Progress report on the high resolution spectrograph for the Space Telescope

Details Progress report on the high resolution spectrograph for the Space Telescope Progress report on the high resolution spectrograph for the Space Telescope

Jan 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981spie..279..183b&link_type=abstract

In: Ultraviolet and vacuum ultraviolet systems; Proceedings of the Meeting, Washington, DC, April 21, 22, 1981. (A83-13954 03-35

Computer Science

1

High Resolution, Hubble Space Telescope, Image Resolution, Technology Assessment, Ultraviolet Spectroscopy, Airborne/Spaceborne Computers, Computer Programs, Echelle Gratings, Electronic Control, Graphite-Epoxy Composites, Gratings (Spectra), Instrument Errors, Thermal Expansion, Weight Reduction

Scientific paper

The instrument design is complete and many components and subsystems have been manufactured and tested. Solar-blind, multichannel, pulse counting detectors for two ultraviolet spectral bands have been developed and satisfactory flight units have been chosen. A large, lightweight graphite-epoxy optical bench, utilizing fingerplate joints with no metallic parts in order to minimize thermal expansion, has been built. Tests of the engineering model torque-motor-driven grating carrousel indicate that this critical system exceeds tight specifications for accurate and repeatable angular positioning. A complement of large, high-frequency gratings and an echelle is being completed in several laboratories. Software resident in a computer on the spacecraft will control the spectrograph with the capability to alter procedures in response to real-time evaluation of the data.

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