Progress report on the high resolution spectrograph for the Space Telescope
Abstract
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.
- Publication:
-
Ultraviolet and vacuum ultraviolet systems
- Pub Date:
- January 1981
- DOI:
- 10.1117/12.965722
- Bibcode:
- 1981SPIE..279..183B
- Keywords:
-
- 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;
- Spacecraft Instrumentation