Physics – Optics
Scientific paper
Aug 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980cemec..22..165r&link_type=abstract
(Symposium on Star Catalogues, Positional Astronomy and Celestial Mechanics, Washington, D.C., Nov. 30, 1978.) Celestial Mechani
Physics
Optics
Cassegrain Optics, Hubble Space Telescope, Optical Properties, Spaceborne Telescopes, Cameras, Design Analysis, Guidance Sensors, Photometers, Space Shuttles, Spectrographs, Tdr Satellites
Scientific paper
The design, in-orbit operation and projected performance of the Space Telescope are discussed. The telescope will be in a moderately low earth orbit and communicate with the earth through the Tracking and Data Relay Satellite and directly for a few minutes each orbit. The optical system contains a 2.4-m mirror in a standard Cassegrain configuration, with four axial instrument positions and one radial and a fine guidance sensor which will allow the maintenance of telescope pointing during an observation to seven thousandths of an arcsec. The satellite will be launched by the Space Shuttle, and is capable of being serviced in space or recaptured and brought back to earth for more extensive modifications. The telescope employs a fairly standard Ritchey-Chretian optical design with a primary field of view of 18 arcmin and good mirror reflection of wavelengths from 1100 A to 1 mm. Image quality will be very insensitive to wavelength, with image size on the order of 0.04 arcsec. Instruments to be carried on the first launch include a guidance system for astrometry, a wide-field and planetary camera, a faint object camera, a high resolution spectrograph, a faint object spectrograph and a high-speed photometer.
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