
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